#1
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Fehi - Pacific Ocean
WTPS31 PGTW 280300 COR
MSGID/GENADMIN/JOINT TYPHOON WRNCEN PEARL HARBOR HI// SUBJ/TROPICAL CYCLONE WARNING CORRECTED// REF/A/MSG/JOINT TYPHOON WRNCEN PEARL HARBOR HI/272051ZJAN2018// AMPN/REF A IS A TROPICAL CYCLONE FORMATION ALERT REISSUED.// RMKS/ 1. TROPICAL CYCLONE 08P (EIGHT) WARNING NR 001A CORRECTED 01 ACTIVE TROPICAL CYCLONE IN SOUTHPAC MAX SUSTAINED WINDS BASED ON ONE-MINUTE AVERAGE WIND RADII VALID OVER OPEN WATER ONLY --- WARNING POSITION: 280000Z --- NEAR 16.1S 160.0E MOVEMENT PAST SIX HOURS - 145 DEGREES AT 07 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 RADIUS OF 034 KT WINDS - 120 NM NORTHEAST QUADRANT 090 NM SOUTHEAST QUADRANT 050 NM SOUTHWEST QUADRANT 040 NM NORTHWEST QUADRANT REPEAT POSIT: 16.1S 160.0E --- FORECASTS: 12 HRS, VALID AT: 281200Z --- 17.4S 161.2E MAX SUSTAINED WINDS - 040 KT, GUSTS 050 KT WIND RADII VALID OVER OPEN WATER ONLY RADIUS OF 034 KT WINDS - 275 NM NORTHEAST QUADRANT 200 NM SOUTHEAST QUADRANT 080 NM SOUTHWEST QUADRANT 165 NM NORTHWEST QUADRANT VECTOR TO 24 HR POSIT: 150 DEG/ 09 KTS --- 24 HRS, VALID AT: 290000Z --- 19.0S 162.1E MAX SUSTAINED WINDS - 040 KT, GUSTS 050 KT WIND RADII VALID OVER OPEN WATER ONLY RADIUS OF 034 KT WINDS - 315 NM NORTHEAST QUADRANT 250 NM SOUTHEAST QUADRANT 095 NM SOUTHWEST QUADRANT 080 NM NORTHWEST QUADRANT VECTOR TO 36 HR POSIT: 155 DEG/ 11 KTS --- 36 HRS, VALID AT: 291200Z --- 21.0S 163.2E MAX SUSTAINED WINDS - 040 KT, GUSTS 050 KT WIND RADII VALID OVER OPEN WATER ONLY RADIUS OF 034 KT WINDS - 260 NM NORTHEAST QUADRANT 285 NM SOUTHEAST QUADRANT 145 NM SOUTHWEST QUADRANT 045 NM NORTHWEST QUADRANT VECTOR TO 48 HR POSIT: 175 DEG/ 11 KTS --- EXTENDED OUTLOOK: 48 HRS, VALID AT: 300000Z --- 23.2S 163.5E MAX SUSTAINED WINDS - 045 KT, GUSTS 055 KT WIND RADII VALID OVER OPEN WATER ONLY RADIUS OF 034 KT WINDS - 255 NM NORTHEAST QUADRANT 305 NM SOUTHEAST QUADRANT 160 NM SOUTHWEST QUADRANT 070 NM NORTHWEST QUADRANT VECTOR TO 72 HR POSIT: 180 DEG/ 17 KTS --- 72 HRS, VALID AT: 310000Z --- 30.0S 163.7E MAX SUSTAINED WINDS - 050 KT, GUSTS 065 KT WIND RADII VALID OVER OPEN WATER ONLY BECOMING EXTRATROPICAL RADIUS OF 050 KT WINDS - 055 NM NORTHEAST QUADRANT 030 NM SOUTHEAST QUADRANT 055 NM SOUTHWEST QUADRANT 070 NM NORTHWEST QUADRANT RADIUS OF 034 KT WINDS - 285 NM NORTHEAST QUADRANT 330 NM SOUTHEAST QUADRANT 200 NM SOUTHWEST QUADRANT 165 NM NORTHWEST QUADRANT VECTOR TO 96 HR POSIT: 165 DEG/ 22 KTS --- LONG RANGE OUTLOOK: --- 96 HRS, VALID AT: 010000Z --- 38.3S 167.0E MAX SUSTAINED WINDS - 050 KT, GUSTS 065 KT WIND RADII VALID OVER OPEN WATER ONLY EXTRATROPICAL RADIUS OF 050 KT WINDS - 205 NM NORTHEAST QUADRANT 165 NM SOUTHEAST QUADRANT 105 NM SOUTHWEST QUADRANT 135 NM NORTHWEST QUADRANT RADIUS OF 034 KT WINDS - 415 NM NORTHEAST QUADRANT 405 NM SOUTHEAST QUADRANT 270 NM SOUTHWEST QUADRANT 265 NM NORTHWEST QUADRANT --- REMARKS: 280300Z POSITION NEAR 16.4S 160.3E. TROPICAL CYCLONE 08P (EIGHT), LOCATED APPROXIMATELY 486 NM WEST OF PORT VILA, VANUATU, HAS TRACKED SOUTHEASTWARD AT 07 KNOTS OVER THE PAST SIX HOURS. ANIMATED MULTISPECTRAL SATELLITE IMAGERY INDICATES DEEP FLARING CONVECTION ORIENTED NORTHWEST-SOUTHEAST ALONG AN ACTIVE MONSOON TROUGH IN THE SOUTH PACIFIC CONVERGENCE ZONE (SPCZ). A CONCENTRATION OF DEEP CONVECTION HAS BEEN WRAPPING INTO A LOW-LEVEL CIRCULATION CENTER (LLCC), WITH A 272311Z ASCAT PASS DEPICTING 35 TO 40 KNOT WINDS SURROUNDING THE LLCC. THE INITIAL POSITION IS PLACED WITH GOOD CONFIDENCE, AND THE INITIAL INTENSITY IS SET AT 35 KNOTS BASED PRIMARILY ON THE AFOREMENTIONED ASCAT PASS. THIS IS CORROBORATED BY THE DVORAK ESTIMATE OF T2.5 FROM PGTW. UPPER-LEVEL ANALYSIS INDICATES THE PRESENCE OF MODERATE NORTHWESTERLY VERTICAL WIND SHEAR (15-20 KNOTS) ORIENTED PARALLEL TO THE SPCZ, WHICH SHOULD LIMIT ANY RAPID DEVELOPMENT. HOWEVER, THE WIND FIELD IS EXPECTED TO EXPAND AS THE SYSTEM GRADUALLY MOVES POLEWARD AND TAPS INTO MID- LATITUDE DYNAMICS. TC 08P WILL CONTINUE TO MOVE TOWARD THE SOUTH-SOUTHEAST AROUND A SUBTROPICAL RIDGE CENTERED OVER THE EASTERN COAST OF AUSTRALIA. AFTER TAU 72, WITH INCREASE BAROCLINICITY AND STRONGER VERTICAL WIND SHEAR, TC 08P IS EXPECTED TO BEGIN EXTRA TROPICAL TRANSITION AND COMPLETELY LOSE ITS TROPICAL CHARACTERISTICS BY TAU 96 IN THE VICINITY OF NEW ZEALAND. GLOBAL MODELS ARE IN GOOD AGREEMENT, SO THERE IS HIGH CONFIDENCE IN THE JTWC FORECAST TRACK. MAXIMUM SIGNIFICANT WAVE HEIGHT AT 280000Z IS 12 FEET. NEXT WARNINGS AT 280900Z, 281500Z, 282100Z AND 290300Z. 2. THIS CANCELS AND SUPERSEDES REF A (WTPS21 PGTW 272100). 3. JUSTIFICATION FOR CORRECTION: ADDED REFERENCE TO TCFA MESSAGE IN BULLETIN HEADER AND ADDED PARA 2. https://icons.wunderground.com/data/...01808_5day.gif
