WTXS32 PGTW 100300
MSGID/GENADMIN/JOINT TYPHOON WRNCEN PEARL HARBOR HI//
SUBJ/TROPICAL CYCLONE 27S (ODETTE) WARNING NR 021//
RMKS/
1. TROPICAL CYCLONE 27S (ODETTE) WARNING NR 021    
   02 ACTIVE TROPICAL CYCLONES IN SOUTHIO
   MAX SUSTAINED WINDS BASED ON ONE-MINUTE AVERAGE
   WIND RADII VALID OVER OPEN WATER ONLY
    ---
   WARNING POSITION:
   100000Z --- NEAR 18.9S 112.8E
     MOVEMENT PAST SIX HOURS - 165 DEGREES AT 19 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 - 065 NM NORTHEAST QUADRANT
                            055 NM SOUTHEAST QUADRANT
                            225 NM SOUTHWEST QUADRANT
                            050 NM NORTHWEST QUADRANT
   REPEAT POSIT: 18.9S 112.8E
    ---
   FORECASTS:
   12 HRS, VALID AT:
   101200Z --- 21.9S 111.9E
   MAX SUSTAINED WINDS - 030 KT, GUSTS 040 KT
   WIND RADII VALID OVER OPEN WATER ONLY
   DISSIPATED AS A SIGNIFICANT TROPICAL CYCLONE OVER WATER
   VECTOR TO 24 HR POSIT: 210 DEG/ 09 KTS
    ---
   24 HRS, VALID AT:
   110000Z --- 23.4S 110.9E
   MAX SUSTAINED WINDS - 020 KT, GUSTS 030 KT
   WIND RADII VALID OVER OPEN WATER ONLY
   DISSIPATED AS A SIGNIFICANT TROPICAL CYCLONE OVER WATER
    ---
REMARKS:
100300Z POSITION NEAR 19.7S 112.6E.
10APR21. TROPICAL CYCLONE (TC) 27S (ODETTE), LOCATED APPROXIMATELY 
217 NM NORTH-NORTHWEST OF LEARMONTH, AUSTRALIA, HAS TRACKED SOUTH-
SOUTHEASTWARD AT 19 KNOTS OVER THE PAST SIX HOURS. TC 27S IS 
CURRENTLY UNDERGOING FUJIWHARA INTERACTION WITH TC 26S. ANIMATED 
MULTISPECTRAL SATELLITE IMAGERY (MSI) DEPICTS A WELL DEFINED BUT 
RAPIDLY DECAYING AND EXPOSED LOW LEVEL CIRCULATION. THE INITIAL 
POSITION IS BASED ON THE PREVIOUSLY MENTIONED MSI AND THE INITIAL 
INTENSITY OF 35 KTS IS HEDGED SLIGHTLY HIGHER THAN THE PGTW DVORAK 
CURRENT INTENSITY ESTIMATE OF 2.0 (30 KTS). UPPER-LEVEL ANALYSIS 
REVEALS A MARGINAL ENVIRONMENT DUE TO THE PROXIMITY TO TC 26S WHICH 
IS CREATING MODERATE TO HIGH VERTICAL WIND SHEAR (15-25 KTS) AND 
SUPPRESSING OUTFLOW. TC 27S IS CURRENTLY ROTATING CYCLONICALLY 
AROUND THE EASTERN PERIPHERY OF TC 26S AND IS EXPECTED TO COMPLETE 
THE FUJIWHARA INTERACTION AS IT BECOMES ABSORBED IN TC 26S WITH 
DISSIPATION EXPECTED BY TAU 12. NUMERICAL MODEL GUIDANCE IS IN FAIR 
AGREEMENT WITH THIS COMPLEX SCENARIO AND SUPPORTS THE JTWC FORECAST 
TRACK WITH MODERATE CONFIDENCE. MAXIMUM SIGNIFICANT WAVE HEIGHT AT 
100000Z IS 12 FEET. NEXT WARNINGS AT 100900Z, 101500Z AND 102100Z.
REFER TO TROPICAL CYCLONE 26S (SEROJA) WARNINGS (WTXS31 PGTW)
FOR SIX-HOURLY UPDATES.//
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