SUMMARY: January TC Summary

From: Gary Padgett (garyp@ALAWEB.COM)
Date: Fri Mar 28 2008 - 21:58:39 EDT


 

                   MONTHLY GLOBAL TROPICAL CYCLONE SUMMARY

 

                                JANUARY, 2008

 

  (For general comments about the nature of these summaries, as well as

  information on how to download the tabular cyclone track files, see

  the Author's Note at the end of this summary.)

 

  *************************************************************************

 

   !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

   !!!!!!!!!! VERY IMPORTANT MESSAGE FROM AUTHOR - PLEASE READ !!!!!!!!!!

   !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

                

     I know everyone is wondering where the summaries for October,

  November, and December are. I plan to get them out, but since they

  are so late already, I decided it would be better to go ahead and write

  summaries for the more recent months and try to get them sent out in a

  timely fashion, beginning with January, 2008. The past two months

  have been very difficult for me personally and emotionally, and I have

  seriously considered dropping the summaries altogether, just continuing

  to produce the cyclone tracks file.

 

     If the summaries are to continue, they are going to have to be

  scaled back significantly from the length and amount of detail they

  have contained at times in the past. I do not have the time to scan

  through dozens of Tropical Weather Outlooks and warnings/discussions

  looking for details of such things as:

 

  (1) pre-warning history of cyclones

  (2) all the minor ups and downs in intensity

  (3) all the atmospheric weather systems affecting the steering of

      cyclones

 

  Without attempting to elaborate more here, the summaries I have written

  for the January Southwest Indian and South Pacific cyclones exemplify

  the level of detail I shall be including in future summaries.

 

     Also, the summaries will concentrate on supplementing information

  already available online. For instance, BoM already has an adequate

  and fairly detailed summary of Tropical Cyclone Helen available, so I

  have written a very brief synopsis of the storm and referred readers to

  the BoM report.

 

     Over the past six months or so, Derrick Herndon has been sending me

  increasing numbers of observations associated with tropical cyclones

  along with occasional analyses of intensity. I plan to include all the

  information Derrick sends essentially verbatim.

 

     For some cyclones (especially in the Atlantic), the Wikipedia tropical

  cyclone writers have produced very detailed reports, and I will not try

  to cover those storms in much detail. But many of the Wikipedia reports

  are currently rather sketchy (e.g., for all the January cyclones), so

  those systems I will attempt to cover more fully.

 

     Kevin Boyle will continue to help me write summaries for the Northwest

  Pacific basin, but Simon Clarke has had to "resign" due to increased

  demands made upon his time by his job. (Simon has written reports for

  most of the South Pacific and Coral Sea cyclones for the past five

  years.) Due to the fact that so much information on Atlantic and

  Northeast Pacific tropical cyclones is readily available in the form of

  NHC's and CPHC's monthly summaries, archives of all the advisory text and

  graphic products, and the usually quite detailed Wikipedia reports, I

  will in general not be covering those basins in much detail, thus giving

  me more time to help Kevin with Northwest Pacific storms. Hopefully this

  will keep us from falling so many months behind during the Northern

  Hemisphere rush.

   

  *************************************************************************

 

                              JANUARY HIGHLIGHTS

 

   --> South Pacific cyclones affect Vanuatu and Fiji

   --> Tropical cyclone strikes Madagascar

   --> Australia's Northern Territory affected by tropical cyclone

 

  *************************************************************************

 

                     WIKIPEDIA TROPICAL CYCLONE REPORTS

 

     Short reports with satellite pictures and small-scale maps for all

  tropical cyclones may be found at the following links:

 

  http://en.wikipedia.org/wiki/2008_Atlantic_hurricane_season

 

  http://en.wikipedia.org/wiki/2008_Pacific_hurricane_season

 

  http://en.wikipedia.org/wiki/2008_Pacific_typhoon_season

 

  http://en.wikipedia.org/wiki/2008_North_Indian_cyclone_season

 

 
http://en.wikipedia.org/wiki/2007-08_Southern_Hemisphere_tropical_cyclone_se
ason

 

  For some storms more detailed reports have been prepared. In those cases

  I will include the specific links in the reports for the applicable

  tropical cyclones.

 

  *************************************************************************

  

                            ACTIVITY BY BASINS

 

  ATLANTIC (ATL) - North Atlantic Ocean, Caribbean Sea, Gulf of Mexico

 

  Activity for January: No tropical cyclones

 

 

                          Sources of Information

                          ----------------------

 

     Most of the information presented below was obtained from the

  various tropical cyclone products issued by the Tropical Prediction

  Center/National Hurricane Center (TPC/NHC) in Miami, Florida:

  discussions, public advisories, forecast/advisories, tropical weather

  outlooks, special tropical disturbance statements, etc. Some

  additional information may have been gleaned from the monthly

  summaries prepared by the hurricane specialists and available on

  TPC/NHC's website. All references to sustained winds imply a

  1-minute averaging period unless otherwise noted.

 

 

                  Atlantic Tropical Activity for January

                  --------------------------------------

 

     A non-tropical LOW formed on 26 December in the mid-Atlantic near

  27N/42W. Over the next few days the system drifted eastward and

  gradually acquired some subtropical characteristics. At 1800 UTC on

  29 December the LOW was centered near 28N/38W, or roughly 1000 nm

  southwest of the Azores. A Special Tropical Disturbance Statement was

  issued by NHC on the afternoon of the 29th, indicating that subtropical

  storm development was a possibility. The LOW appeared to be quite well-

  organized, and was likely on the verge of being officially classified

  as a subtropical storm (which would have been named Pablo), but during

  the next couple of days the convection became less organized and no

  name was ever assigned. Several of the FSU Cyclone Phase Space runs

  depicted the system as shallow warm-core, and one model had it as

  moderate warm-core.

 

     Drifting buoy 62901 reported a pressure of 1004.6 mb at 31/0000 UTC

  very near the low-level center. Also, an ASCAT pass around the same

  time revealed a few 45-kt wind vectors near the swath edge in the

  northwestern semicircle, where the pressure gradient would be tightest

  due to high pressure centered to the northwest. The weakening LOW

  drifted southward during the first two days of January before

  dissipating. (Note: This was primarily a December system, but since

  the summary for that month has not yet been issued, I decided to cover

  it here.)

 

  *************************************************************************

 

  NORTHEAST PACIFIC (NEP) - North Pacific Ocean East of Longitude 180

 

  Activity for January: No tropical cyclones

 

  *************************************************************************

 

  NORTHWEST PACIFIC (NWP) - North Pacific Ocean West of Longitude 180

 

  Activity for January: 1 tropical depression **

                         1 tropical storm ++

                        

  ** - classified as a tropical depression by JMA only

 

  ++ - classified as a tropical storm by JTWC only

 

 

                          Sources of Information

                          ----------------------

 

     Most of the information presented below is based upon tropical

  cyclone warnings and significant tropical weather outlooks issued

  by the Joint Typhoon Warning Center of the U. S. Air Force and

  Navy (JTWC), located at Pearl Harbor, Hawaii. In the companion

  tropical cyclone tracks file, I normally annotate track coordinates

  from some of the various Asian warning centers when their center

  positions differ from JTWC's by usually 40-50 nm or more. All

  references to sustained winds imply a 1-minute averaging period

  unless otherwise noted.

