WTXS32 PGTW 011500 MSGID/GENADMIN/JOINT TYPHOON WRNCEN PEARL HARBOR HI// SUBJ/TROPICAL CYCLONE 22S (HALIMA) WARNING NR 019// RMKS/ 1. TROPICAL CYCLONE 22S (HALIMA) WARNING NR 019 01 ACTIVE TROPICAL CYCLONE IN SOUTHIO MAX SUSTAINED WINDS BASED ON ONE-MINUTE AVERAGE WIND RADII VALID OVER OPEN WATER ONLY --- WARNING POSITION: 011200Z --- NEAR 19.3S 84.5E MOVEMENT PAST SIX HOURS - 315 DEGREES AT 01 KTS POSITION ACCURATE TO WITHIN 020 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 REPEAT POSIT: 19.3S 84.5E --- FORECASTS: 12 HRS, VALID AT: 020000Z --- 19.2S 84.2E 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: 270 DEG/ 04 KTS --- 24 HRS, VALID AT: 021200Z --- 19.2S 83.3E MAX SUSTAINED WINDS - 030 KT, GUSTS 040 KT WIND RADII VALID OVER OPEN WATER ONLY DISSIPATED AS A SIGNIFICANT TROPICAL CYCLONE OVER WATER --- REMARKS: 011500Z POSITION NEAR 19.3S 84.4E. 01APR22. TROPICAL CYCLONE 22S (HALIMA), LOCATED APPROXIMATELY 1012 NM SOUTHEAST OF DIEGO GARCIA, HAS TRACKED NORTHWESTWARD AT 01 KNOT OVER THE PAST SIX HOURS. ANIMATED MULTISPECTRAL SATELLITE IMAGERY (MSI) SHOWS THE LOW LEVEL CIRCULATION (LLC) HAS BECOME FULLY EXPOSED AS THE ASSOCIATED CONVECTION AND CIRRUS CANOPY HAS SHEARED FURTHER SOUTHEASTWARD. THE INITIAL POSITION IS PLACED WITH HIGH CONFIDENCE BASED ON THE EXPOSED LLC IN THE MSI LOOP THAT LINED UP WELL WITH A DEFINED LLC IN THE 011101Z GPM MICROWAVE IMAGE. THE INITIAL INTENSITY OF 35KTS IS BASED ON THE HIGH END OF DVORAK ESTIMATES FROM PGTW 2.5/35KTS, ADT 2.0/30KTS, AND SATCON 34KTS. ANALYSIS INDICATES AN UNFAVORABLE ENVIRONMENT WITH WARM (27-28C) SST AND STRONG POLEWARD OUTFLOW OFFSET BY STRONG (25KT+) RELATIVE VERTICAL WIND SHEAR AND COLD DRY AIR INTRUSION AT THE LOW LEVELS. TC HALIMA IS EXPECTED TO COMPLETE ITS U-TURN AND TRACK WESTWARD UNDER THE STEERING INFLUENCE OF THE SUBTROPICAL RIDGE TO THE SOUTHWEST AND WEAKEN TO BELOW WARNING CRITERIA BY TAU 12. 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. MAXIMUM SIGNIFICANT WAVE HEIGHT AT 011200Z IS 12 FEET. NNNN