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

From: SIU Weather Processor <[email-masked]>
Date: Fri, 13 Feb 1998 20:17:05 -0600

854
WTXS31 PGTW 140300
1. TROPICAL CYCLONE 20S (ANACELLE) WARNING NR 017
   02 ACTIVE TROPICAL CYCLONES IN SOUTHERN HEMISPHERE
   MAX SUSTAINED WINDS BASED ON ONE-MINUTE AVERAGE
    ---
   WARNING POSITION:
   140000Z5 --- 35.3S1 072.7E6
     MOVEMENT PAST SIX HOURS - 135 DEGREES AT 38 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
   BECOMING EXTRATROPICAL
   RADIUS OF 035 KT WINDS - 170 NM NORTHEAST SEMICIRCLE
                            095 NM ELSEWHERE
   REPEAT POSIT: 35.3S1 072.7E6
    ---
   FORECASTS:
   12 HRS, VALID AT:
   141200Z8 --- 40.6S0 078.5E0
   MAX SUSTAINED WINDS - 045 KT, GUSTS 055 KT
   BECOMING EXTRATROPICAL
   RADIUS OF 035 KT WINDS - 165 NM NORTHEAST SEMICIRCLE
                            050 NM ELSEWHERE
   VECTOR TO 24 HR POSIT: 135 DEG/ 36 KTS
    ---
   24 HRS, VALID AT:
   150000Z6 --- 45.4S3 085.9E2
   MAX SUSTAINED WINDS - 045 KT, GUSTS 055 KT
   EXTRATROPICAL
   VECTOR TO 36 HR POSIT: 115 DEG/ 40 KTS
    ---
   36 HRS, VALID AT:
   151200Z9 --- 48.5S7 096.8E3
   MAX SUSTAINED WINDS - 045 KT, GUSTS 055 KT
   EXTRATROPICAL
    ---
REMARKS:
140300Z8 POSITION 36.6S5  074.2E3
TROPICAL CYCLONE 20S (ANACELLE) IS ACCELERATING TOWARD THE
SOUTHEAST AT 38 KNOTS. WARNING POSITION AND INTENSITY ARE BASED
ON 130123Z0 VISIBLE, INFRARED AND MICROWAVE SATELLITE IMAGERY.
THIS SYSTEM IS EXPERIENCING STRONG VERTICAL WIND SHEAR AS IT
ENTERS THE MID-LATITUDE WESTERLIES. THE LOW-LEVEL CIRCULATION
CENTER IS PARTIALLY EXPOSED AND THE NEAREST DEEP CONVECTION IS
APPROXIMATELY 99 NM TO THE WEST-NORTHWEST. THIS SYSTEM IS
FORECAST TO CONTINUE MOVING RAPIDLY TOWARD THE EAST-SOUTHEAST
AND SLOWLY WEAKEN AS IT CONTINUES AND COMPLETES EXTRATROPICAL
TRANSITION BY 24 HOURS. MAXIMUM SIGNIFICANT WAVE HEIGHT AT
140000Z5 IS 23 FEET. NEXT WARNINGS AT 141500Z1 (DTG 141351Z5)
AND 150300Z9 (DTG 150151Z3). REFER TO TROPICAL CYCLONE  22S
(VICTOR) WARNINGS (WTXS33 PGTW) FOR SIX-HOURLY UPDATES.//

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