 

     Michael V. Padua of Naga City in the Philippines, owner of the

  Typhoon 2000 website, normally sends me cyclone tracks based upon

  warnings issued by the Japanese Meteorological Agency (JMA) and the

  Philippines' Atmospheric, Geophysical & Astronomical Services

  Administration (PAGASA). A very special thanks to Michael for the

  assistance he so reliably provides.

  

      In the title line for each storm I have referenced all the cyclone

  names/numbers I have available: JTWC's depression number, the

  JMA-assigned name (if any), JMA's tropical storm numeric designator,

  and PAGASA's name for systems forming in or passing through their

  area of warning responsibility.

 

 

              Northwest Pacific Tropical Activity for January

              -----------------------------------------------

 

     The development of a January tropical storm in the Northwest Pacific

  basin is not an uncommon event, having occurred four times within the

  past ten years, the last one being Tropical Storm Kulap in January, 2005.

  In January, 2008, a tropical depression formed in the South China Sea on

  13 January and was upgraded to a minimal tropical storm for about

  18 hours on the 14th by JTWC. No other warning agency regarded this

  system as a tropical storm. A short report on Tropical Storm 01W,

  written by Kevin Boyle, follows.

 

     On 22 January another LOW was elevated to weak tropical depression

  status by JMA in the same general area. The system drifted slowly

  westward, and was reported as a 30-kt tropical depression by JMA at

  23/0000 UTC near 10.0N/113.2E, but in the next warning it was downgraded

  to a low-pressure area. The system continued to drift westward and was

  last referenced at 23/1800 UTC near 10N/110E. No track for this system

  was included in the January cyclone tracks file.

 

 

 

                               TROPICAL STORM

                                  (TC-01W)

                               13 - 18 January

                     -----------------------------------

 

     The first tropical cyclone of 2008 in the Northwest Pacific originated

  from a near-equatorial trough situated over southern Micronesia. It was

  first identified as a LOW on BoM charts on 7 January. The disturbance

  drifted on a west-northwesterly course for several days while slowly

  organizing. JTWC issued the first STWO at 0600 UTC 11 January prior to

  the system's passage across the Philippines on 12 January. The first

  warning on Tropical Depression 01W was issued at 13/0600 UTC after the

  centre emerged over the South China Sea. Initially moving towards the

  west-northwest, TD-01W turned onto a southwesterly heading in response

  to a surge in the northeast monsoon. It reached its maximum intensity of

  35 kts at 14/0000 UTC. However, the system soon began to weaken and was

  downgraded back to a tropical depression at 14/1800 UTC. TD-01W

  continued southwestwards, and as it appeared to be dissipating in a

  region of moderate shear and over cooler SSTs, JTWC released the final

  warning at 15/0600 UTC. Warnings were resumed at 15/1800 UTC based on a

  surface report of 25 kts and redevelopment of convection west of the

  LLCC. However, TD-01W soon lost all convection and organization, and

  the final warning was issued at 16/1200 UTC. JMA never classified this

  system as a tropical storm, therefore, no name was assigned. The highest

  10-min MSW estimated by this agency was 30 kts with a minimum CP of

  1004 mb. The remnant circulation of TS-01W meandered slowly west to

  west-southwestwards before dissipating close to the Malaysian coastline

  on 18 January.

 

     There were no reports of damages or casualties associated with

  Tropical Storm 01W.

 

  (Report written by Kevin Boyle)

  

  *************************************************************************

 

  NORTH INDIAN OCEAN (NIO) - Bay of Bengal and Arabian Sea

 

  Activity for January: No tropical cyclones

 

  *************************************************************************

 

  SOUTHWEST INDIAN OCEAN (SWI) - South Indian Ocean West of Longitude 90E

 

  Activity for January: 1 tropical disturbance

                         1 moderate tropical storm

                         2 tropical cyclones

 

 

                           Sources of Information

                           ----------------------

 

     The primary sources of tracking and intensity information for

  Southwest Indian Ocean tropical cyclones are the warnings issued by

  the Tropical Cyclone Warning Centre on La Reunion Island, part of

  Meteo France (MFR), and the Regional Specialised Meteorological Centre

  for the basin. However, tropical cyclones in this region are named

  by the Sub-regional Tropical Cyclone Advisory Centres in Mauritius and

  Madagascar with longitude 55E being the demarcation line between their

  respective areas of naming responsibility. The La Reunion centre only

  advises these agencies regarding the intensity of tropical systems.

  References to sustained winds imply a 10-minute averaging period unless

  otherwise stated.

 

     In the companion tropical cyclone tracks file, I occasionally

  annotate positions from warnings issued by the Joint Typhoon Warning

  Center (JTWC) of the U. S. Air Force and Navy, located at Pearl

  Harbor, Hawaii, when they differ from MFR's coordinates by usually

  40-50 nm or more. The JTWC warnings are also the source of the

  1-minute average maximum sustained wind values included in the

  tracks file. Additionally, information describing details of

  satellite imagery and atmospheric circulation features included in

  the narratives is often gleaned from the JTWC warnings.

 

 

           Southwest Indian Ocean Tropical Activity for January

           ----------------------------------------------------

 

     Three named tropical storms roamed waters of the Southwest Indian

  Ocean during January, 2008--Tropical Storm Elnus and Tropical Cyclones

  Fame and Gula. Elnus and Fame formed in the Mozambique Channel with

  Fame striking northwestern Madagascar as a tropical cyclone (hurricane).

  Tropical Cyclone Gula was a more intense storm which formed farther east

  and passed southward east of Mauritius and La Reunion. Reports on the

  three named systems follow.

 

     Another system was tracked briefly on 8 January and numbered as

  Tropical Disturbance 07 by MFR. This disturbance was followed, beginning

  on the 7th, from east of Tromelin southward to a point west of Mauritius.

  Central sustained winds were never estimated higher than 20 kts, and no

  track was included for this system in the companion tracks file. A

  track may be found on MFR's website:

 

  http://www.meteo.fr/temps/domtom/La_Reunion/

 

  By clicking on the link "Saison cyclonique en cours", links to the

  individual disturbances may be found.

