Advisories

WTPN32 PGTW 250300
MSGID/GENADMIN/JOINT TYPHOON WRNCEN PEARL HARBOR HI//
SUBJ/TROPICAL STORM 18W (NARRA) WARNING NR 018//
RMKS/
1. TROPICAL STORM 18W (NARRA) WARNING NR 018    
   03 ACTIVE TROPICAL CYCLONES IN NORTHWESTPAC
   MAX SUSTAINED WINDS BASED ON ONE-MINUTE AVERAGE
   WIND RADII VALID OVER OPEN WATER ONLY
    ---
   WARNING POSITION:
   250000Z --- NEAR 19.3N 107.5E
     MOVEMENT PAST SIX HOURS - 205 DEGREES AT 02 KTS
     POSITION ACCURATE TO WITHIN 030 NM
     POSITION BASED ON CENTER LOCATED BY A COMBINATION OF 
     SATELLITE AND RADAR
   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
                            055 NM SOUTHEAST QUADRANT
                            065 NM SOUTHWEST QUADRANT
                            000 NM NORTHWEST QUADRANT
   REPEAT POSIT: 19.3N 107.5E
    ---
   FORECASTS:
   12 HRS, VALID AT:
   251200Z --- 19.6N 108.5E
   MAX SUSTAINED WINDS - 030 KT, GUSTS 040 KT
   WIND RADII VALID OVER OPEN WATER ONLY
   VECTOR TO 24 HR POSIT: 045 DEG/ 08 KTS
    ---
   24 HRS, VALID AT:
   260000Z --- 20.7N 109.6E
   MAX SUSTAINED WINDS - 025 KT, GUSTS 035 KT
   WIND RADII VALID OVER OPEN WATER ONLY
   DISSIPATED AS A SIGNIFICANT TROPICAL CYCLONE OVER WATER
   VECTOR TO 36 HR POSIT: 035 DEG/ 06 KTS
    ---
   36 HRS, VALID AT:
   261200Z --- 21.7N 110.3E
   MAX SUSTAINED WINDS - 020 KT, GUSTS 030 KT
   WIND RADII VALID OVER OPEN WATER ONLY
   DISSIPATED AS A SIGNIFICANT TROPICAL CYCLONE OVER LAND
    ---
REMARKS:
250300Z POSITION NEAR 19.4N 107.8E.
25AUG26. TROPICAL STORM 18W (NARRA), LOCATED APPROXIMATELY 136 NM
SOUTHEAST OF HANOI, VIETNAM, HAS TRACKED SOUTH-SOUTHWESTWARD AT
02 KNOTS OVER THE PAST SIX HOURS.
MINIMUM CENTRAL PRESSURE AT 250000Z IS 993 MB. MAXIMUM
SIGNIFICANT WAVE HEIGHT AT 250000Z IS 11 FEET. NEXT WARNINGS AT
250900Z, 251500Z, 252100Z AND 260300Z.
REFER TO TYPHOON 17W (SAUDEL) WARNINGS (WTPN31 PGTW)
FOR SIX-HOURLY UPDATES.
REFER TO TROPICAL DEPRESSION 19W (ATSANI) WARNINGS (WTPN33 PGTW)
FOR SIX-HOURLY UPDATES.
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