Tropical Cyclones
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Season 2006-2007 Summaries (Operational Data): [AU] [SIO] [SPAC] [SH] | |
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WTXS21 PGTW 20070207 10:00z MSGID/GENADMIN/NAVPACMETOCCEN PEARL HARBOR HI/JTWC// SUBJ/TROPICAL CYCLONE FORMATION ALERT// RMKS/ 1. FORMATION OF A SIGNIFICANT TROPICAL CYCLONE IS POSSIBLE WITHIN A 150 NM RADIUS OF 17.9S 50.2E 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 30 TO 35 KNOTS. METSAT IMAGERY AT 070600Z INDICATES THAT A CIRCULATION CENTER IS LOCATED NEAR 18.1S 50.3E. THE SYSTEM IS MOVING NORTH-NORTHWESTWARD AT 07 KNOTS. 2. REMARKS: THE AREA OF CONVECTION PREVIOUSLY LOCATED NEAR 19.0S 50.9E, IS NOW LOCATED NEAR 18.1S 50.3E, APPROXIMATELY 194 NM EAST- NORTHEAST OF ANTANANARIVO, MADAGASCAR. BASED ON ANIMATED MULTI- SPECTRAL IMAGERY AND A 070305Z QUIKSCAT PASS REVEAL A LOW LEVEL CIRC- ULATION CENTER (LLCC) THAT REMAINS WELL DEFINED, ALTHOUGH IS TRACKING ALONG THE EASTERN COAST OF MADAGASCAR. DEEP CONVECTION PERSISTS OVER THE LLCC. UPPER LEVEL ANALYSIS INDICATES THE SYSTEM IS IN A REGION OF LOW TO MODERATE VERTICAL WIND SHEAR AND THERE IS AN AREA OF DIVER- GENCE LOCATED OVER THE LLCC. CURRENTLY THE PROXIMITY OF THE SYSTEM TO LAND REMAINS THE MAJOR FACTOR THAT APPEARS TO BE INHIBITING DEVELOP- MENT AT THIS TIME. MAXIMUM SUSTAINED SURFACE WINDS ARE ESTIMATED AT 30 TO 35 KNOTS. MINIMUM SEA LEVEL PRESSURE IS ESTIMATED TO BE 1000 MB. DUE TO DEEP CONVECTION OVER LLCC, LOW VERTICAL WIND SHEAR, AND EXCELLENT OUTFLOW THE POTENTIAL FOR THE DEVELOPMENT OF A SIGNIFICANT TROPICAL CYCLONE WITHIN THE NEXT 24 HOURS IS GOOD. THIS SUPERSEDES REF A. 3. THIS ALERT WILL BE REISSUED, UPGRADED TO WARNING OR CANCELLED BY 081000Z.// ========================================================================= WTXS32 PGTW 20070209 09:00z MSGID/GENADMIN/NAVPACMETOCCEN PEARL HARBOR HI/JTWC// SUBJ/TROPICAL CYCLONE WARNING// REF/A/NAVPACMETOCCEN PEARL HARBOR HI/070951Z FEB 07// AMPN/TROPICAL CYCLONE FORMATION ALERT// RMKS/ 1. TROPICAL CYCLONE 13S WARNING NR 001 02 ACTIVE TROPICAL CYCLONES IN SOUTHIO MAX SUSTAINED WINDS BASED ON ONE-MINUTE AVERAGE --- WARNING POSITION: 090600Z --- NEAR 15.2S 53.6E MOVEMENT PAST SIX HOURS - 070 DEGREES AT 09 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 REPEAT POSIT: 15.2S 53.6E --- FORECASTS: 12 HRS, VALID AT: 091800Z --- 14.7S 55.5E MAX SUSTAINED WINDS - 035 