Tropical
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Tropical Cyclone FUNDI Southern Hemisphere Summary |
WTXS21 PGTW 20150206 09:00z MSGID/GENADMIN/JOINT TYPHOON WRNCEN PEARL HARBOR HI// SUBJ/TROPICAL CYCLONE FORMATION ALERT// RMKS/ 1. FORMATION OF A SIGNIFICANT TROPICAL CYCLONE IS POSSIBLE WITHIN 120 NM EITHER SIDE OF A LINE FROM 20.7S 41.2E TO 24.9S 43.9E WITHIN THE NEXT 12 TO 24 HOURS. AVAILABLE DATA DOES NOT JUSTIFY ISSUANCE OF NUMBERED TROPICAL CYCLONE WARNINGS AT THIS TIME. WINDS IN THE AREA ARE ESTIMATED TO BE 27 TO 32 KNOTS. METSAT IMAGERY AT 060600Z INDICATES THAT A CIRCULATION CENTER IS LOCATED NEAR 21.4S 41.6E. THE SYSTEM IS MOVING EAST-SOUTHEASTWARD AT 05 KNOTS. 2. REMARKS: THE AREA OF CONVECTION PREVIOUSLY LOCATED NEAR 20.0S 38.9E, IS NOW LOCATED NEAR 21.4S 41.6E, APPROXIMATELY 340 NM WEST- SOUTHWEST OF ANTANANARIVO, MADAGASCAR. ANIMATED MULTISPECTRAL SATELLITE IMAGERY (MSI) CONTINUES TO SHOW A MORE DEVELOPED CIRCULATION AND BETTER CONVECTION, AS WELL AS SOME POSSIBLE LIGHT BANDING, ASSOCIATED WITH THIS SYSTEM. THE LOW-LEVEL CIRCULATION CENTER (LLCC) IS CONCEALED BY THE HEAVY CONVECTIVE SIGNATURE ON THE EASTERN SIDE OF THE SYSTEM AS SEEN IN THE 060429Z SSMIS, MID-LEVEL TURNING IS CLEARLY EVIDENT IN THE MSI. ADDITIONALLY, AN EARLIER 060228Z ISS RSCAT SHOWS THE MAJORITY OF INTENSE (25 TO 30 KTS) WINDS ARE LOCATED IN THE NORTHEASTERN QUADRANT WITH FAIRLY WEAK FLOW (10 TO 15 KTS) ALONG THE SOUTHWESTERN SIDE. THERE IS MODERATE (20 KTS) SOUTHWESTERLY VERTICAL WIND SHEAR WHICH IS OFFSET BY GOOD DIVERGENT OUTFLOW AND GOOD SSTS, LEADING TO AN OVERALL CONDUCIVE ENVIRONMENT FOR FURTHER DEVELOPMENT. NUMERIC DYNAMIC MODELS ARE IN GOOD AGREEMENT OF A TROPICAL CYCLONE STRENGTH SYSTEM DEVELOPING FROM THIS SYSTEM WITHIN THE NEXT 24 HOURS. FOR THE AFOREMENTIONED REASONS, THE POTENTIAL FOR THE DEVELOPMENT OF A SIGNIFICANT TROPICAL CYCLONE WITHIN THE NEXT 24 HOURS IS HIGH. 3. THIS ALERT WILL BE REISSUED, UPGRADED TO WARNING OR CANCELLED BY 070900Z.// ========================================================================= WTXS31 PGTW 20150206 21:00z MSGID/GENADMIN/JOINT TYPHOON WRNCEN PEARL HARBOR HI// SUBJ/TROPICAL CYCLONE 11S (FUNDI) WARNING NR 001// REF/A/JOINT TYPHOON WRNCEN PEARL HARBOR HI/060851Z FEB 15// AMPN/REF A IS A TROPICAL CYCLONE FORMATION ALERT// RMKS/ 1. TROPICAL CYCLONE 11S (FUNDI) WARNING