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West Pacific Tropical Cyclone Discussion

605
WTPN31 PGTW 280300
MSGID/GENADMIN/JOINT TYPHOON WRNCEN PEARL HARBOR HI//
SUBJ/TROPICAL CYCLONE WARNING//
RMKS/
1. TROPICAL DEPRESSION 30W (NOCK-TEN) WARNING NR 028
01 ACTIVE TROPICAL CYCLONE IN NORTHWESTPAC
MAX SUSTAINED WINDS BASED ON ONE-MINUTE AVERAGE
WIND RADII VALID OVER OPEN WATER ONLY
---
WARNING POSITION:
280000Z --- NEAR 12.9N 113.3E
MOVEMENT PAST SIX HOURS - 250 DEGREES AT 15 KTS
POSITION ACCURATE TO WITHIN 015 NM
POSITION BASED ON CENTER LOCATED BY SATELLITE
PRESENT WIND DISTRIBUTION:
MAX SUSTAINED WINDS - 025 KT, GUSTS 035 KT
WIND RADII VALID OVER OPEN WATER ONLY
DISSIPATING AS A SIGNIFICANT TROPICAL CYCLONE OVER WATER
REPEAT POSIT: 12.9N 113.3E
---
FORECASTS:
12 HRS, VALID AT:
281200Z --- 11.5N 111.4E
MAX SUSTAINED WINDS - 020 KT, GUSTS 030 KT
WIND RADII VALID OVER OPEN WATER ONLY
DISSIPATED AS A SIGNIFICANT TROPICAL CYCLONE OVER WATER
VECTOR TO 24 HR POSIT: 230 DEG/ 12 KTS
---
24 HRS, VALID AT:
290000Z --- 9.9N 109.6E
MAX SUSTAINED WINDS - 020 KT, GUSTS 030 KT
WIND RADII VALID OVER OPEN WATER ONLY
DISSIPATED AS A SIGNIFICANT TROPICAL CYCLONE OVER WATER
---
REMARKS:
280300Z POSITION NEAR 12.6N 112.8E.
TROPICAL DEPRESSION (TD) 30W (NOCK-TEN), LOCATED APPROXIMATELY 407 NM
EAST-NORTHEAST OF HO CHI MINH CITY, VIETNAM, HAS TRACKED WEST-
SOUTHWESTWARD AT 15 KNOTS OVER THE PAST SIX HOURS. ANIMATED
MULTISPECTRAL SATELLITE IMAGERY AND A 272338Z SSMIS 91GHZ MICROWAVE
IMAGE DEPICT A FULLY EXPOSED LOW LEVEL CIRCULATION CENTER (LLCC)
WITH NO ASSOCIATED CONVECTION REMAINING. THE REMNANTS OF TD NOCK-TEN
WILL CONTINUE TO MOVE SOUTHWESTWARD EMBEDDED WITHIN THE NORTHEAST
MONSOON FLOW. EXPECT WINDS ASSOCIATED WITH THE COLD SURGE OVER THE
SOUTH CHINA SEA TO REMAIN STRONG (25-35 KNOTS), ALTHOUGH NOT
ASSOCIATED WITH THE REMNANTS OF TD 30W. HIGH VERTICAL WIND SHEAR AND
COOL, DRY AIR ASSOCIATED WITH THE COLD SURGE WILL PREVENT ANY RE-
INTENSIFICATION. 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. MAXIMUM SIGNIFICANT WAVE HEIGHT
AT 280000Z IS 18 FEET.//

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