KT, GUSTS 045 KT VECTOR TO 24 HR POSIT: 100 DEG/ 12 KTS --- 24 HRS, VALID AT: 100600Z --- 15.0S 57.9E MAX SUSTAINED WINDS - 040 KT, GUSTS 050 KT RADIUS OF 034 KT WINDS - 040 NM NORTHEAST QUADRANT 040 NM SOUTHEAST QUADRANT 040 NM SOUTHWEST QUADRANT 045 NM NORTHWEST QUADRANT VECTOR TO 36 HR POSIT: 115 DEG/ 15 KTS --- 36 HRS, VALID AT: 101800Z --- 16.3S 60.7E MAX SUSTAINED WINDS - 045 KT, GUSTS 055 KT RADIUS OF 034 KT WINDS - 050 NM NORTHEAST QUADRANT 050 NM SOUTHEAST QUADRANT 050 NM SOUTHWEST QUADRANT 055 NM NORTHWEST QUADRANT VECTOR TO 48 HR POSIT: 120 DEG/ 14 KTS --- EXTENDED OUTLOOK: 48 HRS, VALID AT: 110600Z --- 17.7S 63.3E MAX SUSTAINED WINDS - 045 KT, GUSTS 055 KT RADIUS OF 034 KT WINDS - 050 NM NORTHEAST QUADRANT 050 NM SOUTHEAST QUADRANT 050 NM SOUTHWEST QUADRANT 055 NM NORTHWEST QUADRANT --- REMARKS: 090900Z POSITION NEAR 15.1S 54.1E. TROPICAL CYCLONE (TC) 13S (NONAME), LOCATED APPROXIMATELY 375 NM NORTH-NORTHWEST OF LA REUNION, HAS TRACKED EAST-NORTHEASTWARD AT 09 KNOTS OVER THE PAST SIX HOURS. RECENT ANIMATED MULTISPECTRAL IMAGERY INDICATES DEEP CONVECTION OVER A CONSOLIDATING LOW LEVEL CIRCULATION CENTER. A 090319Z TRMM MICROWAVE PASS INDICATES WELL DEVELOPED CONVECTIVE BANDING ON THE NORTHERN PERIPHERY OF THE SYSTEM. UPPER LEVEL ANALYSIS INDICATES THAT A 200 MB ANTICYCLONE TO THE WEST OF THE SYSTEM IS PROVIDING EXCELLENT EQUATORWARD OUTFLOW. POLE- WARD OUTFLOW IS CURRENTLY BEING PARTIALLY RESTRICTED BY THE REMNANTS OF 10S TO ITS SOUTHEAST. TC 13S IS CURRENTLY ON THE FAR SOUTHWESTERN PERIPHERY OF THE NEAR EQUATORIAL RIDGE (NER). THE STORM WILL CONTINUE ON A GENERAL EASTWARD TRACK THROUGH TAU 24, AT WHICH POINT IT WILL TURN MORE POLEWARD AS IT REACHES THE SOUTHEASTERN QUADRANT OF THE NER. THE DYNAMICAL AIDS ARE INDICATING A SHARPER POLEWARD TURN, WITH MANY OF THE MODELS ABSORBING TC 13S INTO AND THE REMNANTS OF TC 10S. THE SYSTEM WILL INTENSIFY AT A WELL BELOW CLIMATOLOGICAL RATE THROUGH TAU 48 DUE TO THE RESTRICTED POLEWARD OUTFLOW. THIS WARNING SUPERSEDES AND CANCELS REF A, NAVPACMETOCCEN 070951Z FEB 07 TROPICAL CYCLONE FORMATION ALERT (WTXS21 PGTW 081000). MAXIMUM SIGNIFICANT WAVE HEIGHT AT 090600Z IS 12 FEET. NEXT WARNINGS AT 092100Z AND 100900Z. REFER TO TROPICAL CYCLONE 10S (DORA) WARNINGS (WTXS31 PGTW) FOR TWELVE-HOURLY UPDATES.