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Menu of Text Products for the Hawaiian Islands and the Tropical Pacific/Atlantic Oceans:
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West Pacific Tropical Cyclone Discussion

530
WTPN31 PGTW 231500
MSGID/GENADMIN/JOINT TYPHOON WRNCEN PEARL HARBOR HI//
SUBJ/TROPICAL CYCLONE WARNING//
RMKS/
1. TROPICAL STORM 10W (MATMO) WARNING NR 025
DOWNGRADED FROM TYPHOON 10W
01 ACTIVE TROPICAL CYCLONE IN NORTHWESTPAC
MAX SUSTAINED WINDS BASED ON ONE-MINUTE AVERAGE
WIND RADII VALID OVER OPEN WATER ONLY
---
WARNING POSITION:
231200Z --- NEAR 25.8N 119.0E
MOVEMENT PAST SIX HOURS - 325 DEGREES AT 10 KTS
POSITION ACCURATE TO WITHIN 060 NM
POSITION BASED ON CENTER LOCATED BY SATELLITE
PRESENT WIND DISTRIBUTION:
MAX SUSTAINED WINDS - 050 KT, GUSTS 065 KT
WIND RADII VALID OVER OPEN WATER ONLY
DISSIPATING AS A SIGNIFICANT TROPICAL CYCLONE OVER LAND
REPEAT POSIT: 25.8N 119.0E
---
FORECASTS:
12 HRS, VALID AT:
240000Z --- 28.0N 118.5E
MAX SUSTAINED WINDS - 035 KT, GUSTS 045 KT
WIND RADII VALID OVER OPEN WATER ONLY
DISSIPATING AS A SIGNIFICANT TROPICAL CYCLONE OVER LAND
VECTOR TO 24 HR POSIT: 005 DEG/ 13 KTS
---
24 HRS, VALID AT:
241200Z --- 30.6N 118.8E
MAX SUSTAINED WINDS - 020 KT, GUSTS 030 KT
WIND RADII VALID OVER OPEN WATER ONLY
DISSIPATED AS A SIGNIFICANT TROPICAL CYCLONE OVER LAND
---
REMARKS:
231500Z POSITION NEAR 26.4N 118.9E.
TROPICAL STORM 10W (MATMO), LOCATED APPROXIMATELY 142 NM WEST-
NORTHWEST OF TAIPEI, TAIWAN, HAS TRACKED NORTHWESTWARD AT 10
KNOTS OVER THE PAST SIX HOURS. THE SYSTEM CONTINUES TO DEGENERATE AS
IT TRAVERSES NORTH IN EASTERN CHINA ALONG THE WESTERN PERIPHERY OF
THE SUBTROPICAL RIDGE OVER SITUATED OVER THE RYUKYU ISLAND CHAIN.
MATMO IS FORECAST TO CONTINUE TO WEAKEN DUE TO THE INFLUENCE OF
TOPOGRAPHICAL FRICTION AND THE MID-LATITUDE TROUGH APPROACHING FROM
THE NORTHWEST. COMPLETE DISSIPATION OF THE SYSTEM IS EXPECTED OVER
LAND, APPROXIMATELY 150NM WEST OF SHANGHAI IN THE NEXT 24 HOURS AS
IT IS ABSORBED IN THE MID-LATITUDE BOUNDARY CURRENTLY LOCATED NORTH
OF THE SYSTEM. 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.//

Bulletins, Forecasts and Observations are courtesy of Honolulu National Weather Service Forecast Office



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It was last modified on: Tue, Sep 21 2010 - 2314 UTC
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