WTPN31 PGTW 150900
MSGID/GENADMIN/JOINT TYPHOON WRNCEN PEARL HARBOR HI//
SUBJ/TROPICAL DEPRESSION 03W (THREE) WARNING NR 003//
RMKS/
1. TROPICAL DEPRESSION 03W (THREE) WARNING NR 003    
   01 ACTIVE TROPICAL CYCLONE IN NORTHWESTPAC
   MAX SUSTAINED WINDS BASED ON ONE-MINUTE AVERAGE
   WIND RADII VALID OVER OPEN WATER ONLY
    ---
   WARNING POSITION:
   150600Z --- NEAR 17.0N 107.8E
     MOVEMENT PAST SIX HOURS - 300 DEGREES AT 16 KTS
     POSITION ACCURATE TO WITHIN 050 NM
     POSITION BASED ON CENTER LOCATED BY A COMBINATION OF 
     SATELLITE AND SYNOPTIC DATA
   PRESENT WIND DISTRIBUTION:
   MAX SUSTAINED WINDS - 025 KT, GUSTS 035 KT
   WIND RADII VALID OVER OPEN WATER ONLY
   DISSIPATING AS A SIGNIFICANT TROPICAL CYCLONE OVER WATER
   REPEAT POSIT: 17.0N 107.8E
    ---
   FORECASTS:
   12 HRS, VALID AT:
   151800Z --- 17.5N 105.7E
   MAX SUSTAINED WINDS - 020 KT, GUSTS 030 KT
   WIND RADII VALID OVER OPEN WATER ONLY
   DISSIPATED AS A SIGNIFICANT TROPICAL CYCLONE OVER LAND
   VECTOR TO 24 HR POSIT: 265 DEG/ 10 KTS
    ---
   24 HRS, VALID AT:
   160600Z --- 17.4N 103.7E
   MAX SUSTAINED WINDS - 015 KT, GUSTS 025 KT
   WIND RADII VALID OVER OPEN WATER ONLY
   DISSIPATED AS A SIGNIFICANT TROPICAL CYCLONE OVER LAND
    ---
REMARKS:
150900Z POSITION NEAR 17.1N 107.3E.
15JUL24. TROPICAL DEPRESSION (TD) 03W (THREE), LOCATED APPROXIMATELY
67 NM NORTH-NORTHWEST OF DA NANG, VIETNAM, HAS TRACKED WEST-
NORTHWESTWARD AT 16 KNOTS OVER THE PAST SIX HOURS. AS REVEALED IN 
ANIMATED VISIBLE IMAGERY, THE LOW-LEVEL STRUCTURE HAS DETERIORATED, 
WITH LOW-LEVEL CLOUD LINES WRAPPING INTO A BROAD CENTER. A LINE OF 
DEEP CONVECTION OVER THE NORTHERN SEMICIRCLE IS RAPIDLY FRAGMENTING 
AND DECAYING DUE TO PERSISTENT STRONG (30 TO 40 KNOTS) EAST-
NORTHEASTERLY VERTICAL WIND SHEAR. SURFACE OBSERVATIONS OVER THE 
NORTHERN PERIPHERY OF THE SYSTEM HAVE DECREASED AND NOW RANGE FROM 17 
TO 22 KNOTS. SUSTAINED SURFACE WINDS AT SANYA (59948) HAVE ALSO 
DECREASED FROM 21 KNOTS (10-MINUTE AVERAGE) TO 18 KNOTS AT 150600Z. 
BASED ON THESE SURFACE OBSERVATIONS AND DVORAK ESTIMATES OF T1.0 (RJTD 
/ PGTW), THE INITIAL INTENSITY IS ASSESSED AT 25 KNOTS. AS THE SYSTEM 
TRACKS WEST-NORTHWESTWARD INTO VIETNAM AND LAOS OVER THE NEXT 12 
HOURS, FURTHER WEAKENING IS ANTICIPATED OVER THE MOUNTAINOUS TERRAIN 
WITH DISSIPATION LIKELY BY TAU 12. THIS IS THE FINAL WARNING ON THIS 
SYSTEM BY THE JOINT TYPHOON WRNCEN PEARL HARBOR HI. THE SYSTEM WILL BE 
CLOSELY MONITORED FOR SIGNS OF REGENERATION. MINIMUM CENTRAL PRESSURE 
AT 150600Z IS 1000 MB. MAXIMUM SIGNIFICANT WAVE HEIGHT AT 150600Z IS 
14 FEET.//
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