NR 001 01 ACTIVE TROPICAL CYCLONE IN SOUTHIO MAX SUSTAINED WINDS BASED ON ONE-MINUTE AVERAGE WIND RADII VALID OVER OPEN WATER ONLY --- WARNING POSITION: 061800Z --- NEAR 22.8S 42.9E MOVEMENT PAST SIX HOURS - 150 DEGREES AT 09 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 REPEAT POSIT: 22.8S 42.9E --- FORECASTS: 12 HRS, VALID AT: 070600Z --- 23.9S 43.5E MAX SUSTAINED WINDS - 040 KT, GUSTS 050 KT WIND RADII VALID OVER OPEN WATER ONLY RADIUS OF 034 KT WINDS - 040 NM NORTHEAST QUADRANT 035 NM SOUTHEAST QUADRANT 030 NM SOUTHWEST QUADRANT 040 NM NORTHWEST QUADRANT VECTOR TO 24 HR POSIT: 165 DEG/ 07 KTS --- 24 HRS, VALID AT: 071800Z --- 25.2S 43.9E MAX SUSTAINED WINDS - 045 KT, GUSTS 055 KT WIND RADII VALID OVER OPEN WATER ONLY RADIUS OF 034 KT WINDS - 045 NM NORTHEAST QUADRANT 040 NM SOUTHEAST QUADRANT 035 NM SOUTHWEST QUADRANT 045 NM NORTHWEST QUADRANT VECTOR TO 36 HR POSIT: 175 DEG/ 10 KTS --- 36 HRS, VALID AT: 080600Z --- 27.1S 44.1E MAX SUSTAINED WINDS - 050 KT, GUSTS 065 KT WIND RADII VALID OVER OPEN WATER ONLY RADIUS OF 034 KT WINDS - 050 NM NORTHEAST QUADRANT 045 NM SOUTHEAST QUADRANT 040 NM SOUTHWEST QUADRANT 040 NM NORTHWEST QUADRANT VECTOR TO 48 HR POSIT: 185 DEG/ 10 KTS --- EXTENDED OUTLOOK: 48 HRS, VALID AT: 081800Z --- 29.1S 43.9E MAX SUSTAINED WINDS - 055 KT, GUSTS 070 KT WIND RADII VALID OVER OPEN WATER ONLY RADIUS OF 050 KT WINDS - 020 NM NORTHEAST QUADRANT 020 NM SOUTHEAST QUADRANT 020 NM SOUTHWEST QUADRANT 020 NM NORTHWEST QUADRANT RADIUS OF 034 KT WINDS - 055 NM NORTHEAST QUADRANT 055 NM SOUTHEAST QUADRANT 045 NM SOUTHWEST QUADRANT 045 NM NORTHWEST QUADRANT VECTOR TO 72 HR POSIT: 215 DEG/ 12 KTS --- 72 HRS, VALID AT: 091800Z --- 32.8S 40.6E MAX SUSTAINED WINDS - 045 KT, GUSTS 055 KT WIND RADII VALID OVER OPEN WATER ONLY BECOMING EXTRATROPICAL RADIUS OF 034 KT WINDS - 055 NM NORTHEAST QUADRANT 055 NM SOUTHEAST QUADRANT 045 NM SOUTHWEST QUADRANT 045 NM NORTHWEST QUADRANT VECTOR TO 96 HR POSIT: 185 DEG/ 07 KTS --- LONG RANGE OUTLOOK: --- 96 HRS, VALID AT: 101800Z --- 35.6S 40.3E MAX SUSTAINED WINDS - 035 KT, GUSTS 045 KT WIND RADII VALID OVER OPEN WATER ONLY BECOMING EXTRATROPICAL VECTOR TO 120 HR POSIT: 130 DEG/ 19 KTS --- 120 HRS, VALID AT: 111800Z --- 40.4S 48.0E MAX SUSTAINED WINDS - 040 KT, GUSTS 050 KT WIND RADII VALID OVER OPEN WATER ONLY EXTRATROPICAL --- REMARKS: 062100Z POSITION NEAR 