WTXS31 PGTW 300900 MSGID/GENADMIN/JOINT TYPHOON WRNCEN PEARL HARBOR HI// SUBJ/TROPICAL CYCLONE 07S (CHALANE) WARNING NR 012// RMKS/ 1. TROPICAL CYCLONE 07S (CHALANE) WARNING NR 012 01 ACTIVE TROPICAL CYCLONE IN SOUTHIO MAX SUSTAINED WINDS BASED ON ONE-MINUTE AVERAGE WIND RADII VALID OVER OPEN WATER ONLY --- WARNING POSITION: 300600Z --- NEAR 19.4S 34.6E MOVEMENT PAST SIX HOURS - 260 DEGREES AT 14 KTS POSITION ACCURATE TO WITHIN 020 NM POSITION BASED ON CENTER LOCATED BY A COMBINATION OF SATELLITE AND SYNOPTIC DATA PRESENT WIND DISTRIBUTION: MAX SUSTAINED WINDS - 045 KT, GUSTS 055 KT WIND RADII VALID OVER OPEN WATER ONLY DISSIPATING AS A SIGNIFICANT TROPICAL CYCLONE OVER LAND RADIUS OF 034 KT WINDS - 055 NM NORTHEAST QUADRANT 075 NM SOUTHEAST QUADRANT 055 NM SOUTHWEST QUADRANT 040 NM NORTHWEST QUADRANT REPEAT POSIT: 19.4S 34.6E --- FORECASTS: 12 HRS, VALID AT: 301800Z --- 19.6S 31.7E MAX SUSTAINED WINDS - 030 KT, GUSTS 040 KT WIND RADII VALID OVER OPEN WATER ONLY DISSIPATED AS A SIGNIFICANT TROPICAL CYCLONE OVER LAND VECTOR TO 24 HR POSIT: 260 DEG/ 15 KTS --- 24 HRS, VALID AT: 310600Z --- 20.1S 28.5E MAX SUSTAINED WINDS - 020 KT, GUSTS 030 KT WIND RADII VALID OVER OPEN WATER ONLY DISSIPATED AS A SIGNIFICANT TROPICAL CYCLONE OVER LAND --- REMARKS: 300900Z POSITION NEAR 19.5S 33.9E. 30DEC20. TROPICAL CYCLONE 07S (CHALANE), LOCATED APPROXIMATELY 20 NM NORTH-NORTHWEST OF BEIRA, MOZAMBIQUE, HAS TRACKED WESTWARD AT 14 KNOTS OVER THE PAST SIX HOURS. ANIMATED MULTISPECTRAL SATELLITE IMAGERY SHOWS THE SYSTEM HAS RAPIDLY ERODED AFTER IT MADE LANDFALL ALONG THE EASTERN COAST OF NORTHERN MOZAMBIQUE. THE INITIAL POSITION IS PLACED WITH HIGH CONFIDENCE BASED ON A DEFINED LOW LEVEL CIRCULATION FEATURE IN THE 300410Z 37GHZ SSMIS MICROWAVE IMAGE AND TRIANGULATED FROM NEARBY SURFACE OBSERVATIONS. THE INITIAL INTENSITY OF 45KTS IS EXTRAPOLATED FROM THE MAXIMUM WIND OBSERVATION FROM BEIRA AIRPORT OF SE/38KTS AT 300300Z WHEN THE TC WAS WITHIN 20NM. TC CHALANE WILL CONTINUE TO RAPIDLY ERODE AS IT DRAGS ACROSS THE RUGGED TERRAIN, LEADING TO DISSIPATION BY TAU 12 AFTER IT CROSSES INTO ZIMBABWE. 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