// ========================================================================= WTXS32 PGTW 20070209 21:00z MSGID/GENADMIN/NAVPACMETOCCEN PEARL HARBOR HI/JTWC// SUBJ: TROPICAL CYCLONE 13S (ENOK) WARNING NR 002 1. TROPICAL CYCLONE 13S (ENOK) WARNING NR 002 01 ACTIVE TROPICAL CYCLONES IN SOUTHIO MAX SUSTAINED WINDS BASED ON ONE-MINUTE AVERAGE --- WARNING POSITION: 091800Z --- NEAR 15.3S 56.9E MOVEMENT PAST SIX HOURS - 105 DEGREES AT 19 KTS POSITION ACCURATE TO WITHIN 060 NM POSITION BASED ON CENTER LOCATED BY SATELLITE PRESENT WIND DISTRIBUTION: MAX SUSTAINED WINDS - 050 KT, GUSTS 065 KT RADIUS OF 034 KT WINDS - 050 NM NORTHEAST QUADRANT 055 NM SOUTHEAST QUADRANT 050 NM SOUTHWEST QUADRANT 050 NM NORTHWEST QUADRANT REPEAT POSIT: 15.3S 56.9E --- FORECASTS: 12 HRS, VALID AT: 100600Z --- 16.4S 60.1E MAX SUSTAINED WINDS - 065 KT, GUSTS 080 KT RADIUS OF 050 KT WINDS - 030 NM NORTHEAST QUADRANT 030 NM SOUTHEAST QUADRANT 030 NM SOUTHWEST QUADRANT 030 NM NORTHWEST QUADRANT RADIUS OF 034 KT WINDS - 080 NM NORTHEAST QUADRANT 085 NM SOUTHEAST QUADRANT 080 NM SOUTHWEST QUADRANT 080 NM NORTHWEST QUADRANT VECTOR TO 24 HR POSIT: 120 DEG/ 16 KTS --- 24 HRS, VALID AT: 101800Z --- 18.0S 63.0E MAX SUSTAINED WINDS - 075 KT, GUSTS 090 KT RADIUS OF 064 KT WINDS - 020 NM NORTHEAST QUADRANT 020 NM SOUTHEAST QUADRANT 020 NM SOUTHWEST QUADRANT 020 NM NORTHWEST QUADRANT RADIUS OF 050 KT WINDS - 035 NM NORTHEAST QUADRANT 035 NM SOUTHEAST QUADRANT 035 NM SOUTHWEST QUADRANT 035 NM NORTHWEST QUADRANT RADIUS OF 034 KT WINDS - 095 NM NORTHEAST QUADRANT 100 NM SOUTHEAST QUADRANT 095 NM SOUTHWEST QUADRANT 095 NM NORTHWEST QUADRANT VECTOR TO 36 HR POSIT: 135 DEG/ 14 KTS --- 36 HRS, VALID AT: 110600Z --- 19.9S 65.2E MAX SUSTAINED WINDS - 080 KT, GUSTS 100 KT RADIUS OF 064 KT WINDS - 020 NM NORTHEAST QUADRANT 020 NM SOUTHEAST QUADRANT 020 NM SOUTHWEST QUADRANT 020 NM NORTHWEST QUADRANT RADIUS OF 050 KT WINDS - 035 NM NORTHEAST QUADRANT 035 NM SOUTHEAST QUADRANT 035 NM SOUTHWEST QUADRANT 035 NM NORTHWEST QUADRANT RADIUS OF 034 KT WINDS - 100 NM NORTHEAST QUADRANT 110 NM SOUTHEAST QUADRANT 100 NM SOUTHWEST QUADRANT 100 NM NORTHWEST QUADRANT VECTOR TO 48 HR POSIT: 130 DEG/ 14 KTS --- EXTENDED OUTLOOK: 48 HRS, VALID AT: 111800Z --- 21.7S 67.5E MAX SUSTAINED WINDS - 080 KT, GUSTS 100 KT RADIUS OF 064 KT WINDS - 020 NM NORTHEAST QUADRANT 020 NM SOUTHEAST QUADRANT 020 NM SOUTHWEST QUADRANT 020 NM NORTHWEST QUADRANT RADIUS OF 050 KT WINDS - 035 NM NORTHEAST QUADRANT 035 NM SOUTHEAST QUADRANT 035 NM SOUTHWEST QUADRANT 035 NM NORTHWEST QUADRANT