23.1S 43.0E. TROPICAL CYCLONE (TC) 11S (FUNDI), LOCATED APPROXIMATELY 315 NM SOUTHWEST OF ANTANANARIVO, MADAGASCAR HAS TRACKED SOUTH-SOUTHEASTWARD AT 09 KNOTS OVER THE PAST SIX HOURS. ANIMATED ENHANCED INFRARED (EIR) SATELLITE IMAGERY SHOWS WELL DEFINED CONVECTIVE BANDING WRAPPING INTO THE LOW LEVEL CIRCULATION CENTER (LLCC). A 061701Z SSMIS MICROWAVE IMAGE REVEALS THAT THE BANDING HAS EXPANDED TO THE SOUTHERN QUADRANT OF THE SYSTEM AND HAS STARTED TO WRAP AROUND THE CENTER. UPPER LEVEL ANALYSIS INDICATES THAT TC FUNDI IS IN A MARGINALLY FAVORABLE ENVIRONMENT, LOCATED JUST SOUTH OF THE RIDGE AXIS IN AN AREA OF STRONG DIVERGENCE WITH GOOD EQUATORWARD OUTFLOW. HOWEVER MODERATE (20 KNOTS) VERTICAL WIND SHEAR (VWS) AND SUBSIDENCE FROM A SHORT WAVE TROUGH TO THE WEST WILL LIMIT OVERALL INTENSIFICATION. THE INITIAL POSITION IS BASED ON THE EIR LOOP AND MICROWAVE IMAGERY WITH GOOD CONFIDENCE. THE INITIAL INTENSITY OF 35 KNOTS IS BASED ON THE HIGH END OF AGENCY DVORAK INTENSITY ESTIMATES OF 30 TO 35 KNOTS. TC 11S IS TRACKING UNDER THE STEERING INFLUENCE OF A LOW- TO MID-LEVEL SUB-TROPICAL RIDGE (STR) TO THE EAST. AS TC FUNDI TRACKS POLEWARD THROUGH TAU 48, ENVIRONMENTAL CONDITIONS WILL REMAIN MODERATELY FAVORABLE ALLOWING THE SYSTEM TO REACH A PEAK INTENSITY OF 55 KNOTS. BEYOND TAU 48 THE CYCLONE WILL TURN TO THE SOUTHWEST AS THE STR BUILDS IN TO THE SOUTH. AT THIS POINT, TC FUNDI WILL BEGIN ITS WEAKENING TREND AS IT ENCOUNTERS INCREASED VWS AND COOLER SSTS (BELOW 26C). BY TAU 72, TC 11S WILL START TO ROUND THE STR AXIS AND BEGIN EXTRA-TROPICAL TRANSITION (ETT). EXPECT THE SYSTEM TO COMPLETE ETT BY THE END OF THE FORECAST PERIOD. AVAILABLE MODEL GUIDANCE IS IN FAIR AGREEMENT THROUGH THE FORECAST PERIOD LENDING TO GOOD CONFIDENCE IN THE JTWC FORECAST. MAXIMUM SIGNIFICANT WAVE HEIGHT AT 061800Z IS 10 FEET. NEXT WARNINGS AT 070900Z AND 072100Z. THIS WARNING SUPERSEDES AND CANCELS REF A, JOINT TYPHOON WRNCEN PEARL HARBOR HI 060851Z FEB 15 (WTXS21 PGTW 060900)// ========================================================================= WTXS31 PGTW 20150207 09:00z MSGID/GENADMIN/JOINT TYPHOON WRNCEN PEARL HARBOR HI// SUBJ/TROPICAL CYCLONE 11S (FUNDI) WARNING NR 002// RMKS/ 1. TROPICAL CYCLONE 11S (FUNDI) WARNING NR 002 01 ACTIVE TROPICAL CYCLONE IN SOUTHIO MAX SUSTAINED WINDS BASED ON ONE-MINUTE AVERAGE WIND RADII VALID OVER OPEN