WTXS31 PGTW 051500
MSGID/GENADMIN/JOINT TYPHOON WRNCEN PEARL HARBOR HI//
SUBJ/TROPICAL CYCLONE 25S (TWENTYFIVE) WARNING NR 006//
RMKS/
1. TROPICAL CYCLONE 25S (TWENTYFIVE) WARNING NR 006    
   01 ACTIVE TROPICAL CYCLONE IN SOUTHIO
   MAX SUSTAINED WINDS BASED ON ONE-MINUTE AVERAGE
   WIND RADII VALID OVER OPEN WATER ONLY
    ---
   WARNING POSITION:
   051200Z --- NEAR 11.9S 118.9E
     MOVEMENT PAST SIX HOURS - 110 DEGREES AT 31 KTS
     POSITION ACCURATE TO WITHIN 040 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 - 055 NM NORTHEAST QUADRANT
                            030 NM SOUTHEAST QUADRANT
                            030 NM SOUTHWEST QUADRANT
                            055 NM NORTHWEST QUADRANT
   REPEAT POSIT: 11.9S 118.9E
    ---
   FORECASTS:
   12 HRS, VALID AT:
   060000Z --- 13.8S 121.6E
   MAX SUSTAINED WINDS - 030 KT, GUSTS 040 KT
   WIND RADII VALID OVER OPEN WATER ONLY
   DISSIPATED AS A SIGNIFICANT TROPICAL CYCLONE OVER WATER
    ---
REMARKS:
051500Z POSITION NEAR 12.4S 119.6E.
05MAR26. TROPICAL CYCLONE 25S (TWENTYFIVE), LOCATED APPROXIMATELY
408 NM NORTH-NORTHWEST OF BROOME, AUSTRALIA, HAS TRACKED EAST-
SOUTHEASTWARD AT 31 KNOTS OVER THE PAST SIX HOURS. ANIMATED ENHANCED
INFRARED (EIR) SATELLITE IMAGERY DEPICTS A RAPIDLY ACCELERATING AND
HEAVILY SHEARED SYSTEM, WITH FULLY EXPOSED LOW-LEVEL CIRCULATION
CENTER (LLCC). OVER THE COURSE OF THE LAST FEW HOURS, VERY HIGH
(30+ KTS) VERTICAL WIND SHEAR (VWS) HAS ERODED ALL OF WHAT REMAINED
OF THE DEEP CONVECTION. THOSE EFFECTS ARE FURTHER AMPLIFIED BY DRY
AIR ENTRAINMENT AS THE SYSTEM TRANSITS SOUTHEASTWARD UNDER THE
INFLUENCE OF A NEAR-EQUATORIAL RIDGE CENTERED TO THE NORTH. WHILE
RESIDUAL, SHALLOW CONVECTIVE FLARE-UPS PERSIST AROUND THE PERIPHERY
OF THE SYSTEM, RAPIDLY INCREASING TRANSLATIONAL SPEED AND OVERALL
HOSTILE ENVIRONMENT WILL INDUCE CONTINUOUS WEAKENING, RESULTING IN
FULL DISSIPATION WITHIN THE NEXT 12 HOURS. 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 051200Z IS 999 MB. MAXIMUM SIGNIFICANT WAVE
HEIGHT AT 051200Z IS 12 FEET.
//
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