Subject: Indian-S: Technical Discussion (Automatic)

From: SIU Weather Processor <[email-masked]>
Date: Mon, 27 Jan 1997 20:24:45 -0600

266
WTXS32 PGTW 280300
IMMEDIATE DELIVERY REQ TO AMEMBASSY PORT LOUIS
1. TROPICAL CYCLONE 20S (GRETELLE) WARNING NR 019
   03 ACTIVE TROPICAL CYCLONES IN SOUTHIO
   MAX SUSTAINED WINDS BASED ON ONE-MINUTE AVERAGE
    ---
   WARNING POSITION:
   280000Z0 --- 26.2S0 36.2E1
     MOVEMENT PAST SIX HOURS - 270 DEGREES AT 04 KTS
     POSITION ACCURATE TO WITHIN 090 NM
     POSITION BASED ON CENTER LOCATED BY A COMBINATION OF
     SATELLITE AND EXTRAPOLATION
   PRESENT WIND DISTRIBUTION:
   MAX SUSTAINED WINDS - 045 KT, GUSTS 055 KT
   RADIUS OF 035 KT WINDS - 125 NM SOUTHEAST SEMICIRCLE
                            085 NM ELSEWHERE
   REPEAT POSIT: 26.2S0 36.2E1
    ---
   FORECASTS:
   12 HRS, VALID AT:
   281200Z3 --- 26.4S2 35.6E4
   MAX SUSTAINED WINDS - 050 KT, GUSTS 065 KT
   RADIUS OF 035 KT WINDS - 135 NM SOUTHEAST SEMICIRCLE
                            095 NM ELSEWHERE
   VECTOR TO 24 HR POSIT: 210 DEG/ 02 KTS
    ---
   24 HRS, VALID AT:
   290000Z1 --- 26.7S5 35.4E2
   MAX SUSTAINED WINDS - 055 KT, GUSTS 070 KT
   RADIUS OF 050 KT WINDS - 040 NM EAST SEMICIRCLE
                            030 NM ELSEWHERE
   RADIUS OF 035 KT WINDS - 140 NM EAST SEMICIRCLE
                            105 NM ELSEWHERE
   VECTOR TO 36 HR POSIT: 195 DEG/ 02 KTS
    ---
   36 HRS, VALID AT:
   291200Z4 --- 27.1S0 35.3E1
   MAX SUSTAINED WINDS - 055 KT, GUSTS 070 KT
   RADIUS OF 050 KT WINDS - 040 NM NORTHEAST SEMICIRCLE
                            030 NM ELSEWHERE
   RADIUS OF 035 KT WINDS - 140 NM NORTHEAST SEMICIRCLE
                            105 NM ELSEWHERE
   VECTOR TO 48 HR POSIT: 180 DEG/ 02 KTS
    ---
   EXTENDED OUTLOOK:
   48 HRS, VALID AT:
   300000Z3 --- 27.5S4 35.3E1
   MAX SUSTAINED WINDS - 050 KT, GUSTS 065 KT
   BECOMING EXTRATROPICAL
   RADIUS OF 035 KT WINDS - 140 NM NORTHEAST SEMICIRCLE
                            105 NM ELSEWHERE
    ---
REMARKS:
280300Z3 POSITION 26.2S0   36.0E9
TROPICAL CYCLONE 20S (GRETELLE) IS TRACKING SOUTHWESTWARD
AT 4 KNOTS IN THE MOZAMBIQUE CHANNEL. TC 20S IS FORECAST
TO INTENSIFY OVER THE NEXT 24 HOURS OVER THE MOZAMBIQUE
CHANNEL AND TO BEGIN EXTRATROPICAL TRANSITION NEAR THE
48-HOUR FORECAST POSITION. NEXT WARNINGS AT 281500Z6 (DTG
281355Z4) AND 290300Z4 (DTG 290155Z2). MAXIMUM
SIGNIFICANT WAVE HEIGHT AT 28/0000Z0 IS 16 FEET. REFER TO
TROPICAL CYCLONE 19S (PANCHO-HELINDA) WARNINGS (WTXS31
PGTW) AND TO TROPICAL CYCLONE 21S (ILETTA) WARNINGS
(WTXS33 PGTW) FOR TWELVE-HOURLY UPDATES.//

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