WATER ONLY --- WARNING POSITION: 070600Z --- NEAR 23.5S 43.6E MOVEMENT PAST SIX HOURS - 140 DEGREES AT 05 KTS POSITION ACCURATE TO WITHIN 025 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 REPEAT POSIT: 23.5S 43.6E --- FORECASTS: 12 HRS, VALID AT: 071800Z --- 25.0S 44.0E MAX SUSTAINED WINDS - 040 KT, GUSTS 050 KT WIND RADII VALID OVER OPEN WATER ONLY RADIUS OF 034 KT WINDS - 035 NM NORTHEAST QUADRANT 035 NM SOUTHEAST QUADRANT 040 NM SOUTHWEST QUADRANT 040 NM NORTHWEST QUADRANT VECTOR TO 24 HR POSIT: 180 DEG/ 12 KTS --- 24 HRS, VALID AT: 080600Z --- 27.4S 44.0E MAX SUSTAINED WINDS - 050 KT, GUSTS 065 KT WIND RADII VALID OVER OPEN WATER ONLY RADIUS OF 034 KT WINDS - 045 NM NORTHEAST QUADRANT 040 NM SOUTHEAST QUADRANT 035 NM SOUTHWEST QUADRANT 045 NM NORTHWEST QUADRANT VECTOR TO 36 HR POSIT: 195 DEG/ 14 KTS --- 36 HRS, VALID AT: 081800Z --- 30.2S 43.2E MAX SUSTAINED WINDS - 045 KT, GUSTS 055 KT WIND RADII VALID OVER OPEN WATER ONLY RADIUS OF 034 KT WINDS - 050 NM NORTHEAST QUADRANT 045 NM SOUTHEAST QUADRANT 040 NM SOUTHWEST QUADRANT 040 NM NORTHWEST QUADRANT VECTOR TO 48 HR POSIT: 220 DEG/ 13 KTS --- EXTENDED OUTLOOK: 48 HRS, VALID AT: 090600Z --- 32.1S 41.2E MAX SUSTAINED WINDS - 040 KT, GUSTS 050 KT WIND RADII VALID OVER OPEN WATER ONLY RADIUS OF 034 KT WINDS - 055 NM NORTHEAST QUADRANT 055 NM SOUTHEAST QUADRANT 045 NM SOUTHWEST QUADRANT 045 NM NORTHWEST QUADRANT VECTOR TO 72 HR POSIT: 225 DEG/ 07 KTS --- 72 HRS, VALID AT: 100600Z --- 34.0S 38.7E MAX SUSTAINED WINDS - 035 KT, GUSTS 045 KT WIND RADII VALID OVER OPEN WATER ONLY BECOMING EXTRATROPICAL VECTOR TO 96 HR POSIT: 145 DEG/ 10 KTS --- LONG RANGE OUTLOOK: --- 96 HRS, VALID AT: 110600Z --- 37.1S 41.7E MAX SUSTAINED WINDS - 030 KT, GUSTS 040 KT WIND RADII VALID OVER OPEN WATER ONLY EXTRATROPICAL --- REMARKS: 070900Z POSITION NEAR 23.9S 43.7E. TROPICAL CYCLONE (TC) 11S (FUNDI), LOCATED APPROXIMATELY 330 NM SOUTHWEST OF ANTANANARIVO, MADAGASCAR, HAS TRACKED SOUTHEASTWARD AT 05 KNOTS OVER THE PAST SIX HOURS. ANIMATED MULTISPECTRAL SATELLITE IMAGERY (MSI) DEPICTS TIGHTLY-CURVED BANDING WRAPPING INTO THE LOW LEVEL CIRCULATION CENTER (LLCC) STRADDLING EASTERN COAST OF MADAGASCAR. A 070417Z SSMIS MICROWAVE IMAGE REVEALS THE BULK OF THE CONVECTIVE BANDING OVER THE NORTHEASTERN QUADRANT WRAPPING INTO THE LLCC. UPPER-LEVEL ANALYSIS INDICATES THAT TC 11S IS