RADIUS OF 034 KT WINDS - 105 NM NORTHEAST QUADRANT 115 NM SOUTHEAST QUADRANT 100 NM SOUTHWEST QUADRANT 100 NM NORTHWEST QUADRANT --- REMARKS: 092100Z POSITION NEAR 15.6S 57.7E. TROPICAL CYCLONE (TC) 13S (ENOK), LOCATED APPROXIMATELY 360 NM NORTH- NORTHEAST OF LA REUNION, HAS TRACKED EAST-SOUTHEASTWARD AT 19 KNOTS OVER THE PAST SIX HOURS. RECENT ANIMATED WATER VAPOR AND INFRARED SATELLITE IMAGERY SHOW TC 13S ACCELERATING RAPIDLY SOUTHEASTWARD IN THE GRADIENT FLOW BETWEEN A NEAR-EQUATORIAL RIDGE (NER) TO THE NORTH- EAST AND TROUGHING EXTENDING NORTHWESTWARD FROM THE REMNANTS OF TC 10S TO THE SOUTH. THE STORM IS EXPECTED TO CONTINUE TRACKING SOUTHEASTWARD, BUT MORE SLOWLY THROUGH TIME AS THE GRADIENT BETWEEN THE NER AND THE TROUGH TO THE SOUTH WEAKENS. TC 13S HAS INTENSIFIED AT A SLIGHTLY HIGHER THAN CLIMATOLOGICAL RATE DURING THE PAST 12 HOURS, EXHIBITING AN ASYMMETRICAL BANDING EYE FEATURE IN RECENT MIC- ROWAVE SATELLITE IMAGERY INCLUDING A 09/1612Z SSMI PASS. THE STORM IS EXPECTED TO FURTHER INTENSIFY AT A CLIMATOLOGICAL RATE THROUGH TAU 24 UNDER THE INFLUENCE OF LOW VERTICAL WIND SHEAR ASSOCIATED WITH RIDGING ALOFT AND GOOD WESTWARD AND EQUATORWARD OUTFLOW. AFTER TAU 24, INCREASING VERTICAL WIND SHEAR IS EXPECTED TO HINDER FURTHER SIGNFICANT INTENSIFICATION. MAXIMUM SIGNIFICANT WAVE HEIGHT AT 091800Z IS 15 FEET. NEXT WARNINGS AT 100900Z AND 102100Z.// ========================================================================= WTXS32 PGTW 20070210 09:00z MSGID/GENADMIN/NAVPACMETOCCEN PEARL HARBOR HI/JTWC// SUBJ/TROPICAL CYCLONE WARNING// REF/A/NAVPACMETOCCEN PEARL HARBOR HI/070951Z FEB 07// AMPN/TROPICAL CYCLONE FORMATION ALERT// RMKS/ 1. TROPICAL CYCLONE 13S (ENOK) WARNING NR 003 01 ACTIVE TROPICAL CYCLONE IN SOUTHIO MAX SUSTAINED WINDS BASED ON ONE-MINUTE AVERAGE --- WARNING POSITION: 100600Z --- NEAR 16.9S 60.4E MOVEMENT PAST SIX HOURS - 120 DEGREES AT 18 KTS POSITION ACCURATE TO WITHIN 040 NM POSITION BASED ON CENTER LOCATED BY SATELLITE PRESENT WIND DISTRIBUTION: MAX SUSTAINED WINDS - 055 KT, GUSTS 070 KT RADIUS OF 050 KT WINDS - 025 NM NORTHEAST QUADRANT 025 NM SOUTHEAST QUADRANT 025 NM SOUTHWEST QUADRANT 025 NM NORTHWEST QUADRANT RADIUS OF 034 KT WINDS - 075 NM NORTHEAST QUADRANT 065 NM SOUTHEAST QUADRANT 055 NM SOUTHWEST QUADRANT 065 NM NORTHWEST QUADRANT REPEAT POSIT: 16.9S 60.4E --- FORECASTS: 12 HRS, VALID AT: 101800Z --- 19.3S 62.9E MAX SUSTAINED WINDS - 060 