 

 

 

                           TROPICAL STORM ELNUS

                             (MFR-06 / TC-09S)

                          30 December - 5 January

                -------------------------------------------

 

  Elnus: contributed by the Seychelles

 

     Tropical Storm Elnus was a minimal tropical storm which formed in

  the central Mozambique Channel at the end of December and drifted south-

  southeastward through the southern Channel without affecting any land

  areas. MFR issued the first bulletin on Tropical Disturbance 06 at

  1200 UTC on 30 December, placing the 25-kt system approximately 375 nm

  east-northeast of Beira, Mozambique. The disturbance gradually became

  better organized and was upgraded to tropical depression status (30 kts)

  at 0600 UTC 31 December. JTWC issued their first warning on TC-09S six

  hours later, estimating the 1-min avg MSW at 35 kts. MFR upgraded

  Tropical Depression 06 to moderate tropical storm status at 0000 UTC on

  1 January, 2008, with the center located about 350 nm east of Beira.

  The Sub-regional Tropical Cyclone Advisory Centre in Madagascar assigned

  the name Elnus to the storm. Based on the MFR warnings, Elnus was a

  small tropical storm with gale-force winds confined to a 20-nm radius

  from the center, extending out to 70 nm in the southeastern quadrant.

  The estimated minimum CP was 994 hPa.

 

     For the next few days the tropical storm moved rather slowly on a

  south-southeastward course down the Mozambique Channel. MFR never

  assigned an intensity higher than 35 kts. JTWC's peak 1-min avg MSW

  was 40 kts at 01/1200 UTC and again 24 hours later with a slight

  weakening indicated in between. SAB rendered a Dvorak rating of

  T3.5/3.5 at 01/2030 UTC, which suggests that Elnus could have been

  slightly stronger. The system began weakening on 2 January and was

  downgraded back to tropical depression status at 02/0600 UTC, and further

  to a 25-kt tropical disturbance at 1200 UTC 3 January. JTWC issued their

  final warning on TC-09S at 04/0000 UTC, and MFR deemed ex-Elnus to be

  extratropical at 04/0600 UTC. The LOW continued to drift toward the

  south-southeast and MFR issued the final bulletin at 1200 UTC 5 January,

  placing the center about 200 nm south of Toliara, Madagascar.

 

     The following information was sent by Derrick Herndon:

 

     "Elnus passed about 40 nm east of Ile Europa on 3 January. The

  station reported winds of 140@31 kts on the 2nd at 1800 UTC. I have no

  further obs from this site until 0000 UTC on the 3rd about the time of

  closest approach when the station reported 997 mb and winds 160@25 kts.

  So MSLP at this time was about 994 mb."

 

     No reports have been received of any damage or casualties resulting

  from Tropical Storm Elnus.

 

  (Report written by Gary Padgett)

 

 

 

                           TROPICAL CYCLONE FAME

                             (MFR-08 / TC-13S)

                          24 January - 1 February

                -------------------------------------------

 

  Fame: contributed by South Africa

 

  A. Synoptic History

  -------------------

 

     MFR initiated warnings on Tropical Disturbance 08 at 0600 UTC on

  24 January, placing a weak 25-kt center in the northern Mozambique

  Channel about 225 nm west-southwest of the northern tip of Madagascar.

  The system drifted slowly southward for about 24 hours with little in

  the way of significant development. On the 25th organization increased

  and the disturbance was classified as a 30-kt tropical depression at

  25/1200 UTC. Six hours later the depression was upgraded to tropical

  storm status with the Meteorological Service of Madagascar assigning

  the name Fame. At the same time JTWC issued their first warning on

  TC-13S with the center located about 325 nm north-northwest of

  Antananarivo, Madagascar. At the time Tropical Storm Fame was

  essentially stationary, and remained so for much of the 26th as it

  steadily strengthened, reaching 55 kts by 26/1200 UTC (65 kts 1-min avg

  per JTWC).

 

     Late on the 26th Fame commenced a steady southward march toward the

  western Madagascar coastline. MFR upped the intensity to 60 kts at

  0600 UTC 27 January, but JTWC estimated 80 kts (1-min avg) at the same

  time. (SAB rendered a Dvorak rating of T5.0/5.0 at 0830 UTC.) The

  severe tropical storm bent slightly to the south-southeast and made

  landfall around 27/1300 UTC near Besalampy. The 27/1800 UTC warning

  from MFR indicated that Fame briefly reached the tropical cyclone stage

  (65 kts 10-min avg) just before landfall in Madagascar. Shortly before

  landfall, gales extended outward from the center about 40 nm, based

  on MFR's warning. However, JTWC reported the gale radius at 75 nm.

  The minimum estimated CP was 972 hPa.

 

     Once inland, Fame quickly weakened as it accelerated to the southeast

  across the big island. By 0600 UTC 29 January the center had reached

  the Indian Ocean and was re-upgraded to tropical depression status by

  MFR at 1200 UTC while located approximately 200 nm west-northwest of

  Reunion Island. At the same time JTWC, which had dropped the system

  early on the 28th, re-initiated warnings, classifying Fame as a 35-kt

  tropical storm (1-min avg). Over the next four days Fame moved rather

  erratically in the same general area, describing a small clockwise

  loop before moving off to the southeast and weakening. MFR never

  re-upgraded the system to tropical storm status, maintaining the MSW

  at 30 kts, but JTWC peaked the system at 45 kts (1-min avg) at 0000 UTC

  on 31 January, and SAB's Dvorak rating at 30/2030 UTC reached T3.5/3.5,

  or 55 kts. JTWC issued their final warning at 1200 UTC on 1 February,

  and six hours later MFR followed suit, placing the depression's center

  about 275 nm south of Mauritius. One factor which worked to prevent

  significant re-intensification of Fame was outflow from Tropical Cyclone

  Gula located to the east.

 

  

  B. Meteorological Observations

  ------------------------------

 

     The following information was sent by Derrick Herndon:

 

     "Fame developed just south of Dzaoudzi (FMCZ), an island in the

  northern portion of the Mozambique Channel. The lowest pressure at the

  station was 1002 mb at 0200 UTC on the 26th (down from 1008 mb 20 hours

  earlier). A few hours later at 0600 UTC the station reported winds

  330@34 gusting to 45 kts. Fame exhibited a small eye in the microwave

  with the center 80 nm southwest of the island.

 

     "The tiny eye of Fame appeared to pass very close to or over Besalampy

  on Madagascar. The station reported a pressure of 982.4 mb at 1200 UTC

  on the 27th. The station did not report any wind information. CPA

  occurred about 1400 UTC and the station sent an observation at 1500 UTC;

  however, it did not give any pressure or wind information. By 1800 UTC

  the pressure had risen to 993.5 mb. Based on the observation of 982 mb

  with the center still two hours west of Besalampy and the small eye of

  about 10-15 km, the MSLP prior to landfall was almost certainly lower

  than 965 mb but perhaps not lower than 950 mb based on the IR

  presentation."

 

 

  C. Damage and Casualties

  ------------------------

 

     Press reports indicate that Tropical Cyclone Fame was responsible for

  at least 13 deaths in Madagascar.