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David |
#2
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1. TROPICAL CYCLONE 08P (EIGHT) WARNING NR 002
01 ACTIVE TROPICAL CYCLONE IN SOUTHPAC MAX SUSTAINED WINDS BASED ON ONE-MINUTE AVERAGE WIND RADII VALID OVER OPEN WATER ONLY --- WARNING POSITION: 280600Z --- NEAR 17.9S 161.4E MOVEMENT PAST SIX HOURS - 145 DEGREES AT 22 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 RADIUS OF 034 KT WINDS - 140 NM NORTHEAST QUADRANT 110 NM SOUTHEAST QUADRANT 105 NM SOUTHWEST QUADRANT 225 NM NORTHWEST QUADRANT REPEAT POSIT: 17.9S 161.4E --- FORECASTS: 12 HRS, VALID AT: 281800Z --- 19.5S 162.4E MAX SUSTAINED WINDS - 040 KT, GUSTS 050 KT WIND RADII VALID OVER OPEN WATER ONLY RADIUS OF 034 KT WINDS - 300 NM NORTHEAST QUADRANT 225 NM SOUTHEAST QUADRANT 075 NM SOUTHWEST QUADRANT 115 NM NORTHWEST QUADRANT VECTOR TO 24 HR POSIT: 150 DEG/ 09 KTS --- 24 HRS, VALID AT: 290600Z --- 21.1S 163.3E MAX SUSTAINED WINDS - 040 KT, GUSTS 050 KT WIND RADII VALID OVER OPEN WATER ONLY RADIUS OF 034 KT WINDS - 290 NM NORTHEAST QUADRANT 270 NM SOUTHEAST QUADRANT 115 NM SOUTHWEST QUADRANT 030 NM NORTHWEST QUADRANT VECTOR TO 36 HR POSIT: 165 DEG/ 12 KTS --- 36 HRS, VALID AT: 291800Z --- 23.4S 164.0E MAX SUSTAINED WINDS - 040 KT, GUSTS 050 KT WIND RADII VALID OVER OPEN WATER ONLY RADIUS OF 034 KT WINDS - 265 NM NORTHEAST QUADRANT 295 NM SOUTHEAST QUADRANT 105 NM SOUTHWEST QUADRANT 015 NM NORTHWEST QUADRANT VECTOR TO 48 HR POSIT: 175 DEG/ 14 KTS --- EXTENDED OUTLOOK: 48 HRS, VALID AT: 300600Z --- 26.2S 164.3E MAX SUSTAINED WINDS - 045 KT, GUSTS 055 KT WIND RADII VALID OVER OPEN WATER ONLY RADIUS OF 034 KT WINDS - 245 NM NORTHEAST QUADRANT 320 NM SOUTHEAST QUADRANT 175 NM SOUTHWEST QUADRANT 040 NM NORTHWEST QUADRANT VECTOR TO 72 HR POSIT: 175 DEG/ 17 KTS --- 72 HRS, VALID AT: 310600Z --- 33.0S 165.2E MAX SUSTAINED WINDS - 050 KT, GUSTS 065 KT WIND RADII VALID OVER OPEN WATER ONLY BECOMING EXTRATROPICAL RADIUS OF 050 KT WINDS - 090 NM NORTHEAST QUADRANT 010 NM SOUTHEAST QUADRANT 050 NM SOUTHWEST QUADRANT 070 NM NORTHWEST QUADRANT RADIUS OF 034 KT WINDS - 300 NM NORTHEAST QUADRANT 350 NM SOUTHEAST QUADRANT 215 NM SOUTHWEST QUADRANT 165 NM NORTHWEST QUADRANT VECTOR TO 96 HR POSIT: 160 DEG/ 25 KTS --- LONG RANGE OUTLOOK: --- 96 HRS, VALID AT: 010600Z --- 42.3S 170.4E MAX SUSTAINED WINDS - 050 KT, GUSTS 065 KT WIND RADII VALID OVER OPEN WATER ONLY EXTRATROPICAL RADIUS OF 050 KT WINDS - 205 NM NORTHEAST QUADRANT 170 NM SOUTHEAST QUADRANT 130 NM SOUTHWEST QUADRANT 125 NM NORTHWEST QUADRANT RADIUS OF 034 KT WINDS - 420 NM NORTHEAST QUADRANT 425 NM SOUTHEAST QUADRANT 280 NM SOUTHWEST QUADRANT 310 NM NORTHWEST QUADRANT --- REMARKS: 280900Z POSITION NEAR 18.3S 161.7E. TROPICAL CYCLONE 08P (EIGHT), LOCATED APPROXIMATELY 366 NM NORTHWEST OF NOUMEA, NEW CALEDONIA, HAS TRACKED SOUTHEASTWARD AT 22 KNOTS OVER THE PAST SIX HOURS. ANIMATED ENHANCED INFRARED SATELLITE IMAGERY SHOWS THE SYSTEM HAS BECOME ELONGATED AND RAGGED AS IT ACCELERATED POLEWARD, AS IT STRUGGLED TO MAINTAIN CONVECTIVE STRUCTURE. THE INITIAL POSITION IS BASED, WITH LOW CONFIDENCE, ON AN ELONGATED LOW REFLECTIVITY CIRCULATION FEATURE WITH A SHALLOW FORMATIVE BAND WRAPPING FROM THE SOUTH. THE INITIAL INTENSITY IS BASED ON THE DVORAK ESTIMATE OF T2.5 FROM PGTW. UPPER LEVEL ANALYSIS INDICATES THE CYCLONE IS IN AN AREA OF STRONG (30-KNOT PLUS) VWS, SLIGHTLY OFFSET BY STRONG POLEWARD OUTFLOW THAT IS PROVIDING VENTILATION TO THE ASSOCIATED WEAK CONVECTION. TC 08S IS TRACKING ALONG THE WESTERN PERIPHERY OF A STR TO THE EAST. IT IS EXPECTED TO MAINTAIN OR SLIGHTLY INCREASE IN INTENSITY AS IT ACCELERATES POLEWARD. BY TAU 72, THE CYCLONE WILL BEGIN EXTRA TROPICAL TRANSITION (ETT) AS IT GETS EMBEDDED IN THE COLD BAROCLINIC ZONE. CONCURRENTLY, THE SYSTEM WILL SLIGHTLY INTENSIFY AS IT GETS ABSORBED IN THE STRONG MID-LATITUDE WIND FIELD. TC 08S WILL COMPLETE ETT BY TAU 96 AND TRANSFORM INTO A COLD CORE LOW. THE AVAILABLE NUMERIC GUIDANCE IS IN TIGHT AGREEMENT LENDING HIGH CONFIDENCE TO THE JTWC TRACK FORECAST. MAXIMUM SIGNIFICANT WAVE HEIGHT AT 280600Z IS 16 FEET. NEXT WARNINGS AT 281500Z, 282100Z, 290300Z, AND 290900Z. https://icons.wunderground.com/data/...01808_5day.gif
