WTXS31 PGTW 241500
MSGID/GENADMIN/JOINT TYPHOON WRNCEN PEARL HARBOR HI//
SUBJ/TROPICAL CYCLONE 18S (NEVILLE) WARNING NR 042//
RMKS/
1. TROPICAL CYCLONE 18S (NEVILLE) WARNING NR 042    
   01 ACTIVE TROPICAL CYCLONE IN SOUTHIO
   MAX SUSTAINED WINDS BASED ON ONE-MINUTE AVERAGE
   WIND RADII VALID OVER OPEN WATER ONLY
    ---
   WARNING POSITION:
   241200Z --- NEAR 23.3S 89.3E
     MOVEMENT PAST SIX HOURS - 230 DEGREES AT 09 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 - 035 NM NORTHEAST QUADRANT
                            055 NM SOUTHEAST QUADRANT
                            065 NM SOUTHWEST QUADRANT
                            020 NM NORTHWEST QUADRANT
   REPEAT POSIT: 23.3S 89.3E
    ---
   FORECASTS:
   12 HRS, VALID AT:
   250000Z --- 24.2S 87.4E
   MAX SUSTAINED WINDS - 030 KT, GUSTS 040 KT
   WIND RADII VALID OVER OPEN WATER ONLY
   DISSIPATED AS A SIGNIFICANT TROPICAL CYCLONE OVER WATER
    ---
REMARKS:
241500Z POSITION NEAR 23.5S 88.8E. 24MAR24. 
TROPICAL CYCLONE (TC) 18S (NEVILLE), LOCATED APPROXIMATELY 1371 NM 
WEST OF LEARMONTH, AUSTRALIA, HAS TRACKED SOUTHWESTWARD AT 09 KNOTS 
OVER THE PAST SIX HOURS. ANIMATED ENHANCED INFRARED SATELLITE IMAGERY 
SHOWS A COMPLETELY EXPOSED AND RAPIDLY DECAYING LOW-LEVEL CIRCULATION 
CENTER EMBEDDED WITHIN THE WIDESPREAD STRATOCUMULUS FIELD DISLOCATED 
FROM THE REMAINING CONVECTIVE STRUCTURE TO THE SOUTHEAST. THE SYSTEM 
IS EXPECTED TO DISSIPATE UNDER STRONG NORTHERLY VERTICAL WIND SHEAR OF 
30-35 KTS, WHILE COOL SEA SURFACE TEMPERATURES OF 24-26 C PRESENT AN 
INCREASINGLY NON-CONDUCIVE ENVIRONMENT FOR FURTHER TC SUSTAINMENT. A 
241210Z 37 GHZ SSMIS MICROWAVE IMAGE DEPICTS A COMPLETELY DISLOCATED 
LLCC FROM A RAPIDLY COLLAPSING CONVECTIVE STRUCTURE AS TC 18S 
CONTINUES SOUTHWESTWARD INTO THE MID-LATITUDE BAROCLINIC ZONE. THE TC 
IS EXPECTED TO WEAKEN TO LESS THAN 35 KTS OVER 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 241200Z IS 1002 MB. 
MAXIMUM SIGNIFICANT WAVE HEIGHT AT 241200Z IS 15 FEET.//
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