242100Z POSITION NEAR 42.6N 135.8E. TROPICAL STORM 22W (SOULIK), LOCATED APPROXIMATELY 317 NM WEST- NORTHWEST OF MISAWA, JAPAN, HAS TRACKED NORTHEASTWARD AT 30 KNOTS OVER THE PAST SIX HOURS. ANIMATED ENHANCED INFRARED SATELLITE IMAGERY DEPICTS A RAPIDLY DETERIORATING SYSTEM WITH DISTINCT EXTRATROPICAL FEATURES, SUCH AS A DECOUPLED AND EXPOSED LLCC, COMMA-SHAPED ASYMMETRIC UPPER-LEVEL CLOUD SHIELD AND EXPANDING WIND FIELD. THE INITIAL POSITION IS PLACED WITH HIGH CONFIDENCE BASED ON THE EXPOSED LLCC EVIDENT IN THE EIR IMAGERY. THE INITIAL INTENSITY IS ASSESSED AT 35 KNOTS BASED ON A SUBTROPICAL FIX INTENSITY OF T1.5 (30-35 KNOTS) AND AN AUTOMATED INTENSITY ESTIMATE OF T2.0 (35 KNOTS). THE SYSTEM IS TRACKING THROUGH AN ENVIRONMENT HOSTILE TO THE WARM-CORE TROPICAL STRUCTURE, WITH HIGH VWS, LOW SSTS (25 DEG C). THE SYSTEM IS RAPIDLY TRANSITING TO THE NORTHEAST ALONG THE NORTHWESTERN PERIPHERY OF A DEEP STR TO THE SOUTHEAST, AND AHEAD OF A DEEP MID- LATITUDE TROUGH APPROACHING FROM THE WEST. THE SYSTEM WILL COMPELTE EXTRATROPICAL TRANSITION WITHIN THE NEXT 12 HOURS AS IT BECOMES EMBEDDED IN THE MID-LATITUDE WESTHERLY FLOW ALOFT WHILE MOVING INTO THE SOUTHERN SEA OF OKHOTSK. 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 241800Z IS 16 FEET. REFER TO TROPICAL DEPRESSION 24W (TWENTYFOUR) WARNINGS (WTPN32 PGTW) FOR SIX-HOURLY UPDATES.
