MSGID/GENADMIN/JOINT TYPHOON WRNCEN PEARL HARBOR HI// SUBJ/TROPICAL CYCLONE WARNING// RMKS/ 1. TYPHOON 10W (MAYSAK) WARNING NR 024 02 ACTIVE TROPICAL CYCLONES IN NORTHWESTPAC MAX SUSTAINED WINDS BASED ON ONE-MINUTE AVERAGE WIND RADII VALID OVER OPEN WATER ONLY --- WARNING POSITION: 021800Z --- NEAR 35.5N 129.0E MOVEMENT PAST SIX HOURS - 020 DEGREES AT 26 KTS POSITION ACCURATE TO WITHIN 040 NM POSITION BASED ON CENTER LOCATED BY A COMBINATION OF SATELLITE, RADAR AND SYNOPTIC DATA PRESENT WIND DISTRIBUTION: MAX SUSTAINED WINDS - 075 KT, GUSTS 090 KT WIND RADII VALID OVER OPEN WATER ONLY BECOMING EXTRATROPICAL RADIUS OF 064 KT WINDS - 050 NM NORTHEAST QUADRANT 050 NM SOUTHEAST QUADRANT 040 NM SOUTHWEST QUADRANT 040 NM NORTHWEST QUADRANT RADIUS OF 050 KT WINDS - 100 NM NORTHEAST QUADRANT 095 NM SOUTHEAST QUADRANT 060 NM SOUTHWEST QUADRANT 060 NM NORTHWEST QUADRANT RADIUS OF 034 KT WINDS - 175 NM NORTHEAST QUADRANT 150 NM SOUTHEAST QUADRANT 135 NM SOUTHWEST QUADRANT 130 NM NORTHWEST QUADRANT REPEAT POSIT: 35.5N 129.0E --- FORECASTS: 12 HRS, VALID AT: 030600Z --- 41.2N 128.7E MAX SUSTAINED WINDS - 060 KT, GUSTS 075 KT WIND RADII VALID OVER OPEN WATER ONLY EXTRATROPICAL RADIUS OF 050 KT WINDS - 050 NM NORTHEAST QUADRANT 070 NM SOUTHEAST QUADRANT 050 NM SOUTHWEST QUADRANT 010 NM NORTHWEST QUADRANT RADIUS OF 034 KT WINDS - 150 NM NORTHEAST QUADRANT 240 NM SOUTHEAST QUADRANT 120 NM SOUTHWEST QUADRANT 080 NM NORTHWEST QUADRANT VECTOR TO 24 HR POSIT: 340 DEG/ 23 KTS --- 24 HRS, VALID AT: 031800Z --- 45.6N 126.5E MAX SUSTAINED WINDS - 045 KT, GUSTS 055 KT WIND RADII VALID OVER OPEN WATER ONLY EXTRATROPICAL --- REMARKS: 022100Z POSITION NEAR 36.9N 128.9E. 02SEP20. TYPHOON (TY) 10W (MAYSAK), LOCATED APPROXIMATELY 24 NM NORTH-NORTHWEST OF BUSAN, SOUTH KOREA, HAS TRACKED NORTH- NORTHEASTWARD AT 26 KNOTS OVER THE PAST SIX HOURS. ANIMATED ENHANCED INFRARED SATELLITE IMAGERY AND RADAR IMAGERY INDICATE TIGHTLY-CURVED BANDING WRAPPING INTO A DEFINED LOW-LEVEL CIRCULATION CENTER, WHICH SUPPORTS THE INITIAL POSITION WITH GOOD CONFIDENCE. A 021748Z AMSR2 89GHZ MICROWAVE IMAGE DEPICTS ERODING CORE CONVECTION WITH EXPANSIVE DEEP CONVECTION SHEARED TO THE NORTHWEST OVER THE KOREAN PENINSULA. TY 10W MADE LANDFALL AT 02/17Z ABOUT 12NM WEST OF BUSAN, WHICH REPORTED MAXIMUM SUSTAINED SURFACE WINDS OF 64 KNOTS WITH GUSTS AS HIGH AS 75 KNOTS. THESE WIND REPORTS SUPPORT THE INITIAL INTENSITY ESTIMATE OF 75 KNOTS, WHICH IS ALSO BOLSTERED BY THE RJTD DVORAK ESTIMATE OF T4.0/5.0 (65/90 KNOTS). TY 10W IS UNDERGOING EXTRA- TROPICAL TRANSITION (ETT) AND IS EMBEDDED WITHIN THE LEADING EDGE OF A DEEP MIDLATITUDE SHORTWAVE TROUGH. THE SYSTEM IS FORECAST TO WEAKEN RAPIDLY AND SHOULD COMPLETE ETT BY TAU 12 AS IT GAINS FRONTAL CHARACTERISTICS. NUMERICAL MODEL GUIDANCE IS IN GOOD AGREEMENT AND INDICATES A CYCLONICALLY SHAPED FORECAST TRACK AS THE SYSTEM OCCLUDES OVER MANCHURIA. THIS SYSTEM IS FORECAST TO DEEPEN AS A STORM-FORCE EXTRA-TROPICAL LOW OVER NORTH KOREA AND MANCHURIA. 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. REFER TO TYPHOON 11W (HAISHEN) WARNINGS (WTPN32 PGTW) FOR SIX-HOURLY UPDATES.// NNNN NNNN