WTPN31 PGTW 270900 MSGID/GENADMIN/JOINT TYPHOON WRNCEN PEARL HARBOR HI// SUBJ/TROPICAL STORM 06W (CHAMPI) WARNING NR 026// RMKS/ 1. TROPICAL STORM 06W (CHAMPI) WARNING NR 026 01 ACTIVE TROPICAL CYCLONE IN NORTHWESTPAC MAX SUSTAINED WINDS BASED ON ONE-MINUTE AVERAGE WIND RADII VALID OVER OPEN WATER ONLY --- WARNING POSITION: 270600Z --- NEAR 31.9N 142.5E MOVEMENT PAST SIX HOURS - 025 DEGREES AT 22 KTS POSITION ACCURATE TO WITHIN 015 NM POSITION BASED ON CENTER LOCATED BY SATELLITE PRESENT WIND DISTRIBUTION: MAX SUSTAINED WINDS - 035 KT, GUSTS 045 KT WIND RADII VALID OVER OPEN WATER ONLY BECOMING EXTRATROPICAL RADIUS OF 034 KT WINDS - 060 NM NORTHEAST QUADRANT 055 NM SOUTHEAST QUADRANT 030 NM SOUTHWEST QUADRANT 030 NM NORTHWEST QUADRANT REPEAT POSIT: 31.9N 142.5E --- FORECASTS: 12 HRS, VALID AT: 271800Z --- 36.2N 146.3E MAX SUSTAINED WINDS - 035 KT, GUSTS 045 KT WIND RADII VALID OVER OPEN WATER ONLY EXTRATROPICAL RADIUS OF 034 KT WINDS - 060 NM NORTHEAST QUADRANT 110 NM SOUTHEAST QUADRANT 060 NM SOUTHWEST QUADRANT 010 NM NORTHWEST QUADRANT VECTOR TO 24 HR POSIT: 050 DEG/ 30 KTS --- 24 HRS, VALID AT: 280600Z --- 39.8N 152.3E MAX SUSTAINED WINDS - 035 KT, GUSTS 045 KT WIND RADII VALID OVER OPEN WATER ONLY EXTRATROPICAL RADIUS OF 034 KT WINDS - 090 NM NORTHEAST QUADRANT 150 NM SOUTHEAST QUADRANT 120 NM SOUTHWEST QUADRANT 040 NM NORTHWEST QUADRANT --- REMARKS: 270900Z POSITION NEAR 33.0N 143.5E. 27JUN21. TROPICAL STORM 06W (CHAMPI), LOCATED APPROXIMATELY 247 NM SOUTHEAST OF YOKOSUKA, JAPAN, HAS TRACKED NORTH-NORTHEASTWARD AT 22 KNOTS OVER THE PAST SIX HOURS. ANIMATED MULTISPECTRAL SATELLITE IMAGERY (MSI) SHOWS THE SYSTEM HAS ELONGATED WITH THE MAIN CONVECTION COLLAPSED AND SHEARED NORTHEASTWARD, PARTLY EXPOSING THE LOW LEVEL CIRCULATION (LLC). THE INITIAL POSITION IS PLACED WITH HIGH CONFIDENCE BASED ON MSI LOW CLOUD TRACING INTO THE LLC. THE INITIAL INTENSITY OF 35 KTS IS ASSESSED WITH HIGH CONFIDENCE BASED ON OVERALL ASSESSMENT OF AGENCY AND AUTOMATED DVORAK FIXES RANGING FROM 30KTS TO 45KTS. ENVIRONMENTAL ANALYSIS INDICATES TS CHAMPI HAS ENTERED THE BAROCLINIC ZONE WHERE SSTS HAVE DROPPED TO 23-24C AND VWS ARE >30KTS. TS 06W WILL CONTINUE TO ACCELERATE NORTHEASTWARD ON THE POLEWARD SIDE OF THE STEERING STR TO THE SOUTHEAST. THE SYSTEM HAS BEGUN EXTRA-TROPICAL TRANSITION AND BY TAU 12 WILL TRANSFORM INTO A GALE-FORCE COLD CORE LOW WITH AN EXPANSIVE WIND FIELD. 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 270600Z IS 14 FEET.// NNNN