 

  (Report written by Gary Padgett)

 

 

 

                          TROPICAL CYCLONE GULA

                            (MFR-09 / TC-14S)

                         26 January - 3 February

               -------------------------------------------

 

  Gula: contributed by Swaziland

 

     The first bulletin from MFR on a developing tropical disturbance was

  issued at 1200 UTC 26 January. The system was numbered Tropical

  Disturbance 09 and was then located about 350 nm east-southeast of

  Agalega. The disturbance subsequently moved southward as it slowly

  strengthened. JTWC's first warning on TC-14S was issued at 27/0000 UTC

  and estimated the 1-min avg MSW at 35 kts. MFR upgraded the disturbance

  to a 30-kt tropical depression at 27/0600 UTC, and six hours later the

  system was upgraded to a 35-kt tropical storm located approximately

  400 nm east-southeast of Agalega. The Meteorological Service of

  Mauritius named the system Tropical Storm Gula. The initial south to

  southeasterly motion came to a halt around 0600 UTC 28 January with

  Gula turning to a very slow west-northwesterly course. The storm

  continued to strengthen and had become a 75-kt tropical cyclone by

  0600 UTC on 29 January. (JTWC had upgraded Gula to 65-kts 1-min avg

  at 28/1200 UTC.)

 

     Gula's peak intensity based on MFR's warnings came at 29/1200 UTC

  when the estimated MSW reached 85 kts. JTWC's peak MSW (1-min avg) was

  also 85 kts, but this wasn't until 30/0000 UTC, at which time MFR had

  reduced the intensity to 75 kts. However, Karl Hoarau pointed out that

  in JTWC's JMV file (a sort of working "best track" file), the peak MSW

  had been set to 100 kts at 29/0600 UTC. At the time of its peak

  intensity Tropical Cyclone Gula was located about 375 nm southeast of

  Agalega, or about 135 nm north-northeast of the island of St. Brandon.

  The estimated minimum CP from MFR was 960 hPa. MFR's warnings

  indicated that gales extended outward only 40 nm from the center,

  except 80 nm in the southeastern quadrant. (JTWC's warnings reported

  gales extending outward 90-100 nm in all quadrants.)

 

     Tropical Cyclone Gula gradually turned to a west-southwesterly and

  then southerly track as it began to steadily weaken. The storm passed

  a short distance east of St. Brandon on the 30th after it had weakened

  to tropical storm status. After passing St. Brandon, Gula accelerated

  to the south-southwest, passing a little over 100 nm east of Mauritius

  on 31 January. MFR had lowered the intensity to 35 kts at 31/1200 UTC,

  but the storm underwent a modest re-intensification back to 50 kts six

  hours later. (JTWC's 1-min avg MSW history does not show this

  re-intensification, but rather a gradual weakening on the 30th and 31st.)

  Gula was declared extratropical at 1800 UTC on 1 February when located

  about 480 nm south-southwest of Mauritius. The ex-Gula extratropical

  gale continued to race toward higher latitudes and was nearing 40S by

  early on 3 February.

 

     No damage or casualties are known to have resulted from Tropical

  Cyclone Guba.

 

  (Report written by Gary Padgett)

 

  *************************************************************************

 

  NORTHWEST AUSTRALIA/SOUTHEAST INDIAN OCEAN (AUW) - From 90E to 135E

 

  Activity for January: 1 tropical cyclone

 

 

                           Sources of Information

                           ----------------------

 

     The primary sources of tracking and intensity information for

  Northwest Australia/Southeast Indian Ocean tropical cyclones are

  the warnings and advices issued by the Tropical Cyclone Warning

  Centres at Perth, Western Australia, and Darwin, Northern Territory.

  References to sustained winds imply a 10-minute averaging period

  unless otherwise stated.

 

     In the companion tropical cyclone tracks file, I occasionally

  annotate positions from warnings issued by the Joint Typhoon Warning

  Center (JTWC) of the U. S. Air Force and Navy, located at Pearl

  Harbor, Hawaii, when they differ from the Australian centres' coor-

  dinates by usually 40-50 nm or more. The JTWC warnings are also the

  source of the 1-minute average maximum sustained wind values included

  in the tracks file. Additionally, information describing details of

  satellite imagery and atmospheric circulation features included in

  the narratives is often gleaned from the JTWC warnings.

 

 

                 Northwest Australia/Southeast Indian Ocean

                       Tropical Activity for January

                 ------------------------------------------

 

     As the month of January opened, two systems were being following by

  BoM Perth. Tropical Cyclone Melanie was weakening off the coast of

  Western Australia, while gale warnings were being issued for another

  tropical LOW further west. The gales occurring with this system were

  monsoon gales in the northern quadrants and the system never acquired

  the structure of a tropical cyclone. A report and track graphic on

  TC Melanie prepared by BoM may be found at the following link:

 

  http://www.bom.gov.au/announcements/sevwx/wa/watc20071226.shtml

 

  Tracking information for these two systems may be found in the global

  cyclone tracks file for December, 2007.

 

     The only tropical cyclone to form between 90E and 135E during the

  month was Tropical Cyclone Helen, which formed in the Joseph Bonaparte

  Gulf and moved eastward, making landfall to the southwest of Darwin.

  A short report on TC Helen follows.

 

 

 

                          TROPICAL CYCLONE HELEN

                                 (TC-10S)

                              3 - 6 January

                   ------------------------------------------

 

     Tropical Cyclone Helen began as a slow-moving tropical LOW which

  formed over the Northern Territory's Top End during the closing days

  of December. The system spent several days inland before moving west-

  ward into the Joseph Bonaparte Gulf in early January. By 4 January the

  system had strengthened to Tropical Cyclone Helen, and abruptly turned

  eastward, moving inland southwest of Darwin as a Category 2 cyclone on

  the Australian Cyclone Severity Scale. Helen moved eastward, quickly

  weakening back into a tropical LOW which eventually moved out over

  the Gulf of Carpentaria. Redevelopment over the Gulf was considered

  a possibility, but this did not happen.

 

     A fairly detailed report prepared by BoM for Tropical Cyclone Helen

  is already available online and may be accessed at the following link:

 

  http://www.bom.gov.au/announcements/sevwx/nt/nttc20071231.shtml

 

  According to the BoM report, TC Helen was the first system to bring

  winds of Category 1 strength or higher to the city of Darwin since

  TC Gretel in April, 1985.

 

     Following is some additional information sent to the author by

  Derrick Herndon:

 

     "Charles Point AWS about 24 km WNW of Darwin reported gales for

  several hours prior to the landfall of Helen. The strongest winds

  occurred at 16:00 UTC on Jan 4th from the W@45 gusting to 65 kts. A

  nearby pressure of 992 mb put the MSLP at landfall around 988 mb. The

  environmental pressure in this region is low at about 1002 mb. The

  system appeared to be getting better organized just prior to landfall

  with the development of an eye feature in both microwave and radar

  imagery. Here is the radar image from BOM's page just after landfall:"

 

 
http://cimss.ssec.wisc.edu/tropic/archive/2008/storms/10S/200810S_04JAN17Z_r
adar.gif

 

  (Report written by Gary Padgett)

 

  *************************************************************************

 

  NORTHEAST AUSTRALIA/CORAL SEA (AUE) - From 135E to 160E

 

  Activity for January: No tropical cyclones

 

 

                           Sources of Information

                           ----------------------

 

     The primary sources of tracking and intensity information for

  Northeast Australia/Coral Sea tropical cyclones are the warnings

  and advices issued by the Tropical Cyclone Warning Centres at

  Brisbane, Queensland, and Darwin, Northern Territory, and on very

  infrequent occasions, by the centre at Port Moresby, Papua New

  Guinea. References to sustained winds imply a 10-minute averaging

  period unless otherwise stated.

