Advisories

WTPN32 PGTW 211500
MSGID/GENADMIN/JOINT TYPHOON WRNCEN PEARL HARBOR HI//
SUBJ/TROPICAL STORM 18W (EIGHTEEN) WARNING NR 004//
RMKS/
1. TROPICAL STORM 18W (EIGHTEEN) WARNING NR 004    
   UPGRADED FROM TROPICAL DEPRESSION 18W
   02 ACTIVE TROPICAL CYCLONES IN NORTHWESTPAC
   MAX SUSTAINED WINDS BASED ON ONE-MINUTE AVERAGE
   WIND RADII VALID OVER OPEN WATER ONLY
    ---
   WARNING POSITION:
   211200Z --- NEAR 20.8N 108.8E
     MOVEMENT PAST SIX HOURS - 045 DEGREES AT 03 KTS
     POSITION ACCURATE TO WITHIN 060 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
                            050 NM SOUTHEAST QUADRANT
                            050 NM SOUTHWEST QUADRANT
                            040 NM NORTHWEST QUADRANT
   REPEAT POSIT: 20.8N 108.8E
    ---
   FORECASTS:
   12 HRS, VALID AT:
   220000Z --- 21.1N 109.0E
   MAX SUSTAINED WINDS - 035 KT, GUSTS 045 KT
   WIND RADII VALID OVER OPEN WATER ONLY
   RADIUS OF 034 KT WINDS - 000 NM NORTHEAST QUADRANT
                            040 NM SOUTHEAST QUADRANT
                            040 NM SOUTHWEST QUADRANT
                            030 NM NORTHWEST QUADRANT
   VECTOR TO 24 HR POSIT: 045 DEG/ 01 KTS
    ---
   24 HRS, VALID AT:
   221200Z --- 21.3N 109.2E
   MAX SUSTAINED WINDS - 035 KT, GUSTS 045 KT
   WIND RADII VALID OVER OPEN WATER ONLY
   RADIUS OF 034 KT WINDS - 000 NM NORTHEAST QUADRANT
                            030 NM SOUTHEAST QUADRANT
                            040 NM SOUTHWEST QUADRANT
                            020 NM NORTHWEST QUADRANT
   VECTOR TO 36 HR POSIT: 090 DEG/ 01 KTS
    ---
   36 HRS, VALID AT:
   230000Z --- 21.3N 109.5E
   MAX SUSTAINED WINDS - 035 KT, GUSTS 045 KT
   WIND RADII VALID OVER OPEN WATER ONLY
   RADIUS OF 034 KT WINDS - 000 NM NORTHEAST QUADRANT
                            030 NM SOUTHEAST QUADRANT
                            040 NM SOUTHWEST QUADRANT
                            020 NM NORTHWEST QUADRANT
   VECTOR TO 48 HR POSIT: 090 DEG/ 02 KTS
    ---
   EXTENDED OUTLOOK:
   48 HRS, VALID AT:
   231200Z --- 21.3N 109.9E
   MAX SUSTAINED WINDS - 030 KT, GUSTS 040 KT
   WIND RADII VALID OVER OPEN WATER ONLY
   VECTOR TO 60 HR POSIT: 075 DEG/ 02 KTS
    ---
   60 HRS, VALID AT:
   240000Z --- 21.4N 110.3E
   MAX SUSTAINED WINDS - 025 KT, GUSTS 035 KT
   WIND RADII VALID OVER OPEN WATER ONLY
   DISSIPATING AS A SIGNIFICANT TROPICAL CYCLONE OVER LAND
   VECTOR TO 72 HR POSIT: 065 DEG/ 03 KTS
    ---
   72 HRS, VALID AT:
   241200Z --- 21.6N 110.8E
   MAX SUSTAINED WINDS - 020 KT, GUSTS 030 KT
   WIND RADII VALID OVER OPEN WATER ONLY
   DISSIPATED AS A SIGNIFICANT TROPICAL CYCLONE OVER LAND
    ---
REMARKS:
211500Z POSITION NEAR 20.9N 108.8E.
21AUG26. TROPICAL STORM 18W (EIGHTEEN), LOCATED APPROXIMATELY 163
NM EAST OF HANOI, VIETNAM, HAS TRACKED NORTHEASTWARD AT 03 KNOTS
OVER THE PAST SIX HOURS.
MINIMUM CENTRAL PRESSURE AT 211200Z IS 994 MB. MAXIMUM
SIGNIFICANT WAVE HEIGHT AT 211200Z IS 12 FEET. NEXT WARNINGS AT
212100Z, 220300Z, 220900Z AND 221500Z.
REFER TO TYPHOON 17W (SAUDEL) WARNINGS (WTPN31 PGTW)
FOR SIX-HOURLY UPDATES.//
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