WTPN31 PGTW 031500    
1. TROPICAL DEPRESSION 33W (RUMBIA) WARNING NR 023    
   01 ACTIVE TROPICAL CYCLONE IN NORTHWESTPAC
   MAX SUSTAINED WINDS BASED ON ONE-MINUTE AVERAGE
    ---
   WARNING POSITION:
   031200Z6 --- NEAR 11.5N7 114.3E9
     MOVEMENT PAST SIX HOURS - 270 DEGREES AT 17 KTS
     POSITION ACCURATE TO WITHIN 060 NM
     POSITION BASED ON CENTER LOCATED BY SATELLITE
   PRESENT WIND DISTRIBUTION:
   MAX SUSTAINED WINDS - 025 KT, GUSTS 035 KT
   DISSIPATING AS A SIGNIFICANT TROPICAL CYCLONE OVER WATER
   REPEAT POSIT: 11.5N7 114.3E9
    ---
   FORECASTS:
   12 HRS, VALID AT:
   040000Z4 --- 11.2N4 112.6E0
   MAX SUSTAINED WINDS - 025 KT, GUSTS 035 KT
   DISSIPATING AS A SIGNIFICANT TROPICAL CYCLONE OVER WATER
   VECTOR TO 24 HR POSIT: 240 DEG/ 08 KTS
    ---
   24 HRS, VALID AT:
   041200Z7 --- 10.4N5 111.3E6
   MAX SUSTAINED WINDS - 020 KT, GUSTS 030 KT
   DISSIPATING AS A SIGNIFICANT TROPICAL CYCLONE OVER WATER
   VECTOR TO 36 HR POSIT: 240 DEG/ 07 KTS
    ---
   36 HRS, VALID AT:
   050000Z5 --- 9.7N6 110.1E3
   MAX SUSTAINED WINDS - 020 KT, GUSTS 030 KT
   DISSIPATED AS A SIGNIFICANT TROPICAL CYCLONE OVER WATER
    ---
REMARKS:
031500Z9 POSITION NEAR 11.4N6  113.9E4.
TROPICAL DEPRESSION (TD) 33W (RUMBIA), LOCATED APPROXIMATELY 300NM 
EAST OF CAM RAHN BAY, VIETNAM, HAS TRACKED WESTWARD AT 17 KNOTS 
DURING THE PAST 6 HOURS. THE WARNING POSITION IS BASED ON 031130Z8 
INFRARED SATELLITE IMAGERY. THE WARNING INTENSITY IS BASED ON 
SATELLITE CURRENT INTENSITY ESTIMATES OF 25 AND 30 KNOTS AND A 
RECENT QUIKSCAT PASS. ANIMATED SATELLITE IMAGERY ALONG WITH THE UW-
CIMSS VERTICAL WIND SHEAR PRODUCT INDICATES A MODERATE VERTICAL WIND 
SHEAR ENVIRONMENT WITH THE CONVECTION BEING SHEARED OFF TO THE WEST. 
TD 33W IS FORECAST TO TRACK WESTWARD THROUGH THE NEXT 12 HOURS. THE 
TRACK WILL BECOME INCREASINGLY SOUTHWESTWARD, THROUGH THE END OF THE 
PERIOD AS A MONSOONAL SURGE WILL DRIVE THE SYSTEM SOUTH-WESTWARD. 
THEN THE SYSTEM WILL WEAKEN DUE TO INCREASING COLD AIR ENTRAINMENT 
AND INCREASING VERTICAL WIND SHEAR. MAXIMUM SIGNIFICANT WAVE HEIGHT 
AT 031200Z6 IS 15 FEET. REFER TO WWPW31 RJTX FOR ADDITIONAL SEA 
HEIGHT INFORMATION. NEXT WARNINGS AT 032100Z6 (DTG 031952Z0), 
040300Z7 (DTG 040152Z2), 040900Z3 (DTG 040752Z8) AND 041500Z0 (DTG 
041352Z5).//

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