Subject: Indian-S: 1. Tropical Cyclone 26s (donaline) Warning Nr 004

From: SIU Weather Processor <[email-masked]>
Date: Sat, 7 Mar 1998 21:26:37 -0600

475
WTXS31 PGTW 080300
IMMEDIATE DELIVERY REQ TO AMEMBASSY PORT LOUIS
1. TROPICAL CYCLONE 26S (DONALINE) WARNING NR 004
   01 ACTIVE TROPICAL CYCLONE IN SOUTHERN HEMISPHERE
   MAX SUSTAINED WINDS BASED ON ONE-MINUTE AVERAGE
    ---
   WARNING POSITION:
   080000Z8 --- 19.6S6 070.0E7

PAGE 02 RUHPSGG2976 UNCLAS
     MOVEMENT PAST SIX HOURS - 165 DEGREES AT 06 KTS
     POSITION ACCURATE TO WITHIN 060 NM
     POSITION BASED ON CENTER LOCATED BY SATELLITE
   PRESENT WIND DISTRIBUTION:
   MAX SUSTAINED WINDS - 055 KT, GUSTS 065 KT
   RADIUS OF 050 KT WINDS - 015 NM
   RADIUS OF 035 KT WINDS - 115 NM EAST SEMICIRCLE
                            085 NM ELSEWHERE
   REPEAT POSIT: 19.6S6 070.0E7
    ---
   FORECASTS:
   12 HRS, VALID AT:
   081200Z1 --- 21.0S3 070.3E0
   MAX SUSTAINED WINDS - 060 KT, GUSTS 070 KT
   RADIUS OF 050 KT WINDS - 020 NM
   RADIUS OF 035 KT WINDS - 115 NM EAST SEMICIRCLE
                            090 NM ELSEWHERE
   VECTOR TO 24 HR POSIT: 170 DEG/ 07 KTS
    ---
   24 HRS, VALID AT:

PAGE 03 RUHPSGG2976 UNCLAS
   090000Z9 --- 22.4S8 070.6E3
   MAX SUSTAINED WINDS - 065 KT, GUSTS 075 KT
   RADIUS OF 050 KT WINDS - 025 NM EAST SEMICIRCLE
                            015 NM ELSEWHERE
   RADIUS OF 035 KT WINDS - 120 NM EAST SEMICIRCLE
                            095 NM ELSEWHERE
   VECTOR TO 36 HR POSIT: 170 DEG/ 07 KTS
    ---
   36 HRS, VALID AT:
   091200Z2 --- 23.8S3 070.9E6
   MAX SUSTAINED WINDS - 070 KT, GUSTS 080 KT
   RADIUS OF 050 KT WINDS - 030 NM EAST SEMICIRCLE
                            020 NM ELSEWHERE
   RADIUS OF 035 KT WINDS - 125 NM EAST SEMICIRCLE
                            100 NM ELSEWHERE
   VECTOR TO 48 HR POSIT: 160 DEG/ 07 KTS
    ---
   EXTENDED OUTLOOK:
   48 HRS, VALID AT:
   100000Z1 --- 25.2S9 071.4E2

PAGE 04 RUHPSGG2976 UNCLAS
   MAX SUSTAINED WINDS - 060 KT, GUSTS 070 KT
   RADIUS OF 050 KT WINDS - 020 NM
   RADIUS OF 035 KT WINDS - 115 NM EAST SEMICIRCLE
                            090 NM ELSEWHERE
    ---
REMARKS:
080300Z POSITION: 20.0E2 070.1E8
TROPICAL CYCLONE 26S (DONALINE) IS MOVING SOUTH-SOUTHEASTWARD
AT 06 KNOTS. THE WARNING POSITION AND INTENSITY ARE BASED ON
072301Z3 INFRARED SATELLITE IMAGERY. POSITION CONFIDENCE IS LOW
DUE TO INCOMPLETE SATELLITE COVERAGE OF THIS AREA. ANIMATED
INFRARED SATELLITE IMAGERY INDICATES TROPICAL CYCLONE 26S
(DONALINE) HAS INTENSIFIED SLOWLY OVER THE PAST 09 HOURS. THIS
SYSTEM IS FORECAST TO CONTINUE MOVING SOUTH-SOUTHEASTWARD
THROUGH THE FORECAST PERIOD. THE DOMINANT STEERING INFLUENCE
IS EXPECTED TO BE THE STRENGTHENING MID-LEVEL ANTICYCLONE TO
ITS NORTHEAST. TROPICAL CYCLONE 26S (DONALINE) IS ANTICIPATED
TO INTENSIFY SLOWLY THROUGH 36 HOURS THEN WEAKEN AS IT ENTERS
A REGION OF MODERATE VERTICAL WIND SHEAR. MAXIMUM SIGNIFICANT
WAVE HEIGHT AT 080000Z8 IS 15 FEET. NEXT WARNINGS AT 081500Z4

PAGE 05 RUHPSGG2976 UNCLAS
AND 090300Z2.//
BT
#2976

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