LOCATED IN AN AREA OF MODERATE (10 TO 20 KNOT) VERTICAL WIND SHEAR OFFSET BY GOOD POLEWARD OUTFLOW. THE INITIAL POSITION IS BASED ON THE MSI AND SATELLITE FIXES FROM PGTW, KNES AND FMEE WITH GOOD CONFIDENCE. DVORAK VALUES ARE UNAVAILABLE DUE TO THE LLCC PROXIMITY TO LAND; THEREFORE, THE INITIAL INTENSITY REMAINS AT 35 KNOTS BASED ON THE OVERALL STRUCTURE AS IT INTERACTS WITH THE COASTLINE AND SATELLITE CONSENSUS (SATCON) OF 32 KNOTS. TC FUNDI IS TRACKING UNDER THE STEERING INFLUENCE OF A LOW- TO MID-LEVEL SUB-TROPICAL RIDGE (STR) TO THE EAST. MARGINALLY FAVORABLE CONDITIONS ARE EXPECTED TO PERSIST ALLOWING TC 11S TO SLOWLY INTENSIFY REACHING A PEAK INTENSITY OF 50 KNOTS OVER THE NEXT 24 HOURS. AFTER TAU 24, THE CYCLONE WILL TURN SOUTHWESTWARD AS THE STR BUILDS IN TO THE SOUTH. CONCURRENTLY, TC 11S WILL BEGIN ITS WEAKENING TREND AS IT ENCOUNTERS INCREASED VWS AND COOLER SEA SURFACE TEMPERATURES. BY TAU 72, TC 11S WILL START TO ROUND THE STR AXIS AND BEGIN EXTRA- TROPICAL TRANSITION (ETT). TC 11S IS FORECAST TO COMPLETE ETT BY THE END OF THE FORECAST PERIOD. AVAILABLE MODEL GUIDANCE REMAINS IN GOOD AGREEMENT LENDING TO HIGH CONFIDENCE IN JTWC TRACK FORECAST. MAXIMUM SIGNIFICANT WAVE HEIGHT AT 070600Z IS 10 FEET. NEXT WARNINGS AT 072100Z AND 080900Z.// ========================================================================= WTXS31 PGTW 20150207 21:00z MSGID/GENADMIN/JOINT TYPHOON WRNCEN PEARL HARBOR HI// SUBJ/TROPICAL CYCLONE 11S (FUNDI) WARNING NR 003// RMKS/ 1. TROPICAL CYCLONE 11S (FUNDI) WARNING NR 003 01 ACTIVE TROPICAL CYCLONE IN SOUTHIO MAX SUSTAINED WINDS BASED ON ONE-MINUTE AVERAGE WIND RADII VALID OVER OPEN WATER ONLY --- WARNING POSITION: 071800Z --- NEAR 25.6S 43.5E MOVEMENT PAST SIX HOURS - 165 DEGREES AT 09 KTS POSITION ACCURATE TO WITHIN 025 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 REPEAT POSIT: 25.6S 43.5E --- FORECASTS: 12 HRS, VALID AT: 080600Z --- 27.9S 43.6E MAX SUSTAINED WINDS - 045 KT, GUSTS 055 KT WIND RADII VALID OVER OPEN WATER ONLY RADIUS OF 034 KT WINDS - 035 NM NORTHEAST QUADRANT 035 NM SOUTHEAST QUADRANT 040 NM SOUTHWEST QUADRANT 040 NM NORTHWEST QUADRANT VECTOR TO 24 HR POSIT: 195 DEG/ 14 KTS --- 24 HRS, VALID AT: 081800Z --- 30.7S 42.8E MAX SUSTAINED WINDS - 050 KT, GUSTS 065 KT WIND RADII VALID OVER OPEN WATER ONLY RADIUS OF 034 KT WINDS - 045 NM NORTHEAST QUADRANT 040 NM