 

     In the companion tropical cyclone tracks file, I occasionally

  annotate positions from warnings issued by the Joint Typhoon Warning

  Center (JTWC) of the U. S. Air Force and Navy, located at Pearl

  Harbor, Hawaii, when they differ from the Australian centres' coor-

  dinates by usually 40-50 nm or more. The JTWC warnings are also the

  source of the 1-minute average maximum sustained wind values included

  in the tracks file. Additionally, information describing details of

  satellite imagery and atmospheric circulation features included in

  the narratives is often gleaned from the JTWC warnings.

 

 

                       Northeast Australia/Coral Sea

                       Tropical Activity for January

                       -----------------------------

 

     No tropical cyclones formed within the area from 135E to 160E during

  January, but a rather vigorous LOW formed during the latter days of

  December and continued into the first week of January. This system was

  initially baroclinic but later appeared to be sustaining itself by

  convection. However, strong upper-level winds prevented it from making

  a complete transformation to a tropical cyclone, so it appears best

  described as a hybrid LOW during most of its life. BoM Brisbane

  initiated gale warnings on a developing LOW at 0000 UTC 27 December with

  the center estimated to be about 250 nm northeast of Rockhampton, Queens-

  land. The system moved slowly and erratically, remaining in the same

  general area for several days. Forecast winds had reached 50 kts by

  28/1200 UTC when the LOW was centered about 325 nm east-northeast of

  Rockhampton. The system maintained this strength for a couple of days

  and then weakened to 40 kts. (Note that the strong winds were not

  concentrated near the center as in the manner of a tropical cyclone.)

 

     The gale-center meandered slowly northward as it weakened while a

  new LOW formed well to the east, about 575 nm east-northeast of Brisbane.

  This new center became the dominant one and moved slowly southwestward,

  briefly strengthening to 45 kts on 3 January and then weakening. The

  final gale warning placed a 30-kt LOW center about 165 nm east-northeast

  of Brisbane at 0400 UTC 4 January.

 

     This hybrid storm system had a big impact on Queensland and New South

  Wales. At Fraser Island significant wave heights of 6 metres were

  measured, but according to Jeff Callaghan were likely close to 8 metres.

  Thousands of campers on the island were camped on the beach during the

  holiday break and had to be evacuated. Michael Bath, near Lismore, New

  South Wales, reports that in his area the storm produced rainfall over

  several days exceeding 1000 mm. On Friday, 4 January, some areas

  received 300 mm in three hours on top of streams and rivers which were

  already in moderate flood stage. Major flooding was experienced along

  the Tweed and Richmond Rivers. Michael has placed some pictures of the

  flooding at the following link:

 

  http://australiasevereweather.com/photography/photos/

 

  Click on any link dated January 4th to 9th for pictures of the flooding.

 

  (A special thanks to Michael Bath and Jeff Callaghan for the information

  they provided.)

 

  *************************************************************************

 

  SOUTH PACIFIC (SPA) - South Pacific Ocean East of Longitude 160E

 

  Activity for January: 3 tropical depressions

                         1 tropical storm

                         2 severe tropical cyclones

 

 

                           Sources of Information

                           ----------------------

 

     The primary sources of tracking and intensity information for

  South Pacific tropical cyclones are the warnings and advisories

  issued by the Tropical Cyclone Warning Centres at Nadi, Fiji (for

  waters north of latitude 25S), and Wellington, New Zealand (for

  waters south of latitude 25S). References to sustained winds imply

  a 10-minute averaging period unless otherwise stated.

 

     In the companion tropical cyclone tracks file, I occasionally

  annotate positions from warnings issued by the Joint Typhoon Warning

  Center (JTWC) of the U. S. Air Force and Navy, located at Pearl

  Harbor, Hawaii, when they differ from the Southern Hemisphere

  centres' coordinates by usually 40-50 nm or more. The JTWC warnings

  are also the source of the 1-minute average maximum sustained wind

  values included in the tracks file. Additionally, information

  describing details of satellite imagery and atmospheric circulation

  features included in the narratives is often gleaned from the JTWC

  warnings.

 

 

                 South Pacific Tropical Activity for January

                 -------------------------------------------

 

     Six systems were numbered as tropical depressions by RSMC Nadi during

  January. Three of these became named cyclones--Elisa, Funa and Gene--

  with Funa and Gene becoming fairly strong hurricanes. Reports on the

  three cyclones follow. Of the remaining tropical depressions, JTWC

  issued no warnings on these systems. Tropical Depression 08F formed

  on 9 January about 165 nm north-northeast of Port Vila, Vanuatu. The

  system drifted slowly eastward over the next couple of days, but Nadi

  significantly relocated the center over 200 nm to the east at 2100 UTC

  on 11 January to a point about 225 nm north-northeast of Viti Levu,

  Fiji, suggesting that a new, more dominant center had developed.

  Following this relocation, TD-08F drifted generally in a southerly

  direction just east of the Dateline, being last referenced at 14/0600 UTC

  a little over 200 nm east-northeast of Fiji.

 

     Tropical Depression 09F was very short-lived, lasting only about

  24 hours. Nadi first referenced this system at 2100 UTC on 12 January,

  placing the center approximately 400 nm southwest of Pago Pago, American

  Samoa. The system moved slowly southward and was dropped from the

  Tropical Disturbance Summaries after 13/2100 UTC. The peak winds

  reported in the Fiji bulletins for these depressions were only 25 kts.

  Tracks for TD-08F and TD-09F can be found in the companion cyclone tracks

  file. (Since I could not locate any agency which assigned a Dvorak

  rating of T2.0 for either system, I normally would not have included

  them in the tracks file. But as I anticipated each system to strengthen,

  I created the tracking files, and since I had them, I did not want to

  discard them.)

 

     The third depression, TD-11F, was a much more significant system.

  A developing tropical disturbance was located about 215 nm east of Pago

  Pago at 0600 UTC 19 January. Over the next several days the system

  moved slowly and erratically in the same general area--many of the

  apparent jogs in the track were no doubt relocations. RSMC Nadi first

  classified the disturbance as Tropical Depression 11F at 20/2100 UTC.

