Tropical Cyclones [Index]

Southern Hemisphere 2008-2009 Tropical Cyclone Season Review [Summaries and Track Data] [Prepared by Gary Padgett]

              A REVIEW OF THE 2008-2009 TROPICAL CYCLONE SEASON

                         FOR THE SOUTHERN HEMISPHERE

     Following is a tabular summary of all the tropical depressions
  and tropical cyclones which occurred in the Southern Hemisphere
  between 1 July 2008 and 30 June 2009 as reported in the Monthly
  Global Tropical Cyclone Summaries prepared by the author.

    (1) Number - this is the sequential cyclone number assigned by JTWC
        in Hawaii.

    (2) Name - the name (if any) assigned by the responsible Tropical
        Cyclone Warning Centre.  For systems in the South Indian Ocean
        west of 90E and in the Southwest Pacific east of 160E which were
        unnamed, the alphanumeric designator applied by La Reunion or
        Fiji, respectively, is given in this column.

    (3) Dates - range of dates for which tracking information for the 
        cyclone is available in the Global Tropical Cyclone Tracks files
        prepared by the author.  The dates given in most cases refer to
        the time the system was in warning status and generally do not
        include the pre-depression stages of the disturbance.

    (4) Pressure - Lowest central pressure (either estimated or recorded)
        during the lifetime of the cyclone.  An asterisk (*) following
        the pressure indicates the reading was an actual measured
        pressure.   Central pressure is given in millibars, which is
        numerically equivalent to hectopascals.

    (5) MSW 1-min avg - maximum 1-minute average sustained windspeed in 
        knots as assigned by JTWC.  An asterisk (*) following the MSW
        indicates that it was an actual measured value.

    (6) MSW 10-min avg - maximum 10-minute average sustained windspeed
        in knots as assigned by the responsible Tropical Cyclone Warning
        Centre.  An asterisk (*) following the MSW indicates that it was
        an actual measured value.

    (7) Basins - tropical cyclone basins where the cyclone tracked during
        its life:

        SWI - Southwest Indian Ocean - West of 90E
        AUW - Northwest Australia/Southeast Indian Ocean - 90E to 135E
        AUE - Northeast Australia/Coral Sea - 135E to 160E
        SPA - South Pacific Ocean - East of 160E
        SAT - South Atlantic Ocean

     A number in parentheses (e.g. (1) ) following an entry refers to
  a note following the entries for the given basin.   A separate table
  is given for each of the four Southern Hemisphere basins.

     Abbreviations for Tropical Cyclone Warning Centres:

  JTWC -    Joint Typhoon Warning Center, formerly on Guam, now at
            Pearl Harbor, Hawaii
  MFR -     Meteo France Reunion (RSMC La Reunion)
  RSMC -    Regional Specialised Meteorological Centre

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                           SOUTHWEST INDIAN OCEAN

 JTWC    NAME                DATES          CENT    MSW   MSW    BASIN
 NUM                                        PRS   1-MIN 10-MIN
                                            (mb)   (kts) (kts)
 ------------------------------------------------------------------------

 01S  Asma                  16-23 Oct        985     55    45    SWI
 03S  Bernard               19-21 Nov        994     40    35    SWI
 04S  Cinda                 15-21 Dec        985     55    50    SWI
 06S  Dongo                 08-18 Jan        985     55    50    SWI
 08S  Eric                  17-21 Jan        994     35    35    SWI
 09S  Fanele                18-27 Jan        927    100   100    SWI
 13S  Gael                  01-12 Feb        934    120    95    SWI
 16S  Hina                  21-26 Feb        980     60    55    SWI
 19S  (MFR-10)              08-10 Mar        997     35    30    SWI
 24S  Izilda                24-29 Mar        974     65    60    SWI
 26S  Jade                  03-14 Apr        975     65    60    SWI

