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Tropical Cyclone GITA : JTWC Advisories
Season 1998-1999 Summaries (Operational Data): [AU] [SIO] [SPAC] [SH]
---> Tropical Cyclone GITA Track Map and Data

WHPS31 PHNC 990227 21:00z
1. TROPICAL CYCLONE 24P WARNING NR 001
   01 ACTIVE TROPICAL CYCLONE IN SOUTHEASTPAC
   MAX SUSTAINED WINDS BASED ON ONE-MINUTE AVERAGE
    ---
   WARNING POSITION:
   271800Z8 --- NEAR 26.5S3 154.9W9
     MOVEMENT PAST SIX HOURS - 140 DEGREES AT 08 KTS
     POSITION ACCURATE TO WITHIN 060 NM
     POSITION BASED ON CENTER LOCATED BY SATELLITE
   PRESENT WIND DISTRIBUTION:
   MAX SUSTAINED WINDS - 035 KT, GUSTS 045 KT
   ---REPEAT POSIT: 26.5S3 154.9W9
   FORECASTS:
   12 HRS, VALID AT:
   280600Z6 --- 27.8S7 154.2W2
   MAX SUSTAINED WINDS - 045 KT, GUSTS 055 KT
   RADIUS OF 035 KT WINDS - 120 NM NORTHEAST SEMICIRCLE
                            090 NM ELSEWHERE
   VECTOR TO 24 HR POSIT: 155 DEG/ 07 KTS
    ---
   24 HRS, VALID AT:
   281800Z9 --- 29.0S1 153.6W5
   MAX SUSTAINED WINDS - 045 KT, GUSTS 055 KT
   RADIUS OF 035 KT WINDS - 120 NM NORTHEAST SEMICIRCLE
                            090 NM ELSEWHERE
   VECTOR TO 36 HR POSIT: 160 DEG/ 08 KTS
    ---
   36 HRS, VALID AT:
   010600Z7 --- 30.5S8 153.0W9
   MAX SUSTAINED WINDS - 045 KT, GUSTS 055 KT
   RADIUS OF 035 KT WINDS - 120 NM NORTHEAST SEMICIRCLE
                            090 NM ELSEWHERE
   VECTOR TO 48 HR POSIT: 175 DEG/ 08 KTS
    ---
   EXTENDED OUTLOOK:
   48 HRS, VALID AT:
   011800Z0 --- 32.0S5 152.8W6
   MAX SUSTAINED WINDS - 045 KT, GUSTS 055 KT
   RADIUS OF 035 KT WINDS - 120 NM EAST SEMICIRCLE
                            090 NM ELSEWHERE
    ---
REMARKS:
SATELLITE IMAGERY SHOWS DEEP CENTRALIZED CONVECTION NEAR THE
CENTER.  THIS SYSTEM IS POSITIONED BETWEEN TWO HIGH PRESSURE
CENTERS AND HAS LITTLE STEERING FLOW.  EXPECT INTENSIFICATION OVER
THE NEXT 12 HOURS. MAXIMUM SIGNIFICANT WAVE HEIGHT AT 271800Z IS
14 FEET. NEXT WARNINGS AT 280900Z9 AND 282100Z3.//
=========================================================================
WHPS31 PHNC 990228 09:00z
1. TROPICAL CYCLONE 24P WARNING NR 002
   01 ACTIVE TROPICAL CYCLONES IN SOUTHEASTPAC
   MAX SUSTAINED WINDS BASED ON ONE-MINUTE AVERAGE
    ---
   WARNING POSITION:
   280600Z6 --- NEAR 27.6S5 155.6W7
     MOVEMENT PAST SIX HOURS - 185 DEGREES AT 07 KTS
     POSITION ACCURATE TO WITHIN 060 NM
     POSITION BASED ON CENTER LOCATED BY SATELLITE
   PRESENT WIND DISTRIBUTION:
   MAX SUSTAINED WINDS - 030 KT, GUSTS 040 KT
   DISSIPATING AS A SIGNIFICANT TROPICAL CYCLONE OVER WATER
   REPEAT POSIT: 27.6S5 155.6W7
    ---
   FORECASTS:
   12 HRS, VALID AT:
   281800Z9 --- 29.1S2 156.3W5
   MAX SUSTAINED WINDS - 030 KT, GUSTS 040 KT
   DISSIPATING AS A SIGNIFICANT TROPICAL CYCLONE OVER WATER
   VECTOR TO 24 HR POSIT: 215 DEG/ 11 KTS
    ---
   24 HRS, VALID AT:
   010600Z7 --- 30.9S2 157.8W1
   MAX SUSTAINED WINDS - 025 KT, GUSTS 035 KT
   DISSIPATED AS A SIGNIFICANT TROPICAL CYCLONE OVER WATER
    ---
REMARKS:
CURRENT METSAT IMAGERY INDICATES OVERALL CONVECTION HAS DECREASED
IN THE LAST SIX HOURS. ALSO THE LOW LEVEL CIRCULATION IS
COMPLETELY EXPOSED AND MOVING TO THE SOUTH-SOUTHWEST, WHILE THE
UPPER LEVEL FLOW MOVES TO THE EAST-SOUTHEAST.  THIS SYSTEM
IS BEING SHEARED BY THE FRONTAL BOUNDARY LOCATED THE
EAST-SOUTHEAST OF THIS SYSTEM. THIS SYSTEM REMAINS SHALLOW
AND THE PREDOMINANT STEERING MECHANISM AT THIS TIME IS
THE SURFACE HIGH PRESSURE CENTER LOCATED TO THE SOUTH-SOUTHEAST.
MAXIMUM SIGNIFICANT WAVE HEIGHT AT 280600Z IS 14 FEET.
REFER TO WWPN30 PHNC FOR ADDITIONAL SEA HEIGHT INFORMATION.
THIS IS THE FINAL WARNING ON THIS SYSTEM BY THE NAVAL PACIFIC
METEOROLOGY AND OCEANOGRAPHY CENTER (NAVPACMETOCCEN). THE SYSTEM
WILL BE CLOSELY MONITORED FOR SIGNS OF REGENERATION.//

Tropical cyclone tracks developed by Michael Bath using operational warnings and advisories.


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Document: tropical_cyclone_gita_jtwc_advisories.htm Updated: 4 September 2016