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c789654|2011-9-30 22:48
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Final Warning
WTPN31 PGTW 301500
MSGID/GENADMIN/NAVMARFCSTCEN PEARL HARBOR HI/JTWC//
SUBJ/TROPICAL CYCLONE WARNING//
RMKS/
1. TROPICAL STORM 20W (NESAT) WARNING NR 029
02 ACTIVE TROPICAL CYCLONES IN NORTHWESTPAC
MAX SUSTAINED WINDS BASED ON ONE-MINUTE AVERAGE
WIND RADII VALID OVER OPEN WATER ONLY
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WARNING POSITION:
301200Z --- NEAR 21.4N 106.1E
MOVEMENT PAST SIX HOURS - 295 DEGREES AT 07 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
WIND RADII VALID OVER OPEN WATER ONLY
DISSIPATING AS A SIGNIFICANT TROPICAL CYCLONE OVER LAND
REPEAT POSIT: 21.4N 106.1E
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FORECASTS:
12 HRS, VALID AT:
010000Z --- 21.6N 105.3E
MAX SUSTAINED WINDS - 030 KT, GUSTS 040 KT
WIND RADII VALID OVER OPEN WATER ONLY
DISSIPATING AS A SIGNIFICANT TROPICAL CYCLONE OVER LAND
VECTOR TO 24 HR POSIT: 285 DEG/ 04 KTS
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24 HRS, VALID AT:
011200Z --- 21.8N 104.4E
MAX SUSTAINED WINDS - 020 KT, GUSTS 030 KT
WIND RADII VALID OVER OPEN WATER ONLY
DISSIPATED AS A SIGNIFICANT TROPICAL CYCLONE OVER LAND
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REMARKS:
301500Z POSITION NEAR 21.5N 105.9E.
TROPICAL STORM (TS) 20W (NESAT), LOCATED APPROXIMATELY 25 NM NORTH-
NORTHEAST OF HANOI, VIETNAM, HAS TRACKED WEST-NORTHWESTWARD AT 07
KNOTS OVER THE PAST SIX HOURS. ANIMATED INFRARED SATELLITE IMAGERY
DEPICTS RAPIDLY DECAYING DEEP CONVECTION DUE TO LAND INTERACTION.
HOWEVER, A 301048Z SSMIS IMAGE CONTINUES TO DEPICT A WELL-DEFINED,
BUT SHALLOW LOW-LEVEL CIRCULATION CENTER (LLCC). THE CURRENT
POSITION IS BASED ON THE SSMIS IMAGE WITH FAIR CONFIDENCE. THE
CURRENT INTENSITY IS ASSESSED AT 45 KNOTS. SUSTAINED SURFACE WINDS
REPORTED AT HANOI ARE ONLY 10-15 KNOTS WITH SLP NEAR 1004 MB. TS 20W
IS FORECAST TO CONTINUE TRACKING WEST-NORTHWESTWARD AND SHOULD
DISSIPATE BETWEEN TAU 12 AND TAU 24. THIS TRACK IS SUPPORTED BY THE
DYNAMIC MODEL GUIDANCE. THIS IS THE FINAL WARNING ON THIS SYSTEM BY
THE JOINT TYPHOON WARNING CENTER (NAVMARFCSTCEN). THE SYSTEM WILL BE
CLOSELY MONITORED FOR SIGNS OF REGENERATION. REFER TO TYPHOON 22W
(NALGAE) WARNINGS (WTPN33 PGTW) FOR SIX-HOURLY UPDATES.//
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