SOUTHEAST QUADRANT 035 NM SOUTHWEST QUADRANT 040 NM NORTHWEST QUADRANT VECTOR TO 36 HR POSIT: 215 DEG/ 12 KTS --- 36 HRS, VALID AT: 090600Z --- 32.7S 41.1E MAX SUSTAINED WINDS - 045 KT, GUSTS 055 KT WIND RADII VALID OVER OPEN WATER ONLY RADIUS OF 034 KT WINDS - 050 NM NORTHEAST QUADRANT 045 NM SOUTHEAST QUADRANT 040 NM SOUTHWEST QUADRANT 040 NM NORTHWEST QUADRANT VECTOR TO 48 HR POSIT: 230 DEG/ 11 KTS --- EXTENDED OUTLOOK: 48 HRS, VALID AT: 091800Z --- 34.1S 39.2E MAX SUSTAINED WINDS - 040 KT, GUSTS 050 KT WIND RADII VALID OVER OPEN WATER ONLY DISSIPATING AS A SIGNIFICANT TROPICAL CYCLONE OVER WATER RADIUS OF 034 KT WINDS - 055 NM NORTHEAST QUADRANT 055 NM SOUTHEAST QUADRANT 045 NM SOUTHWEST QUADRANT 045 NM NORTHWEST QUADRANT VECTOR TO 72 HR POSIT: 235 DEG/ 03 KTS --- 72 HRS, VALID AT: 101800Z --- 34.8S 37.9E MAX SUSTAINED WINDS - 030 KT, GUSTS 040 KT WIND RADII VALID OVER OPEN WATER ONLY DISSIPATED AS A SIGNIFICANT TROPICAL CYCLONE OVER WATER --- REMARKS: 072100Z POSITION NEAR 26.2S 43.5E. TROPICAL CYCLONE 11S (FUNDI), LOCATED APPROXIMATELY 435 NM SOUTH-SOUTHWEST OF ANTANANARIVO, MADAGASCAR, HAS TRACKED SOUTH-SOUTHEASTWARD AT 09 KNOTS OVER THE PAST SIX HOURS. ANIMATED ENHANCED INFRARED SATELLITE IMAGERY REVEALS THAT TC FUNDI HAS MOVED JUST SOUTH OF MADAGASCAR PROVIDING INCREASED INFLOW AND REVIVED CONVECTION ALONG THE SOUTHERN PERIPHERY. A 071648Z SSMIS 91GHZ MICROWAVE IMAGE DEPICTS DEEP CURVED CONVECTION WRAPPING INTO THE LOW LEVEL CIRCULATION CENTER (LLCC). UPPER-LEVEL ANALYSIS INDICATES THAT TC 11S IS LOCATED IN AN AREA OF MODERATE WESTERLY (10 TO 20 KNOT) VERTICAL WIND SHEAR (VWS) WHICH IS BEING OFFSET BY GOOD POLEWARD AND EQUATORWARD OUTFLOW AS EVIDENT ON WATER VAPOR IMAGERY. THE INITIAL POSITION IS BASED ON THE AFOREMENTIONED MICROWAVE IMAGE AND MULTI- AGENCY FIXES WITH GOOD CONFIDENCE. THE INITIAL INTENSITY OF 35 KNOTS IS BASED ON CONCURRING AGENCY CURRENT INTENSITY ESTIMATES OF 35 KNOTS. TC 11S IS STILL TRACKING UNDER THE INFLUENCE OF A LOW- TO MID- LEVEL SUB-TROPICAL RIDGE (STR) TO THE EAST. THIS STR WILL REMAIN THE DOMINANT STEERING MECHANISM THROUGH THE END OF THE FORECAST PERIOD. OVER THE NEXT 24 HOURS, TC FUNDI WILL UNDERGO SLIGHT INTENSIFICATION AS IT REMAINS IN 28C SEA SURFACE TEMPERATURES (SSTS) AND MOVES AWAY FROM LAND INTERACTION. BEYOND TAU 24 THE CYCLONE WILL UNDERGO A WEAKENING TREND AS IT