WTPN32 PGTW 092100 MSGID/GENADMIN/JOINT TYPHOON WRNCEN PEARL HARBOR HI// SUBJ/TYPHOON 28W (HALONG) WARNING NR 022// RMKS/ 1. TYPHOON 28W (HALONG) WARNING NR 022 02 ACTIVE TROPICAL CYCLONES IN NORTHWESTPAC MAX SUSTAINED WINDS BASED ON ONE-MINUTE AVERAGE WIND RADII VALID OVER OPEN WATER ONLY --- WARNING POSITION: 091800Z --- NEAR 34.1N 149.9E MOVEMENT PAST SIX HOURS - 085 DEGREES AT 27 KTS POSITION ACCURATE TO WITHIN 045 NM POSITION BASED ON CENTER LOCATED BY SATELLITE PRESENT WIND DISTRIBUTION: MAX SUSTAINED WINDS - 070 KT, GUSTS 085 KT WIND RADII VALID OVER OPEN WATER ONLY BECOMING EXTRATROPICAL RADIUS OF 064 KT WINDS - 030 NM NORTHEAST QUADRANT 040 NM SOUTHEAST QUADRANT 045 NM SOUTHWEST QUADRANT 035 NM NORTHWEST QUADRANT RADIUS OF 050 KT WINDS - 060 NM NORTHEAST QUADRANT 080 NM SOUTHEAST QUADRANT 080 NM SOUTHWEST QUADRANT 070 NM NORTHWEST QUADRANT RADIUS OF 034 KT WINDS - 120 NM NORTHEAST QUADRANT 145 NM SOUTHEAST QUADRANT 150 NM SOUTHWEST QUADRANT 130 NM NORTHWEST QUADRANT REPEAT POSIT: 34.1N 149.9E --- FORECASTS: 12 HRS, VALID AT: 100600Z --- 34.6N 157.6E MAX SUSTAINED WINDS - 065 KT, GUSTS 080 KT WIND RADII VALID OVER OPEN WATER ONLY EXTRATROPICAL RADIUS OF 064 KT WINDS - 000 NM NORTHEAST QUADRANT 020 NM SOUTHEAST QUADRANT 020 NM SOUTHWEST QUADRANT 010 NM NORTHWEST QUADRANT RADIUS OF 050 KT WINDS - 040 NM NORTHEAST QUADRANT 090 NM SOUTHEAST QUADRANT 080 NM SOUTHWEST QUADRANT 070 NM NORTHWEST QUADRANT RADIUS OF 034 KT WINDS - 140 NM NORTHEAST QUADRANT 170 NM SOUTHEAST QUADRANT 190 NM SOUTHWEST QUADRANT 190 NM NORTHWEST QUADRANT VECTOR TO 24 HR POSIT: 075 DEG/ 35 KTS --- 24 HRS, VALID AT: 101800Z --- 36.1N 166.1E MAX SUSTAINED WINDS - 060 KT, GUSTS 075 KT WIND RADII VALID OVER OPEN WATER ONLY EXTRATROPICAL RADIUS OF 050 KT WINDS - 040 NM NORTHEAST QUADRANT 080 NM SOUTHEAST QUADRANT 070 NM SOUTHWEST QUADRANT 065 NM NORTHWEST QUADRANT RADIUS OF 034 KT WINDS - 150 NM NORTHEAST QUADRANT 200 NM SOUTHEAST QUADRANT 200 NM SOUTHWEST QUADRANT 170 NM NORTHWEST QUADRANT --- REMARKS: 092100Z POSITION NEAR 34.2N 151.8E. 09OCT25. TYPHOON 28W (HALONG), LOCATED APPROXIMATELY 508 NM EAST OF YOKOSUKA, JAPAN, HAS TRACKED EASTWARD AT 27 KNOTS OVER THE PAST SIX HOURS. ANIMATED ENHANCED INFRARED SATELLITE IMAGERY INDICATES THAT THE LOW-LEVEL CIRCULATION CENTER IS RAPIDLY DECOUPLING FROM THE UPPER-LEVEL CIRCULATION CENTER DUE TO STRONG (40-45 KNOTS) WESTERLY VERTICAL WIND SHEAR. EIR SATELLITE IMAGERY ALSO SHOWS EXTENSIVE COLD AIR STRATOCUMULUS AND DRY AIR ADVECTING OVER THE WESTERN SEMICIRCLE WITH A WEAK FRONTAL STRUCTURE. TYPHOON (TY) 28W IS CLEARLY UNDERGOING EXTRA-TROPICAL TRANSITION (ETT) AND IS ACCELERATING EASTWARD WITHIN THE MIDLATITUDE WESTERLIES. THE SYSTEM IS EXPECTED TO CONTINUE TRACKING EASTWARD TO EAST-NORTHEASTWARD THROUGH TAU 24 QUICKLY GAINING FRONTAL CHARACTERISTICS. TY 28W WILL COMPLETE ETT BY TAU 12 WITH AN INTENSITY RANGING FROM 60-65 KNOTS FROM TAU 12 TO TAU 24. 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. MINIMUM CENTRAL PRESSURE AT 091800Z IS 980 MB. MAXIMUM SIGNIFICANT WAVE HEIGHT AT 091800Z IS 38 FEET. REFER TO TROPICAL STORM 29W (NAKRI) WARNINGS (WTPN31 PGTW) FOR SIX-HOURLY UPDATES.// NNNN