Subject: Indian-S: 02 Active Tropical Cyclones In Southern Hemisphere

From: SIU Weather Processor <[email-masked]>
Date: Sun, 28 Dec 1997 08:08:54 -0600

330
WTXS32 PGTW 281500
1. TROPICAL CYCLONE 09S (SELWYN) WARNING NR 004
   02 ACTIVE TROPICAL CYCLONES IN SOUTHERN HEMISPHERE
   MAX SUSTAINED WINDS BASED ON ONE-MINUTE AVERAGE
    ---
   WARNING POSITION:
   281200Z3 --- 16.3S0 107.9E7
     MOVEMENT PAST SIX HOURS - 240 DEGREES AT 06 KTS
     POSITION ACCURATE TO WITHIN 045 NM
     POSITION BASED ON EYE FIXED BY SATELLITE
   PRESENT WIND DISTRIBUTION:
   MAX SUSTAINED WINDS - 060 KT, GUSTS 075 KT
   RADIUS OF 050 KT WINDS - 020 NM
   RADIUS OF 035 KT WINDS - 050 NM SOUTHEAST SEMICIRCLE
                            045 NM ELSEWHERE
   REPEAT POSIT: 16.3S0 107.9E7
    ---
   FORECASTS:
   12 HRS, VALID AT:
   290000Z1 --- 16.8S5 106.8E5
   MAX SUSTAINED WINDS - 050 KT, GUSTS 065 KT
   RADIUS OF 035 KT WINDS - 040 NM SOUTHEAST SEMICIRCLE
                            035 NM ELSEWHERE
   VECTOR TO 24 HR POSIT: 240 DEG/ 07 KTS
    ---
   24 HRS, VALID AT:
   291200Z4 --- 17.5S3 105.6E2
   MAX SUSTAINED WINDS - 045 KT, GUSTS 055 KT
   RADIUS OF 035 KT WINDS - 040 NM SOUTHEAST SEMICIRCLE
                            035 NM ELSEWHERE
   VECTOR TO 36 HR POSIT: 240 DEG/ 07 KTS
    ---
   36 HRS, VALID AT:
   300000Z3 --- 18.2S1 104.3E8
   MAX SUSTAINED WINDS - 040 KT, GUSTS 050 KT
   DISSIPATING AS A SIGNIFICANT TROPICAL CYCLONE OVER
WATER
   RADIUS OF 035 KT WINDS - 035 NM SOUTHEAST SEMICIRCLE
                            025 NM ELSEWHERE
   VECTOR TO 48 HR POSIT: 240 DEG/ 07 KTS
    ---
   EXTENDED OUTLOOK:
   48 HRS, VALID AT:
   301200Z6 --- 18.9S8 103.1E5
   MAX SUSTAINED WINDS - 035 KT, GUSTS 045 KT
   DISSIPATING AS A SIGNIFICANT TROPICAL CYCLONE OVER
WATER
    ---
REMARKS:
281500Z6 POSITION 16.4S1  107.6E4
TROPICAL CYCLONE 09S (SELWYN) IS MOVING WEST-
SOUTHWESTWARD AT 06 KNOTS. THE WARNING POSITION AND
INTENSITY ARE BASED ON 281130Z5 INFRARED SATELLITE
IMAGERY. THE SYSTEM IS EXPECTED TO WEAKEN AS IT
ENCOUNTERS CONTINUE UPPER-LEVEL WINDS SHEAR. TC 09S
(SELWYN) IS FORECAST TO CONTINUE A WEST-SOUTHWESTWARD
TRACK THROUGHOUT THE FORECAST PERIOD. MAXIMUM SIGNIFICANT
WAVE HEIGHT AT 281200Z IS 15 FEET. NEXT WARNINGS AT
290300Z4 (DTG 290153Z0) AND 291500Z7 (DTG 291353Z3).
REFER TO TROPICAL CYCLONE 08S (SID) WARNING 06 (WTPS31
PGTW) FOR FINAL WARNING.//

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