WTXS31 PGTW 152100 MSGID/GENADMIN/JOINT TYPHOON WRNCEN PEARL HARBOR HI// SUBJ/TROPICAL CYCLONE 12S (DUMAKO) WARNING NR 006// RMKS/ 1. TROPICAL CYCLONE 12S (DUMAKO) 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: 151800Z --- NEAR 17.1S 48.4E MOVEMENT PAST SIX HOURS - 265 DEGREES AT 11 KTS POSITION ACCURATE TO WITHIN 060 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 LAND REPEAT POSIT: 17.1S 48.4E --- FORECASTS: 12 HRS, VALID AT: 160600Z --- 16.8S 46.1E MAX SUSTAINED WINDS - 025 KT, GUSTS 035 KT WIND RADII VALID OVER OPEN WATER ONLY DISSIPATED AS A SIGNIFICANT TROPICAL CYCLONE OVER LAND VECTOR TO 24 HR POSIT: 275 DEG/ 11 KTS --- 24 HRS, VALID AT: 161800Z --- 16.6S 43.9E MAX SUSTAINED WINDS - 025 KT, GUSTS 035 KT WIND RADII VALID OVER OPEN WATER ONLY DISSIPATED AS A SIGNIFICANT TROPICAL CYCLONE OVER WATER --- REMARKS: 152100Z POSITION NEAR 17.0S 47.8E. 15FEB22. TROPICAL CYCLONE (TC) 12S (DUMAKO), LOCATED APPROXIMATELY 120 NM NORTH-NORTHEAST OF ANTANANARIVO, MADAGASCAR, HAS TRACKED WESTWARD AT 11 KNOTS OVER THE PAST SIX HOURS. TC 12S MADE LANDFALL AT 151200Z AND IS NOW TRACKING OVER MOUNTAINOUS TERRAIN. ANIMATED ENHANCED INFRARED SATELLITE IMAGERY (EIR) AND A 151541Z SSMIS 91GHZ MICROWAVE IMAGE DEPICT RAPID WEAKENING WITH A PARTIALLY EXPOSED LOW LEVEL CIRCULATION CENTER (LLCC) AND WEAK BANDING OVER THE SOUTHERN AND WESTERN PERIPHERIES. THE SYSTEM IS FORECAST TO TRACK GENERALLY WESTWARD UNDER THE STEERING INFLUENCE OF THE LOW-MID LEVEL SUBTROPICAL RIDGE (STR) POSITIONED TO THE SOUTH. TC 12S IS EXPECTED TO QUICKLY DISSIPATE WITH THE REMNANTS TRACKING OVER WATER NEAR TAU 24. THE SYSTEM IS NOT EXPECTED TO REDEVELOP OVER THE MOZAMBIQUE CHANNEL. 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.// NNNN