Advisories

WTPN31 PGTW 220900
MSGID/GENADMIN/JOINT TYPHOON WRNCEN PEARL HARBOR HI//
SUBJ/TROPICAL STORM 24W (DUJUAN) WARNING NR 028//
RMKS/
1. TROPICAL STORM 24W (DUJUAN) WARNING NR 028    
   DOWNGRADED FROM TYPHOON 24W
   01 ACTIVE TROPICAL CYCLONE IN NORTHWESTPAC
   MAX SUSTAINED WINDS BASED ON ONE-MINUTE AVERAGE
   WIND RADII VALID OVER OPEN WATER ONLY
    ---
   WARNING POSITION:
   220600Z --- NEAR 39.0N 150.2E
     MOVEMENT PAST SIX HOURS - 070 DEGREES AT 24 KTS
     POSITION ACCURATE TO WITHIN 030 NM
     POSITION BASED ON CENTER LOCATED BY SATELLITE
   PRESENT WIND DISTRIBUTION:
   MAX SUSTAINED WINDS - 060 KT, GUSTS 075 KT
   WIND RADII VALID OVER OPEN WATER ONLY
   BECOMING EXTRATROPICAL
   RADIUS OF 050 KT WINDS - 070 NM NORTHEAST QUADRANT
                            100 NM SOUTHEAST QUADRANT
                            080 NM SOUTHWEST QUADRANT
                            000 NM NORTHWEST QUADRANT
   RADIUS OF 034 KT WINDS - 125 NM NORTHEAST QUADRANT
                            185 NM SOUTHEAST QUADRANT
                            180 NM SOUTHWEST QUADRANT
                            145 NM NORTHWEST QUADRANT
   REPEAT POSIT: 39.0N 150.2E
    ---
   FORECASTS:
   12 HRS, VALID AT:
   221800Z --- 40.9N 157.5E
   MAX SUSTAINED WINDS - 050 KT, GUSTS 065 KT
   WIND RADII VALID OVER OPEN WATER ONLY
   EXTRATROPICAL
   RADIUS OF 050 KT WINDS - 040 NM NORTHEAST QUADRANT
                            070 NM SOUTHEAST QUADRANT
                            060 NM SOUTHWEST QUADRANT
                            000 NM NORTHWEST QUADRANT
   RADIUS OF 034 KT WINDS - 090 NM NORTHEAST QUADRANT
                            190 NM SOUTHEAST QUADRANT
                            200 NM SOUTHWEST QUADRANT
                            130 NM NORTHWEST QUADRANT
   VECTOR TO 24 HR POSIT: 070 DEG/ 35 KTS
    ---
   24 HRS, VALID AT:
   230600Z --- 42.9N 166.4E
   MAX SUSTAINED WINDS - 040 KT, GUSTS 050 KT
   WIND RADII VALID OVER OPEN WATER ONLY
   EXTRATROPICAL
   RADIUS OF 034 KT WINDS - 040 NM NORTHEAST QUADRANT
                            190 NM SOUTHEAST QUADRANT
                            230 NM SOUTHWEST QUADRANT
                            070 NM NORTHWEST QUADRANT
    ---
REMARKS:
220900Z POSITION NEAR 39.5N 152.0E.
22SEP26. TROPICAL STORM 24W (DUJUAN), LOCATED APPROXIMATELY 424
NM EAST OF MISAWA, JAPAN, HAS TRACKED EAST-NORTHEASTWARD AT 24
KNOTS OVER THE PAST SIX HOURS. ANIMATED MULTI-SPECTRAL IMAGERY
DEPICTS TROPICAL STORM (TS) 24W (DUJUAN) WITH A VERY BROAD,
ELONGATED, AND FULLY EXPOSED LOW-LEVEL CIRCULATION CENTER. CONVECTION
IS HIGHLY SHEARED TO THE NORTHEAST AS THE SYSTEM FURTHER EMBEDS
ITSELF UNDER THE UPPER LEVEL JET. ENVIRONMENTAL ANALYSIS REVEALS A
HOSTILE ENVIRONMENT CHARACTERIZED BY COLD (23-24 C) SEA
SURFACE TEMPERATURES, EXTREME (60-65 KTS) VERTICAL WIND SHEAR,
EXTENSIVE DRY AIR ENTRAINMENT. 24W IS ASSESSED TO BE CURRENTLY
UNDERGOING EXTRATROPICAL TRANSITION (ETT), EXHIBITING MODERATE
TEMPERATURE ADVECTION INDUCED BY INTERACTION WITH THE JET. GLOBAL
DETERMINISTIC MODELS ARE IN STRONG AGREEMENT THAT 24W WILL COMPLETE
ETT WITHIN 12 HOURS AND CONTINUE TRACKING POLEWARD THROUGH THE
REMAINDER OF THE FORECAST PERIOD. 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. MINIMUM CENTRAL
PRESSURE AT 220600Z IS 975 MB. MAXIMUM SIGNIFICANT WAVE HEIGHT AT
220600Z IS 31 FEET.//
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