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David |
#3
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1. TROPICAL CYCLONE 08P (EIGHT) WARNING NR 003
01 ACTIVE TROPICAL CYCLONE IN SOUTHPAC MAX SUSTAINED WINDS BASED ON ONE-MINUTE AVERAGE WIND RADII VALID OVER OPEN WATER ONLY --- WARNING POSITION: 281200Z --- NEAR 19.2S 161.9E MOVEMENT PAST SIX HOURS - 155 DEGREES AT 16 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 RADIUS OF 034 KT WINDS - 210 NM NORTHEAST QUADRANT 160 NM SOUTHEAST QUADRANT 050 NM SOUTHWEST QUADRANT 120 NM NORTHWEST QUADRANT REPEAT POSIT: 19.2S 161.9E --- FORECASTS: 12 HRS, VALID AT: 290000Z --- 20.7S 162.8E MAX SUSTAINED WINDS - 035 KT, GUSTS 045 KT WIND RADII VALID OVER OPEN WATER ONLY RADIUS OF 034 KT WINDS - 300 NM NORTHEAST QUADRANT 225 NM SOUTHEAST QUADRANT 075 NM SOUTHWEST QUADRANT 115 NM NORTHWEST QUADRANT VECTOR TO 24 HR POSIT: 160 DEG/ 11 KTS --- 24 HRS, VALID AT: 291200Z --- 22.7S 163.6E MAX SUSTAINED WINDS - 040 KT, GUSTS 050 KT WIND RADII VALID OVER OPEN WATER ONLY RADIUS OF 034 KT WINDS - 290 NM NORTHEAST QUADRANT 270 NM SOUTHEAST QUADRANT 115 NM SOUTHWEST QUADRANT 030 NM NORTHWEST QUADRANT VECTOR TO 36 HR POSIT: 170 DEG/ 13 KTS --- 36 HRS, VALID AT: 300000Z --- 25.3S 164.1E MAX SUSTAINED WINDS - 040 KT, GUSTS 050 KT WIND RADII VALID OVER OPEN WATER ONLY RADIUS OF 034 KT WINDS - 265 NM NORTHEAST QUADRANT 295 NM SOUTHEAST QUADRANT 105 NM SOUTHWEST QUADRANT 015 NM NORTHWEST QUADRANT VECTOR TO 48 HR POSIT: 175 DEG/ 15 KTS --- EXTENDED OUTLOOK: 48 HRS, VALID AT: 301200Z --- 28.3S 164.5E MAX SUSTAINED WINDS - 045 KT, GUSTS 055 KT WIND RADII VALID OVER OPEN WATER ONLY BECOMING EXTRATROPICAL RADIUS OF 034 KT WINDS - 245 NM NORTHEAST QUADRANT 320 NM SOUTHEAST QUADRANT 175 NM SOUTHWEST QUADRANT 040 NM NORTHWEST QUADRANT VECTOR TO 72 HR POSIT: 170 DEG/ 20 KTS --- 72 HRS, VALID AT: 311200Z --- 36.0S 166.3E MAX SUSTAINED WINDS - 050 KT, GUSTS 065 KT WIND RADII VALID OVER OPEN WATER ONLY EXTRATROPICAL RADIUS OF 050 KT WINDS - 090 NM NORTHEAST QUADRANT 010 NM SOUTHEAST QUADRANT 050 NM SOUTHWEST QUADRANT 070 NM NORTHWEST QUADRANT RADIUS OF 034 KT WINDS - 300 NM NORTHEAST QUADRANT 350 NM SOUTHEAST QUADRANT 215 NM SOUTHWEST QUADRANT 165 NM NORTHWEST QUADRANT --- REMARKS: 281500Z POSITION NEAR 19.6S 162.1E. TROPICAL CYCLONE 08P (EIGHT), LOCATED APPROXIMATELY 293 NM NORTHWEST OF NOUMEA, NEW CALEDONIA, HAS TRACKED SOUTH- SOUTHEASTWARD AT 16 KNOTS OVER THE PAST SIX HOURS. ANIMATED ENHANCED INFRARED SATELLITE IMAGERY SHOWS TC 08S IS BEING INCREASINGLY SHEARED, WITH A PARTIALLY EXPOSED LOW LEVEL CIRCULATION CENTER LOCATED TO THE NORTH OF FLARING CONVECTION. THE INITIAL POSITION IS BASED, WITH LOW CONFIDENCE, ON A LLCC AND LOW LEVEL BANDING WRAPPING INTO THE CENTER IN A 281044Z AMSU 89 GHZ IMAGE. THE INITIAL INTENSITY IS BASED ON THE DVORAK ESTIMATE OF T2.5 FROM PGTW. UPPER LEVEL ANALYSIS INDICATES THE CYCLONE IS IN AN AREA OF STRONG (40- KNOT PLUS) VWS, SLIGHTLY OFFSET BY STRONG POLEWARD AND EQUATORWARD OUTFLOW THAT IS PROVIDING VENTILATION TO THE ASSOCIATED WEAK CONVECTION, ISOLATED IN THE SOUTHERN SEMICIRCLE OF THE SYSTEM. TC 08S IS TRACKING ALONG THE WESTERN PERIPHERY OF A STR TO THE EAST. IT IS EXPECTED TO MAINTAIN OR SLIGHTLY INCREASE IN INTENSITY AS IT ACCELERATES POLEWARD AND BECOMES EMBDEDDED IN AN APPROACHING MIDLATITUDE TROUGH. BY TAU 48, THE CYCLONE WILL BEGIN EXTRA TROPICAL TRANSITION (ETT) AS IT GETS EMBEDDED IN THE COLD BAROCLINIC ZONE. CONCURRENTLY, TC 08S WILL SLIGHTLY INTENSIFY AS IT GETS ABSORBED IN THE STRONG MID-LATITUDE WIND FIELD, AND THE WIND FIELD WILL EXPAND, WITH STRONGER WINDS DISPLACED FURTHER FROM THE CENTER, INTO A COLD CORE LOW PRESSURE SYSTEM. TC 08S WILL COMPLETE ETT BY TAU 72. THE AVAILABLE NUMERIC GUIDANCE IS IN TIGHT AGREEMENT PREDICTING ACCELERATING POLEWARD MOTION, LENDING HIGH CONFIDENCE TO THE JTWC TRACK FORECAST. MAXIMUM SIGNIFICANT WAVE HEIGHT AT 281200Z IS 18 FEET. NEXT WARNINGS AT 282100Z, 290300Z, 290900Z AND 291500Z. https://icons.wunderground.com/data/...01808_5day.gif
