WTPN31 PGTW 140300 MSGID/GENADMIN/JOINT TYPHOON WRNCEN PEARL HARBOR HI// SUBJ/TROPICAL DEPRESSION 28W (YAMANEKO) WARNING NR 007// RMKS/ 1. TROPICAL DEPRESSION 28W (YAMANEKO) WARNING NR 007 01 ACTIVE TROPICAL CYCLONE IN NORTHWESTPAC MAX SUSTAINED WINDS BASED ON ONE-MINUTE AVERAGE WIND RADII VALID OVER OPEN WATER ONLY --- WARNING POSITION: 140000Z --- NEAR 23.8N 165.6E MOVEMENT PAST SIX HOURS - 345 DEGREES AT 10 KTS POSITION ACCURATE TO WITHIN 040 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 SUBTROPICAL REPEAT POSIT: 23.8N 165.6E --- FORECASTS: 12 HRS, VALID AT: 141200Z --- 27.1N 166.2E MAX SUSTAINED WINDS - 030 KT, GUSTS 040 KT WIND RADII VALID OVER OPEN WATER ONLY BECOMING EXTRATROPICAL VECTOR TO 24 HR POSIT: 020 DEG/ 26 KTS --- 24 HRS, VALID AT: 150000Z --- 32.0N 168.3E MAX SUSTAINED WINDS - 035 KT, GUSTS 045 KT WIND RADII VALID OVER OPEN WATER ONLY EXTRATROPICAL RADIUS OF 034 KT WINDS - 380 NM NORTHEAST QUADRANT 200 NM SOUTHEAST QUADRANT 040 NM SOUTHWEST QUADRANT 240 NM NORTHWEST QUADRANT --- REMARKS: 140300Z POSITION NEAR 24.6N 165.7E. 14NOV22. TROPICAL DEPRESSION 28W (YAMANEKO), LOCATED APPROXIMATELY 276 NM NORTH OF WAKE ISLAND, HAS TRACKED NORTH- NORTHWESTWARD AT 10 KNOTS OVER THE PAST SIX HOURS. ANIMATED MULTISPECTRAL SATELLITE IMAGERY (MSI) CONTINUES TO SHOW THE WELL DEVELOPED BUT FULLY EXPOSED LOW LEVEL CIRCULATION CENTER (LLCC) THAT IS TD 28W. AUTOMATED AND MANUAL PHASE CLASSIFICATION WORKSHEETS INDICATE THE SYSTEM HAS TRANSITIONED TO A FULLY SUBTROPICAL DEPRESSION, HAVING CHARACTERISTICS OF BOTH A TROPICAL AND EXTRATROPICAL CYCLONE SUCH AS A MODERATE AMOUNT OF THERMAL ADVECTION, WARM SSTS, STRONG VERTICAL WIND SHEAR (VWS) AND ASSOCIATED WITH AN UPPER-LEVEL TROUGH. THE SYSTEM IS STARTING TO PICK UP SPEED AS IT HEADS NORTH ALONG THE SOUTHWESTERN SIDE OF AN AMPLIFYING RIDGE TO THE EAST. A STRONG UPPER-LEVEL TROUGH LIES JUST TO THE WEST WITH AN ASSOCIATED RAPIDLY DEVELOPING SURFACE LOW LYING NEAR 30N 160E. THE INITIAL POSITION IS ASSESSED WITH HIGH CONFIDENCE BASED ON THE EXPOSED LLCC. THE INITIAL INTENSITY IS ALSO ASSESSED WITH HIGH CONFIDENCE, IN LINE WITH THE BULK OF THE AGENCY FIXES, THE AIDT, DEEP MICRONET AND OPEN-AIIR ESTIMATES. WHILE 28W IS CURRENTLY ASSESSED AS SUBTROPICAL, THIS PHASE WILL BE SHORT LIVED AND THE SYSTEM WILL RAPIDLY TRANSITION TO AN EXTRATROPICAL CYCLONE AS IT COMES INTO PHASE WITH THE NEGATIVELY TILTED TROUGH MOVING IN FROM THE WEST, MOVES NORTH OF THE 26C ISOTHERM AND MOVES UNDER A STRONG 200MB JET MAX. THE SYSTEM IS EXPECTED TO INTENSIFY AS IT BECOMES EXTRATROPICAL DUE TO THE VERY STRONG BAROCLINIC FORCING AND RACES OFF TO THE NORTHEAST. 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 140000Z IS 14 FEET.// NNNN