WTXS31 PGTW 262100
MSGID/GENADMIN/JOINT TYPHOON WRNCEN PEARL HARBOR HI//
SUBJ/TROPICAL CYCLONE 20S (BIANCA) WARNING NR 008//
RMKS/
1. TROPICAL CYCLONE 20S (BIANCA) WARNING NR 008    
   03 ACTIVE TROPICAL CYCLONES IN SOUTHIO
   MAX SUSTAINED WINDS BASED ON ONE-MINUTE AVERAGE
   WIND RADII VALID OVER OPEN WATER ONLY
    ---
   WARNING POSITION:
   261800Z --- NEAR 26.6S 104.2E
     MOVEMENT PAST SIX HOURS - 125 DEGREES AT 05 KTS
     POSITION ACCURATE TO WITHIN 030 NM
     POSITION BASED ON CENTER LOCATED BY SATELLITE
   PRESENT WIND DISTRIBUTION:
   MAX SUSTAINED WINDS - 035 KT, GUSTS 045 KT
   WIND RADII VALID OVER OPEN WATER ONLY
   DISSIPATING AS A SIGNIFICANT TROPICAL CYCLONE OVER WATER
   RADIUS OF 034 KT WINDS - 045 NM NORTHEAST QUADRANT
                            100 NM SOUTHEAST QUADRANT
                            065 NM SOUTHWEST QUADRANT
                            050 NM NORTHWEST QUADRANT
   REPEAT POSIT: 26.6S 104.2E
    ---
   FORECASTS:
   12 HRS, VALID AT:
   270600Z --- 26.3S 103.1E
   MAX SUSTAINED WINDS - 030 KT, GUSTS 040 KT
   WIND RADII VALID OVER OPEN WATER ONLY
   DISSIPATED AS A SIGNIFICANT TROPICAL CYCLONE OVER WATER
    ---
REMARKS:
262100Z POSITION NEAR 26.5S 103.9E.
26FEB25. TROPICAL CYCLONE 20S (BIANCA), LOCATED APPROXIMATELY 599
NM WEST-SOUTHWEST OF LEARMONTH, AUSTRALIA, HAS TRACKED
SOUTHEASTWARD AT 05 KNOTS OVER THE PAST SIX HOURS. THE CURRENT 
POSITION IS SET WITH HIGH CONFIDENCE ON A FULLY EXPOSED LOW-LEVEL 
CIRCULATION EVIDENT IN ENHANCED INFRARED IMAGERY AND A 261455Z METOP-
B ASCAT PASS, WHICH ALSO SUPPORTS THE INTENSITY ESTIMATE OF 35 KNOTS. 
TC 20S IS RAPIDLY WEAKENING AND UNRAVELING UNDER THE DUAL INFLUENCES 
OF VERY STRONG NORTHWESTERLY VERTICAL WIND SHEAR AND PASSAGE OVER 
COOL WATER. 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 261800Z IS
1005 MB. MAXIMUM SIGNIFICANT WAVE HEIGHT AT 261800Z IS 15 FEET.
REFER TO TROPICAL CYCLONE 22S (GARANCE) WARNINGS (WTXS32 PGTW)
FOR TWELVE-HOURLY UPDATES. REFER TO TROPICAL CYCLONE 23S (HONDE) 
WARNINGS (WTXS33 PGTW) FOR TWELVE-HOURLY UPDATES.//
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