WTXS31 PGTW 110900 MSGID/GENADMIN/JOINT TYPHOON WRNCEN PEARL HARBOR HI// SUBJ/TROPICAL CYCLONE 02S (BONGOYO) WARNING NR 009// RMKS/ 1. TROPICAL CYCLONE 02S (BONGOYO) WARNING NR 009 02 ACTIVE TROPICAL CYCLONES IN SOUTHIO MAX SUSTAINED WINDS BASED ON ONE-MINUTE AVERAGE WIND RADII VALID OVER OPEN WATER ONLY --- WARNING POSITION: 110600Z --- NEAR 21.7S 74.3E MOVEMENT PAST SIX HOURS - 280 DEGREES AT 06 KTS POSITION ACCURATE TO WITHIN 045 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 - 130 NM NORTHEAST QUADRANT 100 NM SOUTHEAST QUADRANT 000 NM SOUTHWEST QUADRANT 000 NM NORTHWEST QUADRANT REPEAT POSIT: 21.7S 74.3E --- FORECASTS: 12 HRS, VALID AT: 111800Z --- 21.5S 71.9E MAX SUSTAINED WINDS - 030 KT, GUSTS 040 KT WIND RADII VALID OVER OPEN WATER ONLY DISSIPATED AS A SIGNIFICANT TROPICAL CYCLONE OVER WATER --- REMARKS: 110900Z POSITION NEAR 21.6S 73.7E. 11DEC20. TROPICAL CYCLONE (TC) 02S (BONGOYO), LOCATED APPROXIMATELY 957 NM EAST OF PORT LOUIS, MAURITIUS, HAS TRACKED WESTWARD AT 06 KNOTS OVER THE PAST SIX HOURS. ANIMATED MULTISPECTRAL SATELLITE IMAGERY DEPICTS A BROAD, FULLY-EXPOSED LOW-LEVEL CIRCULATION EMBEDDED WITHIN A STRATOCUMULUS FIELD WITH NO DEEP CONVECTION. A 110434Z AMSU 89GHZ MICROWAVE IMAGE REVEALS A WEAKLY DEFINED SYSTEM SURROUNDED BY DRY AIR. A 110435Z ASCAT-B IMAGE SHOWS A DEFINED CIRCULATION WITH 30-35 KNOT GRADIENT WINDS OVER THE SOUTHERN SEMICIRCLE AND LESS THAN 25 KNOT WINDS ELSEWHERE. THE INITIAL INTENSITY IS ASSESSED AT 35 KNOTS BASED ON THE ASCAT DATA. TC 02S IS WEAKENING RAPIDLY DUE TO STRONG VERTICAL WIND SHEAR AND COOL SST (24- 25C) AS DEPICTED IN MICROWAVE AND ASCAT IMAGERY. THE SYSTEM IS FORECAST TO DISSIPATE BY TAU 12 AS IT TRACKS SLOWLY WESTWARD UNDER THE STEERING INFLUENCE OF THE LOW-LEVEL RIDGE TO THE SOUTH. NUMERICAL MODEL GUIDANCE SUPPORTS THE JTWC FORECAST TRACK WITH HIGH CONFIDENCE. 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 110600Z IS 13 FEET. REFER TO TROPICAL CYCLONE 03S (THREE) FINAL WARNING (WTXS32 PGTW).// NNNN