Advisories

WTPN32 PGTW 232100
MSGID/GENADMIN/JOINT TYPHOON WRNCEN PEARL HARBOR HI//
SUBJ/TROPICAL STORM 18W (NARRA) WARNING NR 013//
RMKS/
1. TROPICAL STORM 18W (NARRA) WARNING NR 013    
   03 ACTIVE TROPICAL CYCLONES IN NORTHWESTPAC
   MAX SUSTAINED WINDS BASED ON ONE-MINUTE AVERAGE
   WIND RADII VALID OVER OPEN WATER ONLY
    ---
   WARNING POSITION:
   231800Z --- NEAR 20.4N 107.8E
     MOVEMENT PAST SIX HOURS - 240 DEGREES AT 02 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 - 040 KT, GUSTS 050 KT
   WIND RADII VALID OVER OPEN WATER ONLY
   RADIUS OF 034 KT WINDS - 020 NM NORTHEAST QUADRANT
                            030 NM SOUTHEAST QUADRANT
                            050 NM SOUTHWEST QUADRANT
                            040 NM NORTHWEST QUADRANT
   REPEAT POSIT: 20.4N 107.8E
    ---
   FORECASTS:
   12 HRS, VALID AT:
   240600Z --- 20.1N 107.7E
   MAX SUSTAINED WINDS - 040 KT, GUSTS 050 KT
   WIND RADII VALID OVER OPEN WATER ONLY
   RADIUS OF 034 KT WINDS - 020 NM NORTHEAST QUADRANT
                            030 NM SOUTHEAST QUADRANT
                            040 NM SOUTHWEST QUADRANT
                            030 NM NORTHWEST QUADRANT
   VECTOR TO 24 HR POSIT: 105 DEG/ 03 KTS
    ---
   24 HRS, VALID AT:
   241800Z --- 19.9N 108.4E
   MAX SUSTAINED WINDS - 040 KT, GUSTS 050 KT
   WIND RADII VALID OVER OPEN WATER ONLY
   RADIUS OF 034 KT WINDS - 015 NM NORTHEAST QUADRANT
                            020 NM SOUTHEAST QUADRANT
                            040 NM SOUTHWEST QUADRANT
                            020 NM NORTHWEST QUADRANT
   VECTOR TO 36 HR POSIT: 055 DEG/ 03 KTS
    ---
   36 HRS, VALID AT:
   250600Z --- 20.3N 109.0E
   MAX SUSTAINED WINDS - 035 KT, GUSTS 045 KT
   WIND RADII VALID OVER OPEN WATER ONLY
   RADIUS OF 034 KT WINDS - 010 NM NORTHEAST QUADRANT
                            020 NM SOUTHEAST QUADRANT
                            030 NM SOUTHWEST QUADRANT
                            010 NM NORTHWEST QUADRANT
   VECTOR TO 48 HR POSIT: 035 DEG/ 04 KTS
    ---
   EXTENDED OUTLOOK:
   48 HRS, VALID AT:
   251800Z --- 21.0N 109.5E
   MAX SUSTAINED WINDS - 035 KT, GUSTS 045 KT
   WIND RADII VALID OVER OPEN WATER ONLY
   RADIUS OF 034 KT WINDS - 010 NM NORTHEAST QUADRANT
                            015 NM SOUTHEAST QUADRANT
                            020 NM SOUTHWEST QUADRANT
                            010 NM NORTHWEST QUADRANT
   VECTOR TO 60 HR POSIT: 360 DEG/ 06 KTS
    ---
   60 HRS, VALID AT:
   260600Z --- 22.1N 109.5E
   MAX SUSTAINED WINDS - 030 KT, GUSTS 040 KT
   WIND RADII VALID OVER OPEN WATER ONLY
   DISSIPATING AS A SIGNIFICANT TROPICAL CYCLONE OVER LAND
   VECTOR TO 72 HR POSIT: 310 DEG/ 03 KTS
    ---
   72 HRS, VALID AT:
   261800Z --- 22.5N 109.0E
   MAX SUSTAINED WINDS - 020 KT, GUSTS 030 KT
   WIND RADII VALID OVER OPEN WATER ONLY
   DISSIPATED AS A SIGNIFICANT TROPICAL CYCLONE OVER LAND
    ---
REMARKS:
232100Z POSITION NEAR 20.3N 107.8E. 23AUG26. TROPICAL STORM 18W 
(NARRA), LOCATED APPROXIMATELY 113 NM EAST-SOUTHEAST OF HANOI, VIETNAM, 
HAS TRACKED WEST-SOUTHWESTWARD AT 02 KNOTS OVER THE PAST SIX HOURS.
MINIMUM CENTRAL PRESSURE AT 231800Z IS 992 MB. MAXIMUM SIGNIFICANT WAVE 
HEIGHT AT 231800Z IS 12 FEET. NEXT WARNINGS AT 240300Z, 240900Z, 
241500Z AND 242100Z. REFER TO TYPHOON 17W (SAUDEL) WARNINGS (WTPN31 
PGTW) FOR SIX-HOURLY UPDATES. REFER TO TROPICAL DEPRESSION 19W 
(NINETEEN) WARNINGS (WTPN33 PGTW) FOR SIX-HOURLY UPDATES.//
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