WTPN31 PGTW 070900    
1. TROPICAL DEPRESSION 33W (RUMBIA) WARNING NR 033    
   01 ACTIVE TROPICAL CYCLONE IN NORTHWESTPAC
   MAX SUSTAINED WINDS BASED ON ONE-MINUTE AVERAGE
    ---
   WARNING POSITION:
   070600Z3 --- NEAR 9.7N6 108.1E0
     MOVEMENT PAST SIX HOURS - 255 DEGREES AT 12 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: 9.7N6 108.1E0
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   FORECASTS:
   12 HRS, VALID AT:
   071800Z6 --- 9.3N2 106.2E9
   MAX SUSTAINED WINDS - 025 KT, GUSTS 035 KT
   DISSIPATING AS A SIGNIFICANT TROPICAL CYCLONE OVER WATER
   VECTOR TO 24 HR POSIT: 245 DEG/ 08 KTS
    ---
   24 HRS, VALID AT:
   080600Z4 --- 8.7N5 104.8E3
   MAX SUSTAINED WINDS - 020 KT, GUSTS 030 KT
   DISSIPATING AS A SIGNIFICANT TROPICAL CYCLONE OVER WATER
   VECTOR TO 36 HR POSIT: 250 DEG/ 08 KTS
    ---
   36 HRS, VALID AT:
   081800Z7 --- 8.1N9 103.3E7
   MAX SUSTAINED WINDS - 020 KT, GUSTS 030 KT
   DISSIPATED AS A SIGNIFICANT TROPICAL CYCLONE OVER WATER
    ---
REMARKS:
070900Z6 POSITION NEAR 9.6N5 107.6E4.
TROPICAL DEPRESSION (TD) 33W (RUMBIA), LOCATED APPROXIMATELY 100 NM 
SOUTHEAST OF HO CHI MINH CITY, VIETNAM, HAS TRACKED WEST-
SOUTHWESTWARD AT 12 KNOTS DURING THE PAST 6 HOURS. THE WARNING 
POSITION IS BASED ON 070530Z5 VISIBLE AND INFRARED SATELLITE 
IMAGERY. THE WARNING INTENSITY IS BASED ON SATELLITE CURRENT 
INTENSITY ESTIMATES OF 25 KNOTS. ANIMATED SATELLITE IMAGERY DEPICTS 
PERSISTENT CONVECTION SHEARED 20 NM WEST OF THE FULLY EXPOSED LOW-
LEVEL CIRCULATION CENTER (LLCC). A RECENT MICROWAVE IMAGE ALSO SHOWS 
A CONVECTION-FREE LLCC. UW-CIMSS SATELLITE DERIVED WIND PRODUCTS 
INDICATE THE SYSTEM REMAINS EQUATORWARD OF THE SUBTROPICAL RIDGE 
AXIS AND UNDER MODERATE TO STRONG VERTICAL WIND SHEAR. TD 33W 
REMAINS EMBEDDED IN THE MONSOON TROUGH. TD 33W IS FORECAST TO TRACK 
WEST-SOUTHWESTWARD UNDER THE STEERING INFLUENCE OF THE LOW TO MID-
LEVEL SUBTROPICAL RIDGE TO THE NORTH OF THE SYSTEM. THE SYSTEM IS 
FORECAST TO DISSIPATE OVER WATER THROUGH THE PERIOD, DUE TO A 
MARGINAL UPPER-LEVEL ENVIRONMENT AND INCREASING INTERACTION WITH 
LAND. MAXIMUM SIGNIFICANT WAVE HEIGHT AT 070600Z3 IS 12 FEET. REFER 
TO WWPW30 RJTX FOR ADDITIONAL SEA HEIGHT INFORMATION. NEXT WARNINGS 
AT 071500Z3 (DTG 071352Z8), 072100Z0 (DTG 071952Z4), 080300Z1 (DTG 
080152Z6) AND 080900Z7 (DTG 080752Z2).//

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