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David |
#4
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1. TROPICAL CYCLONE 08P (FEHI) WARNING NR 005
01 ACTIVE TROPICAL CYCLONE IN SOUTHPAC MAX SUSTAINED WINDS BASED ON ONE-MINUTE AVERAGE WIND RADII VALID OVER OPEN WATER ONLY --- WARNING POSITION: 290000Z --- NEAR 19.5S 162.4E MOVEMENT PAST SIX HOURS - 155 DEGREES AT 13 KTS POSITION ACCURATE TO WITHIN 030 NM POSITION BASED ON CENTER LOCATED BY SATELLITE PRESENT WIND DISTRIBUTION: MAX SUSTAINED WINDS - 050 KT, GUSTS 065 KT WIND RADII VALID OVER OPEN WATER ONLY RADIUS OF 050 KT WINDS - 030 NM NORTHEAST QUADRANT 000 NM SOUTHEAST QUADRANT 000 NM SOUTHWEST QUADRANT 030 NM NORTHWEST QUADRANT RADIUS OF 034 KT WINDS - 195 NM NORTHEAST QUADRANT 160 NM SOUTHEAST QUADRANT 085 NM SOUTHWEST QUADRANT 130 NM NORTHWEST QUADRANT REPEAT POSIT: 19.5S 162.4E --- FORECASTS: 12 HRS, VALID AT: 291200Z --- 21.7S 163.2E MAX SUSTAINED WINDS - 050 KT, GUSTS 065 KT WIND RADII VALID OVER OPEN WATER ONLY RADIUS OF 050 KT WINDS - 050 NM NORTHEAST QUADRANT 000 NM SOUTHEAST QUADRANT 000 NM SOUTHWEST QUADRANT 030 NM NORTHWEST QUADRANT RADIUS OF 034 KT WINDS - 190 NM NORTHEAST QUADRANT 225 NM SOUTHEAST QUADRANT 160 NM SOUTHWEST QUADRANT 060 NM NORTHWEST QUADRANT VECTOR TO 24 HR POSIT: 170 DEG/ 14 KTS --- 24 HRS, VALID AT: 300000Z --- 24.4S 163.7E MAX SUSTAINED WINDS - 045 KT, GUSTS 055 KT WIND RADII VALID OVER OPEN WATER ONLY RADIUS OF 034 KT WINDS - 155 NM NORTHEAST QUADRANT 250 NM SOUTHEAST QUADRANT 175 NM SOUTHWEST QUADRANT 050 NM NORTHWEST QUADRANT VECTOR TO 36 HR POSIT: 175 DEG/ 17 KTS --- 36 HRS, VALID AT: 301200Z --- 27.7S 163.9E MAX SUSTAINED WINDS - 040 KT, GUSTS 050 KT WIND RADII VALID OVER OPEN WATER ONLY BECOMING EXTRATROPICAL RADIUS OF 034 KT WINDS - 160 NM NORTHEAST QUADRANT 260 NM SOUTHEAST QUADRANT 165 NM SOUTHWEST QUADRANT 080 NM NORTHWEST QUADRANT VECTOR TO 48 HR POSIT: 175 DEG/ 18 KTS --- EXTENDED OUTLOOK: 48 HRS, VALID AT: 310000Z --- 31.2S 164.3E MAX SUSTAINED WINDS - 045 KT, GUSTS 055 KT WIND RADII VALID OVER OPEN WATER ONLY BECOMING EXTRATROPICAL RADIUS OF 034 KT WINDS - 165 NM NORTHEAST QUADRANT 260 NM SOUTHEAST QUADRANT 165 NM SOUTHWEST QUADRANT 085 NM NORTHWEST QUADRANT VECTOR TO 72 HR POSIT: 160 DEG/ 22 KTS --- 72 HRS, VALID AT: 010000Z --- 39.3S 168.2E MAX SUSTAINED WINDS - 050 KT, GUSTS 065 KT WIND RADII VALID OVER OPEN WATER ONLY EXTRATROPICAL RADIUS OF 050 KT WINDS - 045 NM NORTHEAST QUADRANT 045 NM SOUTHEAST QUADRANT 025 NM SOUTHWEST QUADRANT 050 NM NORTHWEST QUADRANT RADIUS OF 034 KT WINDS - 175 NM NORTHEAST QUADRANT 255 NM SOUTHEAST QUADRANT 165 NM SOUTHWEST QUADRANT 085 NM NORTHWEST QUADRANT --- REMARKS: 290300Z POSITION NEAR 20.1S 162.6E. TROPICAL CYCLONE 08P (FEHI), LOCATED APPROXIMATELY 260 NM NORTHWEST OF NOUMEA, NEW CALEDONIA, HAS TRACKED SOUTH- SOUTHEASTWARD AT 13 KNOTS OVER THE PAST SIX HOURS. ANIMATED MULTI- SPECTRAL SATELLITE IMAGERY (MSI) DEPICTS CURVED BANDING WRAPPING INTO A PARTIALLY EXPOSED LOW LEVEL CIRCULATION CENTER (LLCC) NEAR THE POLEWARD END OF AN ACTIVE SOUTH PACIFIC CONVERGENCE ZONE. THE INITIAL POSITION IS BASED ON THE EXPOSED LLCC IN MSI, AND SUPPORTED BY A PAIR OF RECENT ASCAT PASSES, WHICH ALSO PROVIDED UPDATED WIND RADII INFORMATION. THE INITIAL INTENSITY IS RAISED TO 50 KNOTS, BASED ON THE PGTW DVORAK ESTIMATE OF T3.5 FROM PGTW USING SHEAR METHOD, AS WELL AS A T3.0 FROM NFFN, AND IS SUPPORTED BY ASCAT DATA, SATCON ESTIMATED 55 KTS, MULTI-PLATFORM WIND ANALYSIS 49 KNOTS, AND NEARBY SURFACE OBSERVATIONS. UPPER LEVEL ANALYSIS INDICATES THE VERTICAL WIND SHEAR (VWS) IS STILL HIGH, BUT HAS MODERATED SLIGHTLY OVER THE PAST SIX HOURS. POLEWARD OUTFLOW IS ALSO ROBUST. TC FEHI IS TRACKING ALONG THE WESTERN PERIPHERY OF A SUB-TROPICAL RIDGE TO THE EAST. GIVEN THE HIGH LEVEL OF VWS, IT IS POSSIBLE THAT 08P MAY DISSIPATE AS A CLOSED LOW PRIOR TO THE END OF THE FORECAST PERIOD; HOWEVER, MOST MODELS ARE MAINTAINING THE