KT, GUSTS 075 KT RADIUS OF 050 KT WINDS - 025 NM NORTHEAST QUADRANT 025 NM SOUTHEAST QUADRANT 025 NM SOUTHWEST QUADRANT 025 NM NORTHWEST QUADRANT RADIUS OF 034 KT WINDS - 075 NM NORTHEAST QUADRANT 075 NM SOUTHEAST QUADRANT 065 NM SOUTHWEST QUADRANT 060 NM NORTHWEST QUADRANT VECTOR TO 24 HR POSIT: 145 DEG/ 14 KTS --- 24 HRS, VALID AT: 110600Z --- 21.6S 64.5E MAX SUSTAINED WINDS - 055 KT, GUSTS 070 KT RADIUS OF 050 KT WINDS - 025 NM NORTHEAST QUADRANT 025 NM SOUTHEAST QUADRANT 020 NM SOUTHWEST QUADRANT 025 NM NORTHWEST QUADRANT RADIUS OF 034 KT WINDS - 075 NM NORTHEAST QUADRANT 075 NM SOUTHEAST QUADRANT 065 NM SOUTHWEST QUADRANT 065 NM NORTHWEST QUADRANT VECTOR TO 36 HR POSIT: 160 DEG/ 11 KTS --- 36 HRS, VALID AT: 111800Z --- 23.6S 65.2E MAX SUSTAINED WINDS - 050 KT, GUSTS 065 KT RADIUS OF 034 KT WINDS - 075 NM NORTHEAST QUADRANT 075 NM SOUTHEAST QUADRANT 065 NM SOUTHWEST QUADRANT 060 NM NORTHWEST QUADRANT VECTOR TO 48 HR POSIT: 165 DEG/ 06 KTS --- EXTENDED OUTLOOK: 48 HRS, VALID AT: 120600Z --- 24.8S 65.6E MAX SUSTAINED WINDS - 050 KT, GUSTS 065 KT RADIUS OF 034 KT WINDS - 065 NM NORTHEAST QUADRANT 075 NM SOUTHEAST QUADRANT 075 NM SOUTHWEST QUADRANT 065 NM NORTHWEST QUADRANT --- REMARKS: 100900Z POSITION NEAR 17.5S 61.0E. TROPICAL CYCLONE (TC) 13S (ENOK), LOCATED APPROXIMATELY 375 NM NORTH- EAST OF LA REUNION, HAS TRACKED EAST-SOUTHEASTWARD AT 18 KNOTS OVER THE PAST SIX HOURS. AN EARLIER BURST OF CONVECTION AT THE SYSTEM CORE IS BEGINNING TO WEAKEN, AS ANIMATED ENHANCED INFRARED IMAGERY REVEALS THAT CLOUD TOP TEMPERATURES ARE WARMING. THE SMALL STORM WILL CONTINUE TO TRACK SOUTHEASTWARD UNDER THE SHARED FLOW BETWEEN RIDGING TO THE NORTHEAST AND TROUGHING EXTENDING NORTHWESTWARD FROM THE LARGE EXTRATROPICAL CIRCULATION THAT WAS ONCE TC 10S. ALTHOUGH UPPER LEVEL OUTFLOW IS EXPECTED TO REMAIN FAVORABLE IN THE NEAR TERM, THE STORM WILL ENCOUNTER A REGION OF LOWER-THAN-NORMAL SEA SURFACE TEMPERATURES (LESS THAN 26 DEGREES CELCIUS) AND DRIER/MORE STABLE MID-LEVEL AIR WHICH SHOULD INHIBIT SIGNIFICANT INTENSIFICATION THROUGH THE FORECAST PERIOD. MAXIMUM SIGNIFICANT WAVE HEIGHT AT 100600Z IS 16 FEET. NEXT WARNINGS AT 102100Z AND 110900Z.