Subject: Indian-S: 01 Active Tropical Cyclones In South Indian Ocean

From: SIU Weather Processor <[email-masked]>
Date: Sun, 21 Mar 1999 20:51:26 -0600

999
WTXS34 PGTW 220300
1. TROPICAL CYCLONE 30S (VANCE) WARNING NR 014
   01 ACTIVE TROPICAL CYCLONES IN SOUTH INDIAN OCEAN
   MAX SUSTAINED WINDS BASED ON ONE-MINUTE AVERAGE
    ---
   WARNING POSITION:
   220000Z4 --- NEAR 21.8S1 114.4E0
     MOVEMENT PAST SIX HOURS - 180 DEGREES AT 12 KTS
     POSITION ACCURATE TO WITHIN 030 NM
     POSITION BASED ON EYE FIXED BY A COMBINATION OF
     SATELLITE, RADAR AND SYNOPTIC DATA
   PRESENT WIND DISTRIBUTION:
   MAX SUSTAINED WINDS - 125 KT, GUSTS 150 KT
   RADIUS OF 100 KT WINDS - 020 NM EAST SEMICIRCLE
                                   OVER WATER
                            015 NM ELSEWHERE OVER WATER
   RADIUS OF 050 KT WINDS - 075 NM EAST SEMICIRCLE
                                   OVER WATER
                            065 NM ELSEWHERE OVER WATER
   RADIUS OF 035 KT WINDS - 160 NM EAST SEMICIRCLE
                                   OVER WATER
                            150 NM ELSEWHERE OVER WATER
   REPEAT POSIT: 21.4S7 114.4E0
    ---
   FORECASTS:
   12 HRS, VALID AT:
   221200Z7 --- 27.8S4 116.5E3
   MAX SUSTAINED WINDS - 080 KT, GUSTS 100 KT
   DISSIPATING AS A SIGNIFICANT TROPICAL CYCLONE OVER LAND
   RADIUS OF 050 KT WINDS - 070 NM EAST SEMICIRCLE
                                   OVER WATER
                            060 NM ELSEWHERE OVER WATER
   RADIUS OF 035 KT WINDS - 160 NM EAST SEMICIRCLE
                                   OVER WATER
                            150 NM ELSEWHERE OVER WATER
   VECTOR TO 24 HR POSIT: 155 DEG/ 15 KTS
    ---
   24 HRS, VALID AT:
   230000Z5 --- 26.4S2 116.4E2
   MAX SUSTAINED WINDS - 030 KT, GUSTS 040 KT
   DISSIPATED AS A SIGNIFICANT TROPICAL CYCLONE OVER LAND
    ---
REMARKS:
220300Z7 POSITION NEAR 22.5S4  114.3E1.
TROPICAL CYCLONE 30S (VANCE) IS MOVING SOUTHWARD AT 15 KNOTS.
THE SYSTEM REMAINS VERY STRONG, WITH SATELLITE ANALYSIS
INDICATING 125 KNOT MAXIMUM SUSTAINED WINDS.  THE 50 AND 35 KNOT
WIND RADII HAVE BEEN CONFIRMED BY SYNOPTIC DATA FROM LEARMOUTH (WMO
94301 AND ONSLOW (WMO 94305).  THE SYSTEM HAS A 30NM DIAMTER EYE,
WHICH SHOULD PASS BETWEEN LEARMOUTH AND ONSLOW WITHIN THE NEXT
FEW HOURS.  TC 30S IS FORECAST TO DISSIPATE ASHORE WITHIN 24 HOURS.
MAXIMUM SIGNIFICANT WAVE HEIGHT AT 220000Z IS 28 FEET. NEXT
WARNINGS AT 220900Z3 (DTG 220757Z3), 221500Z0 (DTG 221357Z0) AND
222100Z7 (DTG 221957Z6).//
BT
#0001

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