CIRCULATION. GUIDANCE INDICATES FEHI SHOULD REMAIN NEAR 45 TO 50 KNOTS OVER THE NEXT 24 HOURS UNTIL HIGHER VWS VALUES RESUME AND SST VALUES BECOME MARGINAL. BY TAU 36, TC 08P WILL BEGIN EXTRA TROPICAL TRANSITION (ETT) AS IT INTERACTS WITH THE BAROCLINIC ZONE. ETT WILL COMPLETE BY TAU 72, AND MODELS ARE INDICATING THE SYSTEM WILL SLIGHTLY RE-INTENSIFY DUE TO BAROCLINIC ENERGY CONVERSION AS IT ENTERS THE MID-LATITUDES. THE AVAILABLE NUMERICAL GUIDANCE IS IN TIGHT AGREEMENT, LENDING HIGH CONFIDENCE TO THE JTWC TRACK FORECAST. MAXIMUM SIGNIFICANT WAVE HEIGHT AT 290000Z IS 20 FEET. NEXT WARNINGS AT 290900Z, 291500Z, 292100Z, AND 300300Z. https://icons.wunderground.com/data/...01808_5day.gif
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David |
#5
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1. TROPICAL CYCLONE 08P (FEHI) WARNING NR 007
01 ACTIVE TROPICAL CYCLONE IN SOUTHPAC MAX SUSTAINED WINDS BASED ON ONE-MINUTE AVERAGE WIND RADII VALID OVER OPEN WATER ONLY --- WARNING POSITION: 291200Z --- NEAR 21.3S 163.2E MOVEMENT PAST SIX HOURS - 170 DEGREES AT 09 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 - 170 NM NORTHEAST QUADRANT 165 NM SOUTHEAST QUADRANT 115 NM SOUTHWEST QUADRANT 095 NM NORTHWEST QUADRANT REPEAT POSIT: 21.3S 163.2E --- FORECASTS: 12 HRS, VALID AT: 300000Z --- 23.9S 163.6E MAX SUSTAINED WINDS - 040 KT, GUSTS 050 KT WIND RADII VALID OVER OPEN WATER ONLY RADIUS OF 034 KT WINDS - 080 NM NORTHEAST QUADRANT 250 NM SOUTHEAST QUADRANT 175 NM SOUTHWEST QUADRANT 020 NM NORTHWEST QUADRANT VECTOR TO 24 HR POSIT: 180 DEG/ 16 KTS --- 24 HRS, VALID AT: 301200Z --- 27.1S 163.7E MAX SUSTAINED WINDS - 040 KT, GUSTS 050 KT WIND RADII VALID OVER OPEN WATER ONLY RADIUS OF 034 KT WINDS - 130 NM NORTHEAST QUADRANT 260 NM SOUTHEAST QUADRANT 155 NM SOUTHWEST QUADRANT 010 NM NORTHWEST QUADRANT VECTOR TO 36 HR POSIT: 175 DEG/ 18 KTS --- 36 HRS, VALID AT: 310000Z --- 30.7S 164.1E MAX SUSTAINED WINDS - 040 KT, GUSTS 050 KT WIND RADII VALID OVER OPEN WATER ONLY BECOMING EXTRATROPICAL RADIUS OF 034 KT WINDS - 220 NM NORTHEAST QUADRANT 265 NM SOUTHEAST QUADRANT 135 NM SOUTHWEST QUADRANT 060 NM NORTHWEST QUADRANT VECTOR TO 48 HR POSIT: 165 DEG/ 23 KTS --- EXTENDED OUTLOOK: 48 HRS, VALID AT: 311200Z --- 35.1S 165.4E MAX SUSTAINED WINDS - 045 KT, GUSTS 055 KT WIND RADII VALID OVER OPEN WATER ONLY EXTRATROPICAL RADIUS OF 034 KT WINDS - 260 NM NORTHEAST QUADRANT 330 NM SOUTHEAST QUADRANT 265 NM SOUTHWEST QUADRANT 200 NM NORTHWEST QUADRANT --- REMARKS: 291500Z POSITION NEAR 22.0S 163.3E. TROPICAL CYCLONE 08P (FEHI), LOCATED APPROXIMATELY 169 NM WEST- NORTHWEST OF NOUMEA, NEW CALEDONIA, HAS TRACKED SOUTHWARD AT 09 KNOTS OVER THE PAST SIX HOURS. ANIMATED INFRARED SATELLITE IMAGERY DEPICTS A LOW LEVEL CIRCULATION CENTER (LLCC) THAT WAS LATER COVERED BY FLARING CONVECTION NEAR THE POLEWARD END OF AN ACTIVE SOUTH PACIFIC CONVERGENCE ZONE. THE INITIAL POSITION IS BASED ON THE INFRARED SATELLITE LOOP, AND SUPPORTED BY A 281119Z AMSU 89 GHZ IMAGE. CONVECTION HAS FLARED IN THE PAST SIX HOURS, THOUGH THERE IS ONLY AN ISOLATED AREA OF DEEP CONVECTION TO THE WEST OF THE CENTER POSITION. THE INITIAL INTENSITY IS LOWERED TO 40 KNOTS, IN AGREEMENT WITH THE PGTW 281200Z 2.5/3.0 FIX AND NEARBY OBSERVATIONS. UPPER LEVEL ANALYSIS INDICATES THE VERTICAL WIND SHEAR (VWS) IS STRONG (OVER 25 KNOTS) AND SEA SURFACE TEMPERATURES ARE MARGINAL (26-27 DEGREES C) PREVENTING FURTHER DEVELOPMENT. ROBUST OUTFLOW STILL PROVIDES STRONG DIVERGENCE ALOFT FOR THE SYSTEM. TC FEHI IS TRACKING SOUTHWARD ALONG THE WESTERN PERIPHERY OF A SUBTROPICAL RIDGE TO THE EAST. INTENSITY GUIDANCE INDICATES FEHI SHOULD REMAIN NEAR 40 KNOTS OVER THE NEXT 24 HOURS. AROUND TAU 30-36, TC 08P WILL BEGIN EXTRA TROPICAL TRANSITION (ETT) AS IT INTERACTS WITH THE BAROCLINIC ZONE AND AN APPROACHING MIDLATITUDE TROUGH. ETT WILL COMPLETE BY TAU 48, AND MODELS ARE INDICATING THE SYSTEM WILL SLIGHTLY RE-INTENSIFY AS A COLD-CORE SYSTEM AND EXPAND ITS WIND FIELD AS IT ENTERS THE MID- LATITUDES. THE AVAILABLE NUMERICAL GUIDANCE IS IN TIGHT AGREEMENT, LENDING HIGH CONFIDENCE TO THE JTWC TRACK FORECAST. MAXIMUM SIGNIFICANT WAVE HEIGHT AT 291200Z IS 20 FEET. NEXT WARNINGS AT 292100Z, 300300Z, 300900Z AND 301500Z. https://icons.wunderground.com/data/...01808_5day.gif
