1. TYPHOON 12W (KROVANH) WARNING NR 031
01 ACTIVE TROPICAL CYCLONE IN NORTHWESTPAC
MAX SUSTAINED WINDS BASED ON ONE-MINUTE AVERAGE
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WARNING POSITION:
231800Z4 --- NEAR 18.1N0 115.9E6
MOVEMENT PAST SIX HOURS - 290 DEGREES AT 09 KTS
POSITION ACCURATE TO WITHIN 060 NM
POSITION BASED ON CENTER LOCATED BY SATELLITE
PRESENT WIND DISTRIBUTION:
MAX SUSTAINED WINDS - 070 KT, GUSTS 085 KT
RADIUS OF 050 KT WINDS - 045 NM NORTHEAST QUADRANT
040 NM SOUTHEAST QUADRANT
040 NM SOUTHWEST QUADRANT
045 NM NORTHWEST QUADRANT
RADIUS OF 034 KT WINDS - 095 NM NORTHEAST QUADRANT
080 NM SOUTHEAST QUADRANT
080 NM SOUTHWEST QUADRANT
100 NM NORTHWEST QUADRANT
REPEAT POSIT: 18.1N0 115.9E6
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232100Z8 POSITION NEAR 18.3N2 115.4E1.
TYPHOON (TY) 12W (KROVANH), LOCATED APPROXIMATELY 280 NM SOUTH-SOUTHEAST OF HONG KONG, CHINA HAS TRACKED WEST-WESTWARD AT 09 KNOTS OVER THE PAST 06 HOURS. THE WARNING POSITION IS BASED ON 231730Z6 ENHANCED INFRARED SATELLITE IMAGERY. THE WARNING INTENSITY IS BASED ON SATELLITE CURRENT INTENSITY ESTIMATES OF 55 AND 65 KNOTS. RECENT MICROWAVE AND ANIMATED ENHANCED INFRARED SATELLITE IMAGERY REVEAL THAT THE DEEP CONVECTION AND ORGANIZATION CONTINUE TO SLOWLY IMPROVE ON TY 12W. TIGHTLY CURVED BANDING FEATURES ARE AGAIN APPARENT IN THE SATELLITE IMAGERY. MAXIMUM SIGNIFICANT WAVE
HEIGHT AT 231800Z4 IS 24 FEET. REFER TO WWPW31 RJTX FOR ADDITIONAL SEA HEIGHT INFORMATION. NEXT WARNINGS AT 240300Z9, 240900Z5, 241500Z2 AND 242100Z9.//
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