// ========================================================================= WTXS32 PGTW 20070210 21:00z MSGID/GENADMIN/NAVPACMETOCCEN PEARL HARBOR HI/JTWC// SUBJ/TROPICAL CYCLONE WARNING// RMKS/ 1. TROPICAL CYCLONE 13S (ENOK) WARNING NR 004 01 ACTIVE TROPICAL CYCLONE IN SOUTHIO MAX SUSTAINED WINDS BASED ON ONE-MINUTE AVERAGE --- WARNING POSITION: 101800Z --- NEAR 19.4S 63.6E MOVEMENT PAST SIX HOURS - 130 DEGREES AT 19 KTS POSITION ACCURATE TO WITHIN 060 NM POSITION BASED ON CENTER LOCATED BY SATELLITE PRESENT WIND DISTRIBUTION: MAX SUSTAINED WINDS - 045 KT, GUSTS 055 KT RADIUS OF 034 KT WINDS - 065 NM NORTHEAST QUADRANT 070 NM SOUTHEAST QUADRANT 055 NM SOUTHWEST QUADRANT 055 NM NORTHWEST QUADRANT REPEAT POSIT: 19.4S 63.6E --- FORECASTS: 12 HRS, VALID AT: 110600Z --- 22.0S 65.8E MAX SUSTAINED WINDS - 045 KT, GUSTS 055 KT RADIUS OF 034 KT WINDS - 065 NM NORTHEAST QUADRANT 065 NM SOUTHEAST QUADRANT 055 NM SOUTHWEST QUADRANT 055 NM NORTHWEST QUADRANT VECTOR TO 24 HR POSIT: 150 DEG/ 14 KTS --- 24 HRS, VALID AT: 111800Z --- 24.4S 67.3E MAX SUSTAINED WINDS - 045 KT, GUSTS 055 KT RADIUS OF 034 KT WINDS - 065 NM NORTHEAST QUADRANT 065 NM SOUTHEAST QUADRANT 060 NM SOUTHWEST QUADRANT 055 NM NORTHWEST QUADRANT VECTOR TO 36 HR POSIT: 155 DEG/ 10 KTS --- 36 HRS, VALID AT: 120600Z --- 26.3S 68.2E MAX SUSTAINED WINDS - 045 KT, GUSTS 055 KT RADIUS OF 034 KT WINDS - 065 NM NORTHEAST QUADRANT 065 NM SOUTHEAST QUADRANT 060 NM SOUTHWEST QUADRANT 055 NM NORTHWEST QUADRANT VECTOR TO 48 HR POSIT: 155 DEG/ 07 KTS --- EXTENDED OUTLOOK: 48 HRS, VALID AT: 121800Z --- 27.5S 68.8E MAX SUSTAINED WINDS - 040 KT, GUSTS 050 KT BECOMING EXTRATROPICAL RADIUS OF 034 KT WINDS - 050 NM NORTHEAST QUADRANT 055 NM SOUTHEAST QUADRANT 055 NM SOUTHWEST QUADRANT 050 NM NORTHWEST QUADRANT --- REMARKS: 102100Z POSITION NEAR 20.1S 64.2E. TROPICAL CYCLONE (TC) 13S (ENOK), LOCATED APPROXIMATELY 460 NM EAST- NORTHEAST OF LA REUNION, HAS TRACKED SOUTHEASTWARD AT 19 KNOTS OVER THE PAST SIX HOURS. TC 13S CONTINUES TO TRACK RAPIDLY SOUTHEASTWARD IN THE STRONG GRADIENT BETWEEN RIDGING TO THE NORTHEAST AND TROUGHING ASSOCIATED WITH THE REMNANTS OF TC 10S TO THE SOUTHWEST. THIS MOTION IS EXPECTED TO CONTINUE THROUGH THE FORECAST PERIOD, WITH SOME REDUC- TION IN FORWARD SPEED AS THE REMNANT LOW OF 10S FILLS AND ASSOCIATED TROUGHING DISSIPATES. THE STORM IS EXPECTED TO WEAKEN VERY SLOWLY OVER THE NEXT 48 HOURS AS FAVORABLE EQUATORWARD OUTFLOW AND ENHANCED POLEWARD OUTFLOW ASSOCIATED WITH A DEVELOPING UPPER LEVEL LOW TO THE SOUTH OF THE STORM WORK TO OFFSET THE NEGATIVE IMPACTS OF DECREASING SEA SURFACE TEMPERATURES AND DRY AIR ENTRAINMENT. THE STORM IS EXPEC- TED TO BEGIN EXTRATROPICAL TRANSITION BETWEEN TAU 36 AND TAU 48 DUE TO INCREASING INTERACTION WITH THE MID-LATITUDE FLOW PATTERN TO THE SOUTH. MAXIMUM SIGNIFICANT WAVE HEIGHT AT 101800Z IS 15 FEET. NEXT WARNINGS AT 110900Z AND 112100Z.