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David |
#6
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1. TROPICAL CYCLONE 08P (FEHI) WARNING NR 008
01 ACTIVE TROPICAL CYCLONE IN SOUTHPAC MAX SUSTAINED WINDS BASED ON ONE-MINUTE AVERAGE WIND RADII VALID OVER OPEN WATER ONLY --- WARNING POSITION: 291800Z --- NEAR 23.4S 163.9E MOVEMENT PAST SIX HOURS - 165 DEGREES AT 23 KTS POSITION ACCURATE TO WITHIN 060 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 - 120 NM NORTHEAST QUADRANT 125 NM SOUTHEAST QUADRANT 105 NM SOUTHWEST QUADRANT 110 NM NORTHWEST QUADRANT REPEAT POSIT: 23.4S 163.9E --- FORECASTS: 12 HRS, VALID AT: 300600Z --- 27.9S 164.0E MAX SUSTAINED WINDS - 040 KT, GUSTS 050 KT WIND RADII VALID OVER OPEN WATER ONLY RADIUS OF 034 KT WINDS - 105 NM NORTHEAST QUADRANT 255 NM SOUTHEAST QUADRANT 155 NM SOUTHWEST QUADRANT 010 NM NORTHWEST QUADRANT VECTOR TO 24 HR POSIT: 180 DEG/ 23 KTS --- 24 HRS, VALID AT: 301800Z --- 32.4S 164.2E MAX SUSTAINED WINDS - 045 KT, GUSTS 055 KT WIND RADII VALID OVER OPEN WATER ONLY BECOMING EXTRATROPICAL RADIUS OF 034 KT WINDS - 205 NM NORTHEAST QUADRANT 260 NM SOUTHEAST QUADRANT 105 NM SOUTHWEST QUADRANT 030 NM NORTHWEST QUADRANT VECTOR TO 36 HR POSIT: 160 DEG/ 26 KTS --- 36 HRS, VALID AT: 310600Z --- 37.2S 166.4E MAX SUSTAINED WINDS - 050 KT, GUSTS 065 KT WIND RADII VALID OVER OPEN WATER ONLY BECOMING EXTRATROPICAL RADIUS OF 050 KT WINDS - 035 NM NORTHEAST QUADRANT 005 NM SOUTHEAST QUADRANT 020 NM SOUTHWEST QUADRANT 020 NM NORTHWEST QUADRANT RADIUS OF 034 KT WINDS - 250 NM NORTHEAST QUADRANT 295 NM SOUTHEAST QUADRANT 165 NM SOUTHWEST QUADRANT 135 NM NORTHWEST QUADRANT VECTOR TO 48 HR POSIT: 150 DEG/ 29 KTS --- EXTENDED OUTLOOK: 48 HRS, VALID AT: 311800Z --- 42.3S 170.1E MAX SUSTAINED WINDS - 050 KT, GUSTS 065 KT WIND RADII VALID OVER OPEN WATER ONLY EXTRATROPICAL RADIUS OF 050 KT WINDS - 100 NM NORTHEAST QUADRANT 065 NM SOUTHEAST QUADRANT 035 NM SOUTHWEST QUADRANT 045 NM NORTHWEST QUADRANT RADIUS OF 034 KT WINDS - 320 NM NORTHEAST QUADRANT 335 NM SOUTHEAST QUADRANT 275 NM SOUTHWEST QUADRANT 280 NM NORTHWEST QUADRANT --- REMARKS: 292100Z POSITION NEAR 24.5S 163.9E. TROPICAL CYCLONE 08P (FEHI), LOCATED APPROXIMATELY 145 NM WEST- SOUTHWEST OF NOUMEA, NEW CALEDONI, HAS TRACKED SOUTH- SOUTHEASTWARD AT 23 KNOTS OVER THE PAST SIX HOURS. ANIMATED INFRARED SATELLITE IMAGERY DEPICTS A PARTIALLY EXPOSED LOW LEVEL CIRCULATION CENTER (LLCC) WITH DECREASING AND HIGHLY SHEARED DEEP CONVECTIVE ACTIVITY. THE INITIAL POSITION IS PLACED WITH LOW CONFIDENCE BASED ON THE EIR IMAGERY LOOP AND IS SUPPORTED BY 291839Z GPM 91 GHZ MICROWAVE IMAGE DEPICTING AN EXPOSED LLCC WITH FLARING DEEP CONVECTION TO THE SOUTH AND EAST OF THE CENTER. THE INITIAL INTENSITY HAS MAINTAINED AT 40 KNOTS AND IS BASED ON MULTI- AGENCY DVORAK CURRENT INTENSITY ESTIMATES RANGING OF T2.0 (30 KNOTS) FROM KNES AND PGTW, HEDGED SLIGHTLY HIGHER BASED ON A 291235Z ASCAT SCATTEROMETER PASS INDICATING 40 KNOT WINDS IN THE SOUTHERN HEMISPHERE OF THE SYSTEM, AN ADVANCED DVORAK TECHNIQUE ESTIMATE OF T2.7 (39 KNOTS) AND A MULTI-SENSOR SATELLITE CONSENSUS ESTIMATE OF 47 KNOTS. ENVIRONMENTAL ANALYSIS INDICATES THAT TC FEHI HAS LIKELY COMPLETED TRANSITION TO A SUB-TROPICAL SYSTEM. TC FEHI CURRENTLY LIES UNDER STRONG (35-40 KNOTS) VWS AND IS TRACKING OVER ONLY MARGINAL (26-27 DEGREES C) SSTS. AN AMSU THERMAL CROSS SECTION INDICATES A STRONG WARM ANOMALY IN THE NEAR-SURFACE LAYER, WITH A WEAK WARM ANOMALY PRESENT IN THE UPPER LEVELS, SUPPORTING THE ASSESSMENT THAT TC FEHI IS IN FACT SUB-TROPICAL. THE STRONG VWS IS BEING OFFSET BY STRONG DIVERGENCE ALOFT WHICH IS HELPING TO MAINTAIN THE INTENSITY AS THE SYSTEM MOVES RAPIDLY SOUTHWARD ALONG THE WESTERN OF A SUBTROPICAL RIDGE (STR) TO THE EAST, AHEAD OF AN APPROACHING MID-LATITUDE TROUGH. TC FEHI IS FORECAST TO CONTINUE TRACKING RAPIDLY SOUTHWARD BEFORE TURNING MORE SOUTHEASTWARD BEYOND TAU 24. TC FEHI IS FORECAST TO SLOWLY INTENSITY FROM TAU 24 TO 48, AS IT BEGINS TO UNDERGO EXTRA TROPICAL TRANSITION (ETT) AS IT INTERACTS WITH THE BAROCLINIC ZONE AHEAD OF THE APPROACHING MID- LATITUDE TROUGH. THE SYSTEM IS EXPECTED TO BECOME COMPLETELY EMBEDDED IN THE BAROCLINIC ZONE AND COMPLETE ETT BY TAU 48, AS A 50 KNOT SYSTEM. AVAILABLE NUMERICAL GUIDANCE IS IN TIGHT AGREEMENT THROUGH THE FORECAST PERIOD, LENDING HIGH CONFIDENCE TO THE JTWC TRACK FORECAST. MAXIMUM SIGNIFICANT WAVE HEIGHT AT 291800Z IS 20 FEET. NEXT WARNINGS AT 300300Z, 300900Z, 301500Z AND 302100Z. https://icons.wunderground.com/data/...01808_5day.gif
