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Date:         Fri, 20 Apr 2001 08:27:54 -0500
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Sender: WX-TROPL Tropical Storm and Hurricane WX products
<[email-masked]>
From: SIU Weather Processor <[email-masked]>
Subject:      Indian-S: 1. Tropical Cyclone 20s (alistair) Warning Nr 015
To: [email-masked]
Status:
X-Mozilla-Status: 8001
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WTXS31 PGTW 201500
1. TROPICAL CYCLONE 20S (ALISTAIR) WARNING NR 015
01 ACTIVE TROPICAL CYCLONE IN SOUTHERN HEMISPHERE
MAX SUSTAINED WINDS BASED ON ONE-MINUTE AVERAGE
---
WARNING POSITION:
201200Z5 --- NEAR 18.6S5 113.8E3
MOVEMENT PAST SIX HOURS - 260 DEGREES AT 10 KTS
POSITION ACCURATE TO WITHIN 060 NM
POSITION BASED ON CENTER LOCATED BY SATELLITE
PRESENT WIND DISTRIBUTION:
MAX SUSTAINED WINDS - 045 KT, GUSTS 055 KT
RADIUS OF 035 KT WINDS - 100 NM SOUTHEAST SEMICIRCLE
050 NM ELSEWHERE
REPEAT POSIT: 18.6S5 113.8E3
---
FORECASTS:
12 HRS, VALID AT:
210000Z3 --- 19.4S4 112.0E4
MAX SUSTAINED WINDS - 040 KT, GUSTS 050 KT
DISSIPATING AS A SIGNIFICANT TROPICAL CYCLONE OVER WATER
RADIUS OF 035 KT WINDS - 080 NM SOUTHEAST SEMICIRCLE
035 NM ELSEWHERE
VECTOR TO 24 HR POSIT: 225 DEG/ 10 KTS
---
24 HRS, VALID AT:
211200Z6 --- 20.7S9 110.5E7
MAX SUSTAINED WINDS - 035 KT, GUSTS 045 KT
DISSIPATING AS A SIGNIFICANT TROPICAL CYCLONE OVER WATER
VECTOR TO 36 HR POSIT: 205 DEG/ 07 KTS
---
36 HRS, VALID AT:
220000Z4 --- 21.9S2 109.9E9
MAX SUSTAINED WINDS - 030 KT, GUSTS 040 KT
DISSIPATING AS A SIGNIFICANT TROPICAL CYCLONE OVER WATER
VECTOR TO 48 HR POSIT: 180 DEG/ 08 KTS
---
EXTENDED OUTLOOK:
48 HRS, VALID AT:
221200Z7 --- 23.5S0 109.9E9
MAX SUSTAINED WINDS - 030 KT, GUSTS 040 KT
DISSIPATED AS A SIGNIFICANT TROPICAL CYCLONE OVER WATER
---
REMARKS:
201500Z8 POSITION NEAR 18.8S7  113.3E8.
TROPICAL CYCLONE (TC) 20S (ALISTAIR), LOCATED APPROXIMATELY 215 NM
NORTH OF LEARMONTH, AUSTRALIA, HAS TRACKED WESTWARD AT 10 KNOTS OVER
THE PAST 6 HOURS. THE WARNING POSITION IS BASED ON 201130Z7 ENHANCED
INFRARED SATELLITE IMAGERY. THE WARNING INTENSITY IS BASED ON
CURRENT INTENSITY ESTIMATES OF 35 TO 55 KNOTS. ENHANCED INFRARED
ANIMATION DEPICTS THAT THE LOW-LEVEL CIRCULATION CENTER (LLCC) HAS
TUCKED BENEATH THE WESTERN EDGE OF THE CONVECTION DURING THE PAST 6
HOURS. A 200954Z0 TROPICAL RAINFALL MEASURING MISSION (TRMM 37 GHZ)
PASS DEPICTED A DEFINED LLCC WITH A BANDING FEATURE SITUATED OVER
THE SOUTHEAST QUADRANT. TC 20S IS FORECAST TO TRACK INCREASINGLY
SOUTHWESTWARD OVER THE NEXT 24 HOURS. AFTERWARD, THE SYSTEM SHOULD
BEGIN TO TRACK MORE SOUTHWARD WITH A WEAKNESS IN THE LOW/MID LEVEL
RIDGE. TC 20S IS FORECAST TO DISSIPATE BY THE END OF THE PERIOD.
MAXIMUM SIGNIFICANT WAVE HEIGHT AT 201200Z5 IS 12 FEET. NEXT
WARNINGS AT 202100Z5, 210300Z6, 210900Z2 AND 211500Z9 .//

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