WTXS31 PGTW 221500
MSGID/GENADMIN/JOINT TYPHOON WRNCEN PEARL HARBOR HI//
SUBJ/TROPICAL CYCLONE 31P (THIRTYONE) WARNING NR 018A AMENDED//
RMKS/
1. TROPICAL CYCLONE 31P (THIRTYONE) WARNING NR 018A AMENDED
   01 ACTIVE TROPICAL CYCLONE IN SOUTHIO
   MAX SUSTAINED WINDS BASED ON ONE-MINUTE AVERAGE
   WIND RADII VALID OVER OPEN WATER ONLY
    ---
   WARNING POSITION:
   221200Z --- NEAR 10.0S 133.2E
     MOVEMENT PAST SIX HOURS - 290 DEGREES AT 08 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
   WIND RADII VALID OVER OPEN WATER ONLY
   DISSIPATED AS A SIGNIFICANT TROPICAL CYCLONE OVER WATER
   REPEAT POSIT: 10.0S 133.2E
    ---
   FORECASTS:
   12 HRS, VALID AT:
   230000Z --- 9.3S 131.9E
   MAX SUSTAINED WINDS - 030 KT, GUSTS 040 KT
   WIND RADII VALID OVER OPEN WATER ONLY
   DISSIPATED AS A SIGNIFICANT TROPICAL CYCLONE OVER WATER
    ---
REMARKS:
221500Z POSITION NEAR 9.8S 132.9E.
22APR25. TROPICAL CYCLONE 31P (THIRTYONE), LOCATED APPROXIMATELY
202 NM NORTHEAST OF DARWIN, AUSTRALIA, HAS TRACKED WEST-
NORTHWESTWARD AT 08 KNOTS OVER THE PAST SIX HOURS. AFTER RELEASE OF
THE ORIGINAL WARNING NUMBER EIGHTEEN (WR 018), FURTHER SATELLITE
ANALYSIS REVEALED SIGNIFICANTLY DECAYED CONVECTIVE STRUCTURE OF THE
SYSTEM, WITH SURFACE WINDS BELOW WARNING THRESHOLD. THE PGTW DVORAK
ESTIMATE IS NOW 1.5 AND MAJORITY OF THE DETERMINISTIC AND ENSEMBLE
GUIDANCE AGREES ON FURTHER DECAY OF TC 31P. THIS IS THE FINAL
WARNING ON THIS SYSTEM BY THE JOINT TYPHOON WRNCEN PEARL HARBOR HI.
THE SYSTEM WILL BE CLOSELY MONITORED FOR SIGNS OF REGENERATION.
MINIMUM CENTRAL PRESSURE AT 221200Z IS 1007 MB. MAXIMUM SIGNIFICANT
WAVE HEIGHT AT 221200Z IS 18 FEET.
2. JUSTIFICATION FOR AMENDMENT: FORECAST TRUNCATED TO 12 HOURS AND
SYSTEM FINAL WARNED BASED ON 221230Z METOP-B ASCAT PASS AND THE
ANIMATED SHORTWAVE INFRARED IMAGERY.//
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