WTPN33 PGTW 281500
MSGID/GENADMIN/JOINT TYPHOON WRNCEN PEARL HARBOR HI//
SUBJ/TROPICAL DEPRESSION 11W (NEPARTAK) WARNING NR 021//
RMKS/
1. TROPICAL DEPRESSION 11W (NEPARTAK) WARNING NR 021    
   02 ACTIVE TROPICAL CYCLONES IN NORTHWESTPAC
   MAX SUSTAINED WINDS BASED ON ONE-MINUTE AVERAGE
   WIND RADII VALID OVER OPEN WATER ONLY
    ---
   WARNING POSITION:
   281200Z --- NEAR 40.9N 138.5E
     MOVEMENT PAST SIX HOURS - 300 DEGREES AT 15 KTS
     POSITION ACCURATE TO WITHIN 040 NM
     POSITION BASED ON CENTER LOCATED BY SATELLITE
   PRESENT WIND DISTRIBUTION:
   MAX SUSTAINED WINDS - 025 KT, GUSTS 035 KT
   WIND RADII VALID OVER OPEN WATER ONLY
   DISSIPATING AS A SIGNIFICANT TROPICAL CYCLONE OVER WATER
   REPEAT POSIT: 40.9N 138.5E
    ---
   FORECASTS:
   12 HRS, VALID AT:
   290000Z --- 41.4N 136.6E
   MAX SUSTAINED WINDS - 020 KT, GUSTS 030 KT
   WIND RADII VALID OVER OPEN WATER ONLY
   DISSIPATING AS A SIGNIFICANT TROPICAL CYCLONE OVER WATER
   VECTOR TO 24 HR POSIT: 265 DEG/ 05 KTS
    ---
   24 HRS, VALID AT:
   291200Z --- 41.3N 135.4E
   MAX SUSTAINED WINDS - 020 KT, GUSTS 030 KT
   WIND RADII VALID OVER OPEN WATER ONLY
   DISSIPATED AS A SIGNIFICANT TROPICAL CYCLONE OVER WATER
    ---
REMARKS:
281500Z POSITION NEAR 41.0N 138.0E.
28JUL21. TROPICAL DEPRESSION 11W (NEPARTAK), LOCATED APPROXIMATELY 
127 NM WEST-NORTHWEST OF MISAWA, JAPAN, HAS TRACKED WEST-
NORTHWESTWARD AT 15 KNOTS OVER THE PAST SIX HOURS. 11W REMAINS 
ASSESSED AS A SUBTROPICAL DEPRESSION. 11W HAS REEMERGED OVER WATER 
AFTER QUICKLY TRAVERSING ACROSS NORTHERN HONSHU. HOWEVER THE OVERALL 
CIRCULATION WAS SIGNIFICANTLY DEGRADED DUE TO TERRAIN INTERACTION. 
THE INITIAL POSITION IS ASSESSED WITH HIGH CONFIDENCE BASED ON THE 
EXPOSED LOW LEVEL CIRCULATION CENTER (LLCC) IN ANIMATED ENHANCED 
INFRARED IMAGERY. THE INITIAL INTENSITY IS ASSESSED WITH HIGH 
CONFIDENCE BASED ON A SERIES OF SCATTEROMETER PASSES NEAR THE 
280900Z HOUR, WHICH CONFIRMED A SMALL AREA OF 25 KNOT WINDS CONFINED 
TO THE NORTHERN SEMICIRCLE OF THE CIRCULATION. OVER THE NEXT 24 
HOURS, THE DEVELOPMENT OF UPPER-LEVEL CONVERGENT FLOW, INCREASING 
NORTHERLY VWS AND ENTRAINMENT OF MID-LEVEL DRY AIR, WILL SERVE TO 
DISSIPATE 11W OVER THE NORTHERN SEA OF JAPAN. 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 281200Z
IS 10 FEET.//
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