Subject: Indian-N: 01 Active Tropical Cyclone In Northio

From: SIU Weather Processor <[email-masked]>
Date: Wed, 30 Sep 1998 23:24:33 -0500

327
WTIO31 PGTW 010300
1. TROPICAL CYCLONE 04A WARNING NR 003
   01 ACTIVE TROPICAL CYCLONE IN NORTHIO
   MAX SUSTAINED WINDS BASED ON ONE-MINUTE AVERAGE
    ---
   WARNING POSITION:

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   010000Z1 --- 17.7N5 063.2E1
     MOVEMENT PAST SIX HOURS - 240 DEGREES AT 04 KTS
     POSITION ACCURATE TO WITHIN 060 NM
     POSITION BASED ON CENTER LOCATED BY SATELLITE
   PRESENT WIND DISTRIBUTION:
   MAX SUSTAINED WINDS - 030 KT, GUSTS 040 KT
   REPEAT POSIT: 17.7N5 63.2E1
    ---
   FORECASTS:
   12 HRS, VALID AT:
   011200Z4 --- 17.4N2 062.4E2
   MAX SUSTAINED WINDS - 025 KT, GUSTS 035 KT
   DISSIPATING AS A SIGNIFICANT TROPICAL CYCLONE OVER WATER
   VECTOR TO 24 HR POSIT: 265 DEG/ 04 KTS
    ---
   24 HRS, VALID AT:
   020000Z2 --- 17.3N1 061.5E2
   MAX SUSTAINED WINDS - 025 KT, GUSTS 035 KT
   DISSIPATED AS A SIGNIFICANT TROPICAL CYCLONE OVER WATER
    ---

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REMARKS:
010300Z4 POSITION 17.6N4 063.0E9.
TROPICAL CYCLONE 04A HAS BEEN TRACKING WEST-SOUTHWESTWARD AT
4 KNOTS OVER THE PAST 6 HOURS. THE WARNING POSITION IS BASED
ON ANIMATED INFRARED IMAGERY AND EXTRAPOLATION FROM 302001Z6
INFRARED SATELLITE IMAGERY AND A 301701Z2 MICROWAVE IMAGER PASS.
THE WARNING INTENSITY IS BASED ON 302001Z6 SATELLITE INTENSITY
ESTIMATE OF 25 KNOTS AND CONTINUITY WITH PREVIOUS FORECAST.
TROPICAL CYCLONE 04A HAS BEEN MOVING SLOWLY WEST-SOUTHWESTWARD
OVER THE PAST 6 HOURS UNDER THE STEERING FLOW FROM THE RIDGE
TO ITS NORTH. THE 301701Z2 MICROWAVE IMAGER PASS SHOWS THAT
TROPICAL CYCLONE 04A CONTINUES TO HAVE AN EXPOSED LOW-LEVEL
AND ITS MAIN CONVECTION IS SHEARED TO THE EAST. THE SYSTEM IS
FORECAST TO CONTINUE MOVING INTO AN AREA OF STRONG VERTICAL
WIND SHEAR AND SHOULD CONTINUE TO WEAKEN AND DISSIPATE OVER
WATER BY THE 24-HOUR FORECAST POSITION. MAXIMUM SIGNIFICANT WAVE
HEIGHT AT 010000Z1 IS 10 FEET. REFER TO WWIO31 PGFW FOR ADDITIONAL
SEA HEIGHT INFORMATION. THIS IS THE FINAL WARNING ON THIS SYSTEM
BY THE JOINT TYPHOON WARNING CENTER (NAVPACMETOCCEN WEST GU).
THE SYSTEM WILL BE CLOSELY MONITORED FOR SIGNS OF REGENERATION.//

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