  A warning for peripheral gales was included in the bulletins beginning

  at 21/1800 UTC, and a warning for storm-force winds of 50 kts for the

  eastern quadrants was included beginning at 23/0000 UTC. These strong

  winds continued as the system moved southward into Wellington's AOR

  on the 24th and gradually turned toward the southwest. The final

  warning obtained by the author placed the still-strong extratropical

  LOW about 350 nm south-southwest of Tonga'tapu at 24/1800 UTC.

 

     TD-11F was not a "classic" tropical depression. Remarks in the

  satellite fix bulletins from Brisbane on the 21st indicated that the

  system was a large, monsoon gyre-type circulation with an extensive

  area of peripheral gales. There were extensive areas of banding but

  they were not really focused around the poorly-defined center. A

  Brisbane bulletin on the 22nd noted that the system was similar to a

  major June, 1994, LOW which almost destroyed a cruising fleet and was

  the subject of a book, "Rescue in the Pacific". Beginning on the

  22nd, SAB classified the system as subtropical using the Hebert/Poteat

  technique, and beginning with the 22/1800 UTC warning, RSMC Nadi

  changed the classification from 'tropical depression' to 'depression',

  ostensibly signifying the less tropical and more hybrid nature of the

  system.

 

 

 

                         TROPICAL CYCLONE ELISA

                            (TD-07F / TC-11P)

                             7 - 12 January

               ------------------------------------------

 

     A tropical disturbance just east of the International Dateline began

  to show signs of organization on 6 January, and the next day RSMC Nadi

  classified the system as Tropical Depression 07F. At 07/1800 UTC the

  partially-exposed center of TD-07F was located about 140 nm north of

  Tonga'tapu. The system drifted slowly southward over the next few days,

  and JTWC issued a TCFA on the 9th, followed by their first warning on

  TC-11P (35 kts) at 10/0000 UTC. At 0300 UTC on 10 January Nadi upgraded

  the depression to tropical cyclone status, assigning the name Elisa.

  The storm at that time was located only about 40 nm west-southwest of

  Tonga'tapu with the MSW estimated at 35 kts. Elisa began to curve toward

  the southeast as it slowly strengthened. The cyclone reached its peak

  intensity of 50 kts at 10/1800 UTC when centered about 150 nm south-

  southeast of Tonga'tapu.

 

     Elisa began to quickly weaken on 11 January due to the effects of

  cooling SSTs and increasing vertical shear. Fiji downgraded the system

  back to tropical depression status at 11/1200 UTC as it shifted to an

  increasingly eastward track. Although the peak winds near the center

  had decreased to 25 kts by 11/2100 UTC, warnings for peripheral gales

  were issued through 12/1800 UTC. By this time the former tropical

  cyclone had moved eastward to a point approximately 400 nm west-

  southwest of Rarotonga. JTWC's peak 1-min avg MSW estimate for Elisa

  was 45 kts, and the minimum CP estimated by Nadi was 980 hPa. At peak

  intensity RSMC Nadi reported that gales extended out 150 nm from the

  center in the southeastern semicircle and 50 nm elsewhere. However,

  JTWC's gale radius in the southeastern semicircle was only 60 nm.

 

     Dvorak ratings from CPHC, JTWC, Brisbane and SAB all reached T3.5/3.5

  (55 kts over 1-min), supporting Nadi's peak 10-min avg MSW of 50 kts.

  JTWC's only rating of T3.5/3.5 came at 10/1130 UTC when no warning was

  issued, and the numbers were coming down by 10/1730 UTC, which is likely

  the reason that agency did not go above 45 kts for a warning intensity.

 

     The following information was sent by Derrick Herndon:

 

     "Elisa brushed Fua'amotu in Tonga on January 10th with winds from

  340@28 gusting to 38 kts at 0400 UTC. The lowest pressure of 995 mb at

  the station occurred at 0100 UTC on the 10th. The sheared, weakening

  center passed directly over buoy 54930 located at 23.4S/170.0W at 1200

  UTC on the 11th with the buoy reporting a pressure of 986.5 mb."

 

     No reports of damage or casualties resulting from Tropical Cyclone

  Elisa have been received.

 

  (Report written by Gary Padgett)

 

 

 

                        SEVERE TROPICAL CYCLONE FUNA

                             (TD-10F / TC-12P)

                              15 - 20 January

              ------------------------------------------------

 

  A. Synoptic History

  -------------------

 

     Severe Tropical Cyclone Funa was the second intense tropical cyclone

  in the South Pacific basin during the 2007-2008 cyclone season, the

  first being Daman in early December. Funa formed just west of northern

  Vanuatu and moved on a "reverse curvature" track, moving eastward through

  the northern Vanuatuan islands, thence curving southeastward and

  eventually southward, and in its weakening stages moving to the south-

  west. A tropical disturbance had been located south of the Solomon

  Islands for several days, but began to organize rather quickly on

  15 January, resulting in RMSC Nadi classifying it as Tropical

  Depression 10F. The system was then centered approximately 350 nm

  west-northwest of Port Vila, Vanuatu. TD-10F moved eastward and

  quickly strengthened, becoming Tropical Cyclone Funa with 40-kt winds

  at 0600 UTC on 16 January. At the same time JTWC issued their first

  warning on TC-12P. Funa was then centered about 275 nm northwest of

  Port Vila.

 

     The cyclone moved eastward and intensified, crossing over the

  northern portion of Espiritu Santo Island around 16/1800 UTC with the

  MSW estimated at 50 kts. Funa continued to strengthen and passed over

  or very near the northern tip of Aurora Island around 17/0000 UTC with

  an intensity of 55 kts. After leaving Vanuatu, Funa began to curve

  toward the southeast as it slowly strengthened. Nadi upgraded the

  cyclone to severe tropical cyclone (i.e., hurricane) status with 70-kt

  winds at 18/0000 UTC with the storm located a little over 300 nm west

  of Suva, Fiji. The storm continued to curve toward the south and

  reached its peak intensity of 95 kts with an estimated CP of 930 hPa

  at 0000 UTC 19 January while centered about 250 nm southwest of Fiji.

  JTWC's peak 1-min avg MSW estimate was 105 kts, agreeing very well

  with Nadi's intensity. This equates to a Dvorak CI number of 5.5, and

  all the agencies available to the author (JTWC, Nadi, Brisbane, SAB,

  and CPHC) rendered a Dvorak rating of T5.5/5.5 at some point on either

  the 18th or 19th.

 

     After peaking in intensity, Funa continued southward, entering

  Wellington's AOR by 19/1800 UTC. The storm began to slowly weaken as it

  curved toward the southwest, and had become extratropical by 1800 UTC

  on 20 January about 325 nm northwest of New Zealand's North Cape. The

  final Wellington warning available to the author (20/1800 UTC) reported

  the CP at 957 hPa and the maximum winds at 60 kts. (I normally try to

  "grab" as many of the NZ warnings from their website and follow the

  extratropical stages of the storms for a few days at least. I must admit

  that for some unknown reason, I was unable to obtain any additional

  warnings on ex-Funa.)

