120900Z POSITION NEAR 32.8N 135.4E. TROPICAL STORM 06W (NOUL), LOCATED APPROXIMATELY 412 NM SOUTHWEST OF YOKOSUKA, JAPAN, HAS TRACKED NORTHEASTWARD AT 51 KNOTS OVER THE PAST SIX HOURS. ANIMATED MULTISPECTRAL SATELLITE IMAGERY (MSI) SHOWS THE SYSTEM HAS SIGNIFICANTLY UNRAVELED AS IT ACCELERATED INTO THE COLD BAROCLINIC AIR MASS. THE INITIAL POSITION IS BASED ON THE MSI ANIMATION AND A COMPOSITE RADAR LOOP FROM KYUSHU WITH GOOD CONFIDENCE. THE INITIAL INTENSITY IS BASED ON NEARBY SURFACE OBSERVATIONS AND IS SUPPORTED BY DVORAK ESTIMATES FROM PGTW, KNES, AND RJTD. THE CYCLONE HAS BECOME EXTRA-TROPICAL AND IS EXPECTED TO EMBED FURTHER INTO THE BAROCLINIC ZONE. 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 120600Z IS 25 FEET. REFER TO TROPICAL STORM 07W (DOLPHIN) WARNINGS (WTPN32 PGTW) FOR SIX-HOURLY UPDATES.
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