• Pac-NW: TS Champi W26 Fin

    From Weather Alert@1:2320/105 to All on Sun Jun 27 17:52:00 2021
    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
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