 

 

  B. Meteorological History

  -------------------------

 

     The following information was sent by Derrick Herndon:

 

     "The center passed south of Sola (91551) at 2100 UTC on the 16th when

  the station estimated winds at 340@40 kts. The lowest pressure at the

  station was 990.7 mb at 1700 UTC on the 17th. Also, at 2100 UTC on the

  16th, Pekoa Airport (91554) reported a pressure of 988 mb with winds

  120@20 kts.

 

     "Funa's convection had significantly weakened by 1200 UTC on the 19th;

  however, the system maintained a robust warm core for at least another

  24 hours. Norfolk Island, located 180 nautical miles west of the center,

  at 1100 UTC on the 20th reported winds 30G47 kts and a pressure of

  989 mb. At 2000 UTC on the 20th a ship well south of the center

  reported winds 100@49 kts. The system was still spinning down when it

  passed over a buoy at 32.0S/167.5E which reported 982.5 mb at 2100 UTC

  on the 20th."

 

     Here is the AMSU imagery depicting Funa's warm core:

 

  http://amsu.ssec.wisc.edu/2008/12P.html

 

 

  C. Damage and Casualties

  ------------------------

 

 

     Even though Funa passed over some of the islands of Vanuatu as a

  moderately strong tropical cyclone, I have been unable to located any

  reports of damage or casualties resulting from the storm. If any become

  available later, they will included in a future summary.

 

  (Report written by Gary Padgett)

 

 

 

                        SEVERE TROPICAL CYCLONE GENE

                             (TD-12F / TC-15P)

                          26 January - 9 February

              ------------------------------------------------

 

  A. Introduction

  ---------------

 

     Severe Tropical Cyclone Gene was an unusually long-lived tropical

  cyclone for the South Pacific basin, existing as a tropical depression

  or cyclone for 11 days. The cyclone was notable for continuing as a

  tropical entity south of 25S in Wellington's AOR. Most tropical

  cyclones entering Wellington's AOR are either weakening or already

  undergoing extratropical transition and are usually classified as

  extratropical within 24 hours. Wellington maintained Gene as a tropical

  cyclone for 2.5 days before declaring the system extratropical.

 

 

  B. Synoptic History

  -------------------

 

     RSMC Fiji designated a developing tropical disturbance as Tropical

  Depression 12F on 26 January, placing a weak center about 365 nm north-

  northeast of Suva, Fiji. At 27/0600 UTC TD-12F was relocated to the

  east to a position approximately 275 nm east of Suva. The system began

  to intensify rather quickly and JTWC issued their first warning on

  TC-15P at 27/1800 UTC. At 2100 UTC the depression's center was located

  near the southern end of the Fijian island of Vanua Levu, and three

  hours later was upgraded to Tropical Cyclone Gene with 40-kt winds.

  Gene was moving on a west-southwesterly trajectory and was crossing over

  Viti Levu around 0600 UTC on 28 January. Thereafter, the cyclone

  continued to moved away from Fiji toward the southern islands of the

  Republic of Vanuatu. The cyclone strengthened to 55 kts at 29/0000 UTC,

  but temporarily weakened back to 45 kts later on the 29th due to the

  effects of moderate vertical shear. Environmental conditions soon

  improved and Gene began to re-intensify, reaching severe tropical cyclone

  (hurricane) status at 30/0600 UTC while located about 275 nm west of

  Viti Levu.

     

     The cyclone continued to slowly intensify as it continued on its west-

  southwesterly course, reaching a peak intensity of 85 kts (estimated CP

  945 hPa) at 1800 UTC 31 January while centered approximately 175 nm

  southeast of Port Vila, Vanuatu. (JTWC's peak estimated 1-min avg MSW

  of 100 kts is equivalent to a 10-min avg MSW of 85 kts, so the two

  warning agencies were in close agreement.) The cyclone at this time

  was located just east of the southeasternmost islands of Vanuatu, but

  shortly thereafter turned abruptly toward the south, relieving the

  threat to the islands. Gene maintained its peak intensity for about

  24 hours, then began to slowly weaken. Nadi downgraded the cyclone to

  below hurricane status at 02/1200 UTC, and the storm's intensity leveled

  off around 50-55 kts as it continued southward toward the 25th parallel

  and Wellington's AOR.

 

     Very interestingly, as Gene crossed 25S into New Zealand's area of

  warning responsibility, it appeared to significantly re-intensity. In

  their very first warning, the Wellington office raised the peak winds

  near the center from 50 kts back to 65 kts. The cyclone at this time

  was located about 425 nm east-southeast of Noumea, New Caledonia. The

  resurge in strength, however, was short-lived, and the winds were dropped

  back to 60 kts after 12 hours. After crossing 25S, Tropical Cyclone

  Gene gradually curved to a southeasterly and later east-southeasterly

  trajectory. The system remained just under hurricane strength for a

  couple of days, then began to re-intensify as it underwent extratropical

  transition and regained an intensity of 65 kts at 0000 UTC on 6 February.

  Wellington classified Gene as fully extratropical at 06/0600 UTC and

  at the same time JTWC issued their final warning. The ex-Gene storm

  continued to move steadily on a general east-southeasterly track as it

  slowly weakened. The final Wellington warning available to the author

  at 1800 UTC 9 February placed a weakening 35-kt gale center approximately

  1300 nm south-southwest of Rarotonga.

 

     While JTWC's peak intensity of 100 kts (1-min avg) matched very well

  with RSMC Nadi's peak 10-min mean wind of 85 kts, in general throughout

  Gene's lifetime JTWC's estimated MSW values were less than Fiji's and/or

  Wellington's intensity estimates. In numerous cases JTWC's 1-min avg

  MSW was actually less than Fiji's 10-min avg estimate. The peak Dvorak

  classification noted by the author was a rating of T6.0/6.0 from SAB at

  0830 UTC on 31 January. The peak Dvorak rating from JTWC and Nadi was

  T5.5/5.5, while the highest noted from CPHC and Brisbane was T5.0/5.0.

 

 

  C. Damage and Casualties

  ------------------------

 

     Press reports indicated that seven deaths resulted from Tropical

  Cyclone Gene's passage across Fiji. A total of 61 houses were destroyed

  completely, and there was significant damage to roads, schools, forestry,

  and agriculture. Also there was considerable disruption to water and

  electrical services, and delivery of supplies to hospitals and health

  care facilities was also affected. The estimated total cost of the

  storm was estimated to exceed $45 million.

 

  (Report written by Gary Padgett)

 

  *************************************************************************

 

         SPECIAL FEATURE - SOURCES OF TROPICAL CYCLONE INFORMATION

 

     The purpose of this section is to list some websites where many and

  varied types of tropical cyclone information are archived. Many readers

  will know about these already, but for the benefit of those who don't,

  I wanted to include them.