// ========================================================================= WTXS32 PGTW 20070211 09:00z MSGID/GENADMIN/NAVPACMETOCCEN PEARL HARBOR HI/JTWC// SUBJ/TROPICAL CYCLONE WARNING// RMKS/ 1. TROPICAL CYCLONE 13S (ENOK) WARNING NR 005 01 ACTIVE TROPICAL CYCLONE IN SOUTHIO MAX SUSTAINED WINDS BASED ON ONE-MINUTE AVERAGE --- WARNING POSITION: 110600Z --- NEAR 21.8S 64.2E MOVEMENT PAST SIX HOURS - 165 DEGREES AT 15 KTS POSITION ACCURATE TO WITHIN 040 NM POSITION BASED ON CENTER LOCATED BY SATELLITE PRESENT WIND DISTRIBUTION: MAX SUSTAINED WINDS - 035 KT, GUSTS 045 KT DISSIPATING AS A SIGNIFICANT TROPICAL CYCLONE OVER WATER REPEAT POSIT: 21.8S 64.2E --- FORECASTS: 12 HRS, VALID AT: 111800Z --- 23.7S 64.5E MAX SUSTAINED WINDS - 030 KT, GUSTS 040 KT DISSIPATED AS A SIGNIFICANT TROPICAL CYCLONE OVER WATER VECTOR TO 24 HR POSIT: 185 DEG/ 09 KTS --- 24 HRS, VALID AT: 120600Z --- 25.4S 64.4E MAX SUSTAINED WINDS - 025 KT, GUSTS 035 KT DISSIPATED AS A SIGNIFICANT TROPICAL CYCLONE OVER WATER --- REMARKS: 110900Z POSITION NEAR 22.3S 64.3E. TROPICAL CYCLONE (TC) 13S (ENOK), LOCATED APPROXIMATELY 480 NM EAST OF LA REUNION, HAS TRACKED SOUTH-SOUTHEASTWARD AT 15 KNOTS OVER THE PAST SIX HOURS. ANIMATED MULTISPECTRAL SATELLITE IMAGERY REVEALS A CIRCULATION DEVOID OF CONVECTION AS IT TRACKS POLEWARD INTO A REGION OF MARGINAL SEA SURFACE TEMPERATURES (AT OR BELOW 26 DEGREES CELCIUS). THE UPPER LEVEL ENVIRONMENT IS ALSO UNFAVORABLE FOR THE REGENERATION OF SUSTAINED DEEP CONVECTION DUE TO INCREASING VERTICAL WIND SHEAR AND ADVECTION OF DRY/STABLE MID-TROPOSPHERIC AIR. GIVEN THE COMPLETE DISSIPATION OF CONVECTION, THE SHALLOW SYSTEM IS NO LONGER EXPECTED TO BECOME EMBEDDED IN THE MIDLATITUDE FLOW, BUT RATHER DISSIPATE AS A SIGNIFICANT TROPICAL CYCLONE OVER WATER. THIS IS THE FINAL WARNING ON THIS SYSTEM BY THE JOINT TYPHOON WARNING CENTER (NAVPACMETOCCEN). THE SYSTEM WILL BE CLOSELY MONITORED FOR SIGNS OF REGENERATION. MAXIMUM SIGNIFICANT WAVE HEIGHT AT 110600Z IS 12 FEET.//
Tropical cyclone tracks developed by Michael Bath using operational warnings and advisories.
Document: tropical_cyclone_enok_jtwc_advisories.htm
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