WTPN32 PGTW 251500
MSGID/GENADMIN/JOINT TYPHOON WRNCEN PEARL HARBOR HI//
SUBJ/TROPICAL DEPRESSION 18W (NARRA) WARNING NR 020//
RMKS/
1. TROPICAL DEPRESSION 18W (NARRA) WARNING NR 020
DOWNGRADED FROM TROPICAL STORM 18W
03 ACTIVE TROPICAL CYCLONES IN NORTHWESTPAC
MAX SUSTAINED WINDS BASED ON ONE-MINUTE AVERAGE
WIND RADII VALID OVER OPEN WATER ONLY
---
WARNING POSITION:
251200Z --- NEAR 19.5N 108.9E
MOVEMENT PAST SIX HOURS - 080 DEGREES AT 07 KTS
POSITION ACCURATE TO WITHIN 030 NM
POSITION BASED ON CENTER LOCATED BY SATELLITE
PRESENT WIND DISTRIBUTION:
MAX SUSTAINED WINDS - 030 KT, GUSTS 040 KT
WIND RADII VALID OVER OPEN WATER ONLY
REPEAT POSIT: 19.5N 108.9E
---
FORECASTS:
12 HRS, VALID AT:
260000Z --- 20.6N 110.3E
MAX SUSTAINED WINDS - 025 KT, GUSTS 035 KT
WIND RADII VALID OVER OPEN WATER ONLY
VECTOR TO 24 HR POSIT: 015 DEG/ 05 KTS
---
24 HRS, VALID AT:
261200Z --- 21.5N 110.6E
MAX SUSTAINED WINDS - 020 KT, GUSTS 030 KT
WIND RADII VALID OVER OPEN WATER ONLY
DISSIPATING AS A SIGNIFICANT TROPICAL CYCLONE OVER LAND
VECTOR TO 36 HR POSIT: 010 DEG/ 04 KTS
---
36 HRS, VALID AT:
270000Z --- 22.2N 110.7E
MAX SUSTAINED WINDS - 015 KT, GUSTS 025 KT
WIND RADII VALID OVER OPEN WATER ONLY
DISSIPATED AS A SIGNIFICANT TROPICAL CYCLONE OVER LAND
---
REMARKS:
251500Z POSITION NEAR 19.8N 109.3E.
25AUG26. TROPICAL DEPRESSION 18W (NARRA), LOCATED APPROXIMATELY
191 NM EAST-SOUTHEAST OF HANOI, VIETNAM, HAS TRACKED EASTWARD AT
07 KNOTS OVER THE PAST SIX HOURS. MINIMUM CENTRAL PRESSURE AT 251200Z
IS 994 MB. MAXIMUM SIGNIFICANT WAVE HEIGHT AT 251200Z IS 12 FEET. NEXT WARNINGS AT 252100Z, 260300Z, 260900Z AND 261500Z.
REFER TO TYPHOON 17W (SAUDEL) WARNINGS (WTPN31 PGTW) FOR SIX-HOURLY
UPDATES. REFER TO TROPICAL CYCLONE 19W (ATSANI) FINAL WARNING (WTPN33
PGTW).//

From WDPN32:

THE FULLY EXPOSED LOW-LEVEL CIRCULATION CENTER (LLCC) IS RAPIDLY
UNRAVELING AS IT MAKES LANDFALL OVER HAINAN...
WITH THE LACK OF CONVECTION, CONTINUED LAND
INTERACTION, AND STRONG VWS, TD 18W WILL CONTINUE TO WEAKEN. WHILE
THE FORECAST GOES OUT TO TAU 36, IT IS QUITE POSSIBLE THAT THE
CIRCULATION WILL DISSIPATE SOONER. THE HOSTILE SHEAR WILL PERSIST
FOR THE NEXT 24 HOURS, AFTER WHICH TIME THE SYSTEM WILL HAVE
PROGRESSED INLAND AND THEREFORE WILL BE UNABLE TO TAP INTO THE MORE
FAVORABLE ENVIRONMENTAL CONDITIONS.


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