 

  (1) Aircraft Reconnaissance Information

  ---------------------------------------

 

     Various types of messages from reconnaissance aircraft may be

  retrieved from the following FTP site:

 

     ftp://ftp.nhc.noaa.gov/pub/products/nhc/recon/

 

     Information regarding how to interpret the coded reconnaissance

  messages may be found at the following URL:

 

     http://www.nhc.noaa.gov/reconlist.shtml

 

  Links are also included to websites with further information about the

  U. S. Air Force 53rd Weather Reconnaissance Squadron and the NOAA Air-

  craft Operations Center.

 

  (2) Archived Advisories

  -----------------------

 

     All the advisory products (public advisories, forecast/advisories,

  strike probabilities, discussions, various graphics) issued by TPC/NHC

  are archived on TPC's website. For the current year (using 2004 as an

  example), the archived products can be found at:

 

     http://www.nhc.noaa.gov/archive/2004/index.shtml

 

  Links to tropical products archives for earlier years are available at

  the following URL:

 

     http://www.nhc.noaa.gov/pastall.shtml

 

  JTWC warnings for past storms are archived on the NRL Monterrey website:

 

     http://www.nrlmry.navy.mil/tc_pages/tc_home.html

 

  On the NRL site, the link to past years can be found in the upper left

  corner of the screen.

 

     I am not aware at the moment of any other TCWC which archives all

  its tropical cyclone warning/advisory products for public access, but

  if I learn of any, I will add them to this list.

 

  (3) Satellite Imagery

  ---------------------

 

     Satellite images of tropical cyclones in various sensor bands are

  available on the NRL Monterrey and University of Wisconsin websites,

  courtesy of Jeff Hawkins and Chris Velden and their associates. The

  links are:

 

     http://www.nrlmry.navy.mil/tc_pages/tc_home.html

 

     http://cimss.ssec.wisc.edu/tropic/tropic.html

 

  On the NRL site, the link to past years can be found in the upper left

  corner of the screen. For the CIMSS site, a link to data archives is

  located in the lower left portion of the screen.

 

     Additional tropical satellite imagery, along with looping ability for

  composite microwave imagery for the Western Hemisphere north of the

  equator, can be found at:

 

  (1) For the Eastern North Pacific:

 

     http://www.ssd.noaa.gov/PS/TROP/trop-epac.html

 

  (2) For the Atlantic, Gulf of Mexico and Caribbean Sea:

 

     http://www.ssd.noaa.gov/PS/TROP/trop-atl.html

 

  (4) Cyclone Tracking Information

  --------------------------------

 

     There is a U. S. Navy site that tracks tropical cyclones at 6-hourly

  intervals which often includes pre and post-advisory positions. The

  link to the site is:

 

  http://www.nrlmry.navy.mil/atcf_web/doc_archives/

 

     Steve Young has compiled many of these tracks onto a single webpage

  which is very user-friendly:

 

  http://home.earthlink.net/~shy9/tc1.htm

 

 

     I'm sure there are other sites with available imagery available, and

  as I learn of them, I will add the links to this list.

 

  *************************************************************************

 

                                EXTRA FEATURE

 

     In order to shorten the amount of typing in preparing the narrative

  material, I have been in the habit of freely using abbreviations and

  acronyms. I have tried to define most of these with the first usage

  in a given summary, but I may have missed one now and then. Most of

  these are probably understood by a majority of readers but perhaps a

  few aren't clear to some. To remedy this I developed a Glossary of

  Abbreviations and Acronyms which I first included in the August, 1998

  summary. I don't normally include the Glossary in most months in

  order to help keep them from being too long. If anyone would like to

  receive a copy of the Glossary, please e-mail me and I'll be happy

  to send them a copy.

 

  *************************************************************************

 

  AUTHOR'S NOTE: This summary should be considered a very preliminary

  overview of the tropical cyclones that occur in each month. The cyclone

  tracks (provided separately) will generally be based upon operational

  warnings issued by the various tropical cyclone warning centers. The

  information contained therein may differ somewhat from the tracking and

  intensity information obtained from a "best-track" file which is based

  on a detailed post-seasonal analysis of all available data. Information

  on where to find official "best-track" files from the various warning

  centers will be passed along from time to time.

 

    The track files are not being sent via e-mail. They can be retrieved

  from the archive sites listed below. (Note: I do have a limited e-mail

  distribution list for the track files. If anyone wishes to receive

  these via e-mail, please send me a message.)

 

    Both the summaries and the track files are standard text files

  created in DOS editor. Download to disk and use a viewer such as

  Notepad or DOS editor to view the files.

 

     The first summary in this series covered the month of October,

  1997. Back issues can be obtained from the following websites

  (courtesy of Michael Bath, Michael V. Padua, Michael Pitt, Chris

  Landsea, and John Diebolt):

 

    http://australiasevereweather.com/cyclones/

    http://www.typhoon2000.ph <http://www.typhoon2000.ph/>

    http://mpittweather.com <http://mpittweather.com/>

    ftp://ftp.aoml.noaa.gov/hrd/pub/landsea/padgett/

    http://www.tropicalcyclone2005.com/

 

 

     Another website where much information about tropical cyclones may

  be found is the website for the UK Meteorological Office. Their site

  contains a lot of statistical information about tropical cyclones

  globally on a monthly basis. The URL is:

 

    http://www.metoffice.gov.uk/weather/tropicalcyclone

    

 

                    TROPICAL CYCLONE REPORTS AVAILABLE

 

     JTWC now has available on its website the Annual Tropical Cyclone

  Report (ATCR) for 2006 (2005-2006 season for the Southern Hemisphere).

  ATCRs for earlier years are available also.

 

     The URL is: http://metocph.nmci.navy.mil/jtwc.php

 

     Also, TPC/NHC has available on its webpage nice "technicolor"

  tracking charts for the 2007 Atlantic and Eastern North Pacific

  tropical cyclones; also, storm reports for all the 2007 Atlantic

  and Eastern North Pacific cyclones are now available, as well as

  track charts and reports on storms from earlier years.

 

     The URL is: http://www.nhc.noaa.gov <http://www.nhc.noaa.gov/>

 

 

     A special thanks to Michael Bath of McLeans Ridges, New South Wales,

  Australia, for assisting me with proofreading the summaries.

 

 

  PREPARED BY

 

  Gary Padgett

  E-mail: garyp@alaweb.com

  Phone: 334-222-5327

 

  Kevin Boyle (Northwest Pacific)

  E-mail: newchapelobservatory@btinternet.com

 

  *************************************************************************

  *************************************************************************

 

+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
To unsubscribe from WX-TROPL send e-mail to LISTSERV@PO.UIUC.EDU with
"unsub wx-tropl" in the body of your message. For help with WX-TROPL
write to cnovy@cox.net. For more information on tropical weather products, see the NHC Homepage at http://www.nhc.noaa.gov.



This archive was generated by hypermail 2b29 : Wed Dec 03 2008 - 20:15:11 EST