ENCOUNTERS INCREASED VWS (20 TO 30 KNOTS) AND SSTS DROPPING BELOW 26C. TC FUNDI IS EXPECTED TO BEGIN DISSIPATION BY TAU 48 AND FULLY DISSIPATE BY TAU 72 PRIOR TO ENCOUNTERING THE MID-LATITUDE WESTERLIES. AVAILABLE MODEL GUIDANCE CONTINUES TO BE IN GOOD AGREEMENT LENDING TO HIGH CONFIDENCE IN JTWC TRACK FORECAST. MAXIMUM SIGNIFICANT WAVE HEIGHT AT 071800Z IS 12 FEET. NEXT WARNINGS AT 080900Z AND 082100Z.// ========================================================================= WTXS31 PGTW 20150208 09:00z MSGID/GENADMIN/JOINT TYPHOON WRNCEN PEARL HARBOR HI// SUBJ/TROPICAL CYCLONE 11S (FUNDI) WARNING NR 004// RMKS/ 1. TROPICAL CYCLONE 11S (FUNDI) WARNING NR 004 01 ACTIVE TROPICAL CYCLONE IN SOUTHIO MAX SUSTAINED WINDS BASED ON ONE-MINUTE AVERAGE WIND RADII VALID OVER OPEN WATER ONLY --- WARNING POSITION: 080600Z --- NEAR 28.0S 43.9E MOVEMENT PAST SIX HOURS - 170 DEGREES AT 13 KTS POSITION ACCURATE TO WITHIN 040 NM POSITION BASED ON CENTER LOCATED BY SATELLITE PRESENT WIND DISTRIBUTION: MAX SUSTAINED WINDS - 040 KT, GUSTS 050 KT WIND RADII VALID OVER OPEN WATER ONLY RADIUS OF 034 KT WINDS - 035 NM NORTHEAST QUADRANT 040 NM SOUTHEAST QUADRANT 030 NM SOUTHWEST QUADRANT 030 NM NORTHWEST QUADRANT REPEAT POSIT: 28.0S 43.9E --- FORECASTS: 12 HRS, VALID AT: 081800Z --- 30.9S 43.3E MAX SUSTAINED WINDS - 035 KT, GUSTS 045 KT WIND RADII VALID OVER OPEN WATER ONLY DISSIPATING AS A SIGNIFICANT TROPICAL CYCLONE OVER WATER VECTOR TO 24 HR POSIT: 215 DEG/ 13 KTS --- 24 HRS, VALID AT: 090600Z --- 33.0S 41.6E MAX SUSTAINED WINDS - 030 KT, GUSTS 040 KT WIND RADII VALID OVER OPEN WATER ONLY DISSIPATED AS A SIGNIFICANT TROPICAL CYCLONE OVER WATER --- REMARKS: 080900Z POSITION NEAR 28.7S 43.7E. TROPICAL CYCLONE 11S (FUNDI), LOCATED APPROXIMATELY 570 NM SOUTH- SOUTHWEST OF ANTANANARIVO, MADAGASCAR, HAS TRACKED SOUTHWARD AT 13 KNOTS OVER THE PAST SIX HOURS. ANIMATED MULTISPECTRAL SATELLITE IMAGERY (MSI) AND 080650Z METOP-B MICROWAVE IMAGE DEPICT THE BULK OF THE DEEP CONVECTION HAS DISPLACED SOUTHWEST OF THE LOW-LEVEL CIRCULATION CENTER. UPPER-LEVEL ANALYSIS INDICATES TC 11S IS NOW LOCATED IN AN AREA OF MODERATE TO HIGH (20 TO 30 KNOT) VERTICAL WIND SHEAR (VWS) WHICH IS BEING OFFSET BY EXCELLENT POLEWARD OUTFLOW. THE CURRENT POSITION IS BASED ON THE MSI AND AFOREMENTIONED MICROWAVE IMAGE WITH GOOD CONFIDENCE. THE INITIAL INTENSITY OF 40 