WTPN32 PGTW 112000 MSGID/GENADMIN/JOINT TYPHOON WRNCEN PEARL HARBOR HI// SUBJ/TROPICAL CYCLONE WARNING// RMKS/ 1. TROPICAL DEPRESSION 17W (SEVENTEEN) WARNING NR 004 02 ACTIVE TROPICAL CYCLONES IN NORTHWESTPAC MAX SUSTAINED WINDS BASED ON ONE-MINUTE AVERAGE WIND RADII VALID OVER OPEN WATER ONLY --- WARNING POSITION: 111800Z --- NEAR 38.1N 160.4E MOVEMENT PAST SIX HOURS - 070 DEGREES AT 24 KTS POSITION ACCURATE TO WITHIN 030 NM POSITION BASED ON CENTER LOCATED BY SATELLITE PRESENT WIND DISTRIBUTION: MAX SUSTAINED WINDS - 030 KT, GUSTS 040 KT WIND RADII VALID OVER OPEN WATER ONLY BECOMING EXTRATROPICAL REPEAT POSIT: 38.1N 160.4E --- FORECASTS: 12 HRS, VALID AT: 120600Z --- 40.3N 167.6E MAX SUSTAINED WINDS - 030 KT, GUSTS 040 KT WIND RADII VALID OVER OPEN WATER ONLY EXTRATROPICAL VECTOR TO 24 HR POSIT: 075 DEG/ 31 KTS --- 24 HRS, VALID AT: 121800Z --- 41.4N 175.7E MAX SUSTAINED WINDS - 030 KT, GUSTS 040 KT WIND RADII VALID OVER OPEN WATER ONLY EXTRATROPICAL --- REMARKS: 112100Z POSITION NEAR 38.7N 162.2E. TROPICAL DEPRESSION (TD) 17W (SEVENTEEN), LOCATED APPROXIMATELY 896 NM NORTH-NORTHEAST OF MINAMI TORI SHIMA, HAS TRACKED EAST- NORTHEASTWARD AT 24 KNOTS OVER THE PAST SIX HOURS. ANIMATED ENHANCED INFRARED SATELLITE IMAGERY INDICATES RAPIDLY DECAYING DEEP CONVECTION DUE TO INCREASING WESTERLY VERTICAL WIND SHEAR ASSOCIATED WITH THE MIDLATITUDE WESTERLIES. A 111650Z AMSU 89GHZ IMAGE SHOWS A DEFINED LOW-LEVEL CIRCULATION CENTER WITH ISOLATED DEEP CONVECTION. TD 17W IS ACCELERATING WITHIN THE WESTERLY FLOW ALONG THE NORTHERN PERIPHERY OF THE SUBTROPICAL RIDGE AND IS INTERACTING WITH THE BAROCLINIC ZONE THUS BEGINNING EXTRATROPICAL TRANSITION (ETT). TD 16W IS FORECAST TO COMPLETE ETT BY TAU 12 AS IT GAINS FRONTAL CHARACTERISTICS. 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 111800Z IS 15 FEET. REFER TO TYPHOON 16W (MERANTI) WARNINGS (WTPN31 PGTW) FOR SIX-HOURLY UPDATES.//