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David |
#7
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1. TROPICAL CYCLONE 08P (FEHI) WARNING NR 009
01 ACTIVE TROPICAL CYCLONE IN SOUTHPAC MAX SUSTAINED WINDS BASED ON ONE-MINUTE AVERAGE WIND RADII VALID OVER OPEN WATER ONLY --- WARNING POSITION: 300000Z --- NEAR 25.0S 164.1E MOVEMENT PAST SIX HOURS - 175 DEGREES AT 16 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 RADIUS OF 034 KT WINDS - 140 NM NORTHEAST QUADRANT 190 NM SOUTHEAST QUADRANT 070 NM SOUTHWEST QUADRANT 060 NM NORTHWEST QUADRANT REPEAT POSIT: 25.0S 164.1E --- FORECASTS: 12 HRS, VALID AT: 301200Z --- 28.4S 164.1E MAX SUSTAINED WINDS - 035 KT, GUSTS 045 KT WIND RADII VALID OVER OPEN WATER ONLY BECOMING EXTRATROPICAL RADIUS OF 034 KT WINDS - 230 NM NORTHEAST QUADRANT 270 NM SOUTHEAST QUADRANT 160 NM SOUTHWEST QUADRANT 055 NM NORTHWEST QUADRANT VECTOR TO 24 HR POSIT: 180 DEG/ 22 KTS --- 24 HRS, VALID AT: 310000Z --- 32.8S 164.2E MAX SUSTAINED WINDS - 040 KT, GUSTS 050 KT WIND RADII VALID OVER OPEN WATER ONLY BECOMING EXTRATROPICAL RADIUS OF 034 KT WINDS - 265 NM NORTHEAST QUADRANT 290 NM SOUTHEAST QUADRANT 120 NM SOUTHWEST QUADRANT 095 NM NORTHWEST QUADRANT VECTOR TO 36 HR POSIT: 160 DEG/ 25 KTS --- 36 HRS, VALID AT: 311200Z --- 37.6S 166.3E MAX SUSTAINED WINDS - 040 KT, GUSTS 050 KT WIND RADII VALID OVER OPEN WATER ONLY EXTRATROPICAL RADIUS OF 034 KT WINDS - 315 NM NORTHEAST QUADRANT 300 NM SOUTHEAST QUADRANT 175 NM SOUTHWEST QUADRANT 190 NM NORTHWEST QUADRANT --- REMARKS: 300300Z POSITION NEAR 25.8S 164.1E. TROPICAL CYCLONE 08P (FEHI), LOCATED APPROXIMATELY 206 NM SOUTH- SOUTHWEST OF NOUMEA, NEW CALEDONI, HAS TRACKED SOUTHWARD AT 16 KNOTS OVER THE PAST SIX HOURS. ANIMATED MULTISPECTRAL SATELLITE IMAGERY DEPICTS A RAPIDLY WEAKENING SYSTEM WITH A FULLY EXPOSED LOW LEVEL CIRCULATION CENTER (LLCC) WITH HIGHLY SHEARED CONVECTIVE ACTIVITY, AND ONLY WEAK CONVECTIVE BANDS SPIRALING INTO THE LLCC. THE INITIAL POSITION IS PLACED WITH HIGH CONFIDENCE BASED ON THE MULTSPECTRAL IMAGERY LOOP AND IS SUPPORTED BY 292230Z ASMU-B 89 GHZ MICROWAVE IMAGE DEPICTING A VERY WEAK, EXPOSED LLCC WITH LIMITED CONVECTION CONFINED TO THE SOUTHERN PERIPHERY OF THE SYSTEM. THE INITIAL INTENSITY IS ASSESSED AT 35 KNOTS, BASED ON MULTI-AGENCY DVORAK CURRENT INTENSITY ESTIMATES OF T2.0 (30 KNOTS) AND HEDGED SLIGHTLY HIGHER BASED ON A 292232Z SCATTEROMETER PASS INDICATING A COUPLE 40 KNOT WIND BARBS JUST EAST OF THE LLCC. ADVANCED DVORAK TECHNIQUE ESTIMATES ALIGN WITH THE ASSESSED INTENSITY AT T2.3 (33 KNOTS). ENVIRONMENTAL ANALYSIS INDICATES THAT TC FEHI IS TRANSITING THROUGH AN UNFAVORABLE ENVIRONMENT WITH STRONG (35-40 KNOTS) VWS AND IS TRACKING OVER MARGINAL (26 DEGREES C) SSTS. AN AMSU THERMAL CROSS SECTION FROM 292000Z INDICATES A WARM ANOMALIES EXTENDING FROM NEAR THE SURFACE THROUGH THE MIDDLE LEVELS OF THE ATMOSPHERE, INDICATIVE OF A SUBTROPICAL SYSTEM. THE ASSOCIATED PHASE SPACE DIAGRAMS INDICATE THAT THE SYSTEM WILL BEGIN TRANSITIONING TO AN ASYMMETRIC WARM CORE, THEN COLD CORE EXTRA-TROPICAL SYSTEM WITHIN THE NEXT 24 TO 36 HOURS. THE SYSTEM WILL CONTINUE TO MOVE RAPIDLY SOUTHWARD ALONG THE WESTERN OF A SUBTROPICAL RIDGE (STR) TO THE EAST, AHEAD OF AN APPROACHING MID-LATITUDE TROUGH THROUGH THE FORECAST PERIOD, BECOMING EMBEDDED IN THE BAROCLINIC ZONE AND COMPLETING EXTRA-TROPICAL TRANSITION BY TAU 36. TC FEHI WILL INTENSITY SLIGHTLY AS IT UNDERGOES ETT, PEAKING AT 40 KNOTS BY TAU 24. AVAILABLE NUMERICAL GUIDANCE IS IN TIGHT AGREEMENT THROUGH THE FORECAST PERIOD, LENDING HIGH CONFIDENCE TO THE JTWC TRACK FORECAST. MAXIMUM SIGNIFICANT WAVE HEIGHT AT 300000Z IS 20 FEET. NEXT WARNINGS AT 300900Z, 301500Z, 302100Z AND 310300Z. https://icons.wunderground.com/data/...01808_5day.gif
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David |
#8
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1. TROPICAL CYCLONE 08P (FEHI) WARNING NR 010