KNOTS IS BASED ON THE CURRENT STRUCTURE AND IS HEDGED SLIGHTLY HIGHER THAN DVORAK INTENSITY ESTIMATE FROM PGTW. TC 11S IS TRACKING UNDER THE STEERING INFLUENCE OF A LOW- TO MID-LEVEL SUB-TROPICAL RIDGE TO THE EAST. OVER THE NEXT 24 HOURS, TC FUNDI WILL FURTHER TRACK INTO AN UNFAVORABLE AREA OF INCREASING VWS AND COOLER SEA SURFACE TEMPERATURES. THIS COMBINED EFFECT WILL WEAKEN THE SYSTEM LEADING TO ITS DISSIPATION BY THE END OF THE FORECAST PERIOD, OR POSSIBLY SOONER. AVAILABLE MODEL GUIDANCE CONTINUES TO BE IN GOOD AGREEMENT LENDING TO HIGH CONFIDENCE IN JTWC TRACK FORECAST. MAXIMUM SIGNIFICANT WAVE HEIGHT AT 080600Z IS 12 FEET. NEXT WARNING AT 082100Z.// ========================================================================= WTXS31 PGTW 20150208 21:00z MSGID/GENADMIN/JOINT TYPHOON WRNCEN PEARL HARBOR HI// SUBJ/TROPICAL CYCLONE 11S (FUNDI) WARNING NR 005// RMKS/ 1. TROPICAL CYCLONE 11S (FUNDI) WARNING NR 005 01 ACTIVE TROPICAL CYCLONE IN SOUTHIO MAX SUSTAINED WINDS BASED ON ONE-MINUTE AVERAGE WIND RADII VALID OVER OPEN WATER ONLY --- WARNING POSITION: 081800Z --- NEAR 32.8S 44.2E MOVEMENT PAST SIX HOURS - 180 DEGREES AT 25 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: 32.8S 44.2E --- FORECASTS: 12 HRS, VALID AT: 090600Z --- 35.1S 42.7E MAX SUSTAINED WINDS - 030 KT, GUSTS 040 KT WIND RADII VALID OVER OPEN WATER ONLY DISSIPATED AS A SIGNIFICANT TROPICAL CYCLONE OVER WATER --- REMARKS: 082100Z POSITION NEAR 33.4S 43.8E. TROPICAL CYCLONE (TC) 11S (FUNDI), LOCATED APPROXIMATELY 840 NM SOUTH OF ANTANANARIVO, MADAGASCAR, HAS TRACKED SOUTHWARD AT 25 KNOTS OVER THE PAST SIX HOURS. ENHANCED INFRARED SATELLITE IMAGERY DEPICTS AN ELONGATING AND WEAKENING CONVECTIVE STRUCTURE WHICH IS LEAVING THE LOW LEVEL CIRCULATION CENTER (LLCC) PARTIALLY EXPOSED. TC 11S HAS MOVED INTO AN AREA OF STRONG (30 TO 40 KNOT) VERTICAL WIND SHEAR AND SEA SURFACE TEMPERATURES BELOW 25C. IN ADDITION, DRY AIR IS WRAPPING INTO THE LLCC WHICH IS EVIDENT IN THE 081634Z SSMIS COLOR COMPOSITE MICROWAVE IMAGE. THESE ENVIRONMENTAL CONDITIONS WILL ONLY AGGRAVATE AND CONTINUE TO RAPIDLY DETERIORATE THE SYSTEM LEADING TO COMPLETE DISSIPATION WITHIN 12 HOURS. 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 081800Z IS 10 FEET.//
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Document: tropical_cyclone_fundi.htm | Updated: 9 February 2015 |