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                NORTHWEST AUSTRALIA / SOUTHEAST INDIAN OCEAN

 JTWC    NAME                DATES          CENT    MSW   MSW    BASIN
 NUM                                        PRS   1-MIN 10-MIN
                                            (mb)   (kts) (kts)
 ------------------------------------------------------------------------

 02S  Anika                 19-21 Nov        990     50    50    AUW
 05S  Billy                 17-29 Dec        948    105    95    AUW
 10S  Dominic               25-27 Jan        980     50    50    AUW
 14S  Freddy                03-15 Feb        983     55    50    AUW
 ---  -----                 26-28 Feb        996     --    30    AUW
 17S  Gabrielle             01-05 Mar        998     35    40    AUW (1)
 22S  Ilsa                  17-27 Mar        958    110    90    AUW
 27S  Kirrily               26-29 Apr        998     40    35    AUW

 NOTES:

 (1) During a post-storm analysis, it was determined that Gabrielle had
     not met Australia's requirements for a tropical cyclone.  Gales did
     occur in one quadrant or another at a time, but to qualify as a
     tropical cyclone, gales must occur in at least two quadrants
     simultaneously for at least six hours.

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                      NORTHEAST AUSTRALIA / CORAL SEA

 JTWC    NAME                DATES          CENT    MSW   MSW    BASIN
 NUM                                        PRS   1-MIN 10-MIN
                                            (mb)   (kts) (kts)
 ------------------------------------------------------------------------

 07P  Charlotte             09-12 Jan        987     35    45    AUE
 12P  Ellie                 29 Jan-01 Feb    990     40    40    AUE (1)
 18P  Hamish                05-13 Mar        925    130   115    AUE
 ---  -----                 18-22 Mar        997     --    40    AUE/SPA (2)
 23P  Jasper                22-26 Mar        980     45    55    AUE/SPA
 ---  -----                 16-25 Apr        988     --    45    AUE/SPA (3)


 NOTES:

 (1) Ingham (WMO 32078, 18.65S/146.18E, Alt. 11.8m) reported a 10-min
     mean wind of 43 kts at 31/1700 UTC.

 (2) While within Brisbane's AOR, this system was more tropical in nature
     and had some associated gales.  After moving into Nadi's AOR, the
     LOW took on a more hybrid character.

 (3) According to Derrick Herndon, on 23 April the AMSU intensity
     algorithm suggested a CP of 970 mb and winds of 70 kts.  He also
     noted that QuikScat imagery on the same date indicated wind flags
     of 60 kts.  The LOW at this time sported a large eye-like feature,
     and since it appeared to be warm core and driven by convective
     instead of baroclinic processes, it may possibly have been a
     tropical cyclone.

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                             SOUTH PACIFIC OCEAN

 JTWC    NAME                DATES          CENT    MSW   MSW    BASIN
 NUM                                        PRS   1-MIN 10-MIN
                                            (mb)   (kts) (kts)
 ------------------------------------------------------------------------

 ---  (05F)                 12-14 Jan       999      --    30    SPA
 ---  (06F)                 19-23 Jan      1006      --    30    SPA (1)
 11P  Hettie                25-31 Jan       993      35    35    SPA
 ---  (09F)                 01-05 Feb       997      --    30    SPA (1)
 15P  Innis                 14-24 Feb       990      35    40    SPA
 20P  Joni                  10-15 Mar       980      55    55    SPA
 21P  Ken                   16-24 Mar       985      45    50    SPA
 25P  Lin                   31 Mar-09 Apr   975      50    60    SPA
 ---  -----                 15-18 Apr      1004      40    --    SPA (2)

 NOTES:

 (1) Peripheral gales occurred with this system.

 (2) System was a subtropical LOW.  SAB rendered a Hebert/Poteat number
     of ST3.0 on 16 April.  The CP value is based upon NCEP reanalysis
     data.

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 Prepared by Gary Padgett
 E-mail: [email protected]
 Home Phone: 334-222-5327