WTPN31 PGTW 042100
MSGID/GENADMIN/JOINT TYPHOON WRNCEN PEARL HARBOR HI//
SUBJ/TROPICAL STORM 21W (PEIPAH) WARNING NR 006//
RMKS/
1. TROPICAL STORM 21W (PEIPAH) WARNING NR 006    
   01 ACTIVE TROPICAL CYCLONE IN NORTHWESTPAC
   MAX SUSTAINED WINDS BASED ON ONE-MINUTE AVERAGE
   WIND RADII VALID OVER OPEN WATER ONLY
    ---
   WARNING POSITION:
   041800Z --- NEAR 33.1N 132.8E
     MOVEMENT PAST SIX HOURS - 040 DEGREES AT 10 KTS
     POSITION ACCURATE TO WITHIN 020 NM
     POSITION BASED ON CENTER LOCATED BY A COMBINATION OF 
     SATELLITE, RADAR AND SYNOPTIC DATA
   PRESENT WIND DISTRIBUTION:
   MAX SUSTAINED WINDS - 035 KT, GUSTS 045 KT
   WIND RADII VALID OVER OPEN WATER ONLY
   RADIUS OF 034 KT WINDS - 000 NM NORTHEAST QUADRANT
                            085 NM SOUTHEAST QUADRANT
                            045 NM SOUTHWEST QUADRANT
                            000 NM NORTHWEST QUADRANT
   REPEAT POSIT: 33.1N 132.8E
    ---
   FORECASTS:
   12 HRS, VALID AT:
   050600Z --- 34.3N 137.1E
   MAX SUSTAINED WINDS - 035 KT, GUSTS 045 KT
   WIND RADII VALID OVER OPEN WATER ONLY
   RADIUS OF 034 KT WINDS - 040 NM NORTHEAST QUADRANT
                            100 NM SOUTHEAST QUADRANT
                            100 NM SOUTHWEST QUADRANT
                            010 NM NORTHWEST QUADRANT
   VECTOR TO 24 HR POSIT: 080 DEG/ 24 KTS
    ---
   24 HRS, VALID AT:
   051800Z --- 35.0N 142.9E
   MAX SUSTAINED WINDS - 040 KT, GUSTS 050 KT
   WIND RADII VALID OVER OPEN WATER ONLY
   BECOMING EXTRATROPICAL
   RADIUS OF 034 KT WINDS - 100 NM NORTHEAST QUADRANT
                            120 NM SOUTHEAST QUADRANT
                            140 NM SOUTHWEST QUADRANT
                            080 NM NORTHWEST QUADRANT
   VECTOR TO 36 HR POSIT: 090 DEG/ 25 KTS
    ---
   36 HRS, VALID AT:
   060600Z --- 34.7N 149.0E
   MAX SUSTAINED WINDS - 045 KT, GUSTS 055 KT
   WIND RADII VALID OVER OPEN WATER ONLY
   EXTRATROPICAL
   RADIUS OF 034 KT WINDS - 120 NM NORTHEAST QUADRANT
                            120 NM SOUTHEAST QUADRANT
                            140 NM SOUTHWEST QUADRANT
                            130 NM NORTHWEST QUADRANT
    ---
REMARKS:
042100Z POSITION NEAR 33.4N 133.9E.
04SEP25. TROPICAL STORM 21W (PEIPAH), LOCATED APPROXIMATELY 80 NM
SOUTH-SOUTHEAST OF IWAKUNI, JAPAN, HAS TRACKED NORTHEASTWARD AT
10 KNOTS OVER THE PAST SIX HOURS.
MINIMUM CENTRAL PRESSURE AT 041800Z IS 1000 MB. MAXIMUM
SIGNIFICANT WAVE HEIGHT AT 041800Z IS 20 FEET. NEXT WARNINGS AT
050300Z, 050900Z, 051500Z AND 052100Z.
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