01 ACTIVE TROPICAL CYCLONE IN SOUTHPAC MAX SUSTAINED WINDS BASED ON ONE-MINUTE AVERAGE WIND RADII VALID OVER OPEN WATER ONLY --- WARNING POSITION: 300600Z --- NEAR 26.4S 163.9E MOVEMENT PAST SIX HOURS - 185 DEGREES AT 14 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 WIND RADII VALID OVER OPEN WATER ONLY BECOMING EXTRATROPICAL RADIUS OF 034 KT WINDS - 130 NM NORTHEAST QUADRANT 190 NM SOUTHEAST QUADRANT 145 NM SOUTHWEST QUADRANT 075 NM NORTHWEST QUADRANT REPEAT POSIT: 26.4S 163.9E --- FORECASTS: 12 HRS, VALID AT: 301800Z --- 30.0S 163.8E MAX SUSTAINED WINDS - 035 KT, GUSTS 045 KT WIND RADII VALID OVER OPEN WATER ONLY BECOMING EXTRATROPICAL RADIUS OF 034 KT WINDS - 210 NM NORTHEAST QUADRANT 240 NM SOUTHEAST QUADRANT 100 NM SOUTHWEST QUADRANT 060 NM NORTHWEST QUADRANT VECTOR TO 24 HR POSIT: 170 DEG/ 21 KTS --- 24 HRS, VALID AT: 310600Z --- 34.2S 164.7E MAX SUSTAINED WINDS - 040 KT, GUSTS 050 KT WIND RADII VALID OVER OPEN WATER ONLY EXTRATROPICAL RADIUS OF 034 KT WINDS - 260 NM NORTHEAST QUADRANT 285 NM SOUTHEAST QUADRANT 130 NM SOUTHWEST QUADRANT 145 NM NORTHWEST QUADRANT --- REMARKS: 300900Z POSITION NEAR 27.3S 163.9E. TROPICAL CYCLONE 08P (FEHI), LOCATED APPROXIMATELY 285 NM SOUTH- SOUTHWEST OF NOUMEA, NEW CALEDONIA, HAS TRACKED SOUTHWARD AT 14 KNOTS OVER THE PAST SIX HOURS. ANIMATED MULTISPECTRAL SATELLITE IMAGERY DEPICTS A RAPIDLY WEAKENING SYSTEM WITH A FULLY EXPOSED LOW LEVEL CIRCULATION CENTER (LLCC) AND HIGHLY SHEARED CONVECTIVE ACTIVITY IN THE POLEWARD SEMI-CIRLE. THE INITIAL POSITION IS PLACED WITH MODERATE CONFIDENCE BASED ON THE ANIMATED MULTSPECTRAL IMAGERY AND SUPPORTED BY A 300526Z SSMIS 91 GHZ IMAGE REVEALING AN EXPOSED BUT ELONGATED CIRCULATION. THE INITIAL INTENSITY IS ASSESSED AT 35 KNOTS, BASED ON A 292232Z SCATTEROMETER PASS SHOWING A COUPLE 40 KNOT WIND BARBS JUST EAST OF THE LLCC FURTHER SUPPORTED BY NEARBY SHIP OBSERVATIONS. ADVANCED DVORAK TECHNIQUE ESTIMATES ALIGN WITH THE ASSESSED INTENSITY AT T2.3 (33 KNOTS). ENVIRONMENTAL ANALYSIS INDICATES THAT TC FEHI IS TRANSITING THROUGH AN UNFAVORABLE ENVIRONMENT WITH STRONG (35-40 KNOTS) VWS AND IS TRACKING OVER MARGINAL (26 DEGREES C) SST. AN AMSU THERMAL CROSS SECTION FROM 300400Z INDICATES A WARM ANOMALY EXTENDING FROM NEAR THE SURFACE THROUGH THE MIDDLE LEVELS OF THE ATMOSPHERE, INDICATIVE OF A SUBTROPICAL SYSTEM. THE ASSOCIATED PHASE SPACE DIAGRAMS INDICATE THAT THE SYSTEM IS TRANSITIONING TO AN ASYMMETRIC WARM CORE, THEN COLD CORE EXTRA-TROPICAL SYSTEM WITHIN THE NEXT 24 TO 36 HOURS. THE SYSTEM WILL CONTINUE TO MOVE RAPIDLY SOUTHWARD ALONG THE WESTERN PERIPHERY OF A SUBTROPICAL RIDGE (STR) TO THE EAST, AHEAD OF A MID- LATITUDE TROUGH THROUGH THE REMAINDER OF THE FORECAST PERIOD, COMING EMBEDDED IN THE BAROCLINIC ZONE AND COMPLETING EXTRA-TROPICAL TRANSITION BY TAU 24. TC FEHI WILL INTENSIFY SLIGHTLY AS IT UNDERGOES ETT, PEAKING AT 40 KNOTS BY TAU 24. AVAILABLE NUMERICAL GUIDANCE IS IN TIGHT AGREEMENT THROUGH THE FORECAST PERIOD, LENDING HIGH CONFIDENCE TO THE JTWC TRACK FORECAST. MAXIMUM SIGNIFICANT WAVE HEIGHT AT 300600Z IS 22 FEET. NEXT WARNINGS AT 301500Z, 302100Z AND 310300Z. https://icons.wunderground.com/data/...01808_5day.gif
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David |
#9
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Final Warning
1. TROPICAL CYCLONE 08P (FEHI) WARNING NR 011
01 ACTIVE TROPICAL CYCLONE IN SOUTHPAC MAX SUSTAINED WINDS BASED ON ONE-MINUTE AVERAGE WIND RADII VALID OVER OPEN WATER ONLY --- WARNING POSITION: 301200Z --- NEAR 28.1S 163.8E MOVEMENT PAST SIX HOURS - 185 DEGREES AT 17 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 WIND RADII VALID OVER OPEN WATER ONLY BECOMING EXTRATROPICAL RADIUS OF 034 KT WINDS - 150 NM NORTHEAST QUADRANT 215 NM SOUTHEAST QUADRANT 135 NM SOUTHWEST QUADRANT 000 NM NORTHWEST QUADRANT REPEAT POSIT: 28.1S 163.8E --- FORECASTS: 12 HRS, VALID AT: 310000Z --- 32.1S 163.8E MAX SUSTAINED WINDS - 040 KT, GUSTS 050 KT WIND RADII VALID OVER OPEN WATER ONLY EXTRATROPICAL RADIUS OF 034 KT WINDS - 260 NM NORTHEAST QUADRANT 285 NM SOUTHEAST QUADRANT 110 NM SOUTHWEST QUADRANT 090 NM NORTHWEST QUADRANT --- REMARKS: 301500Z POSITION NEAR 29.1S 163.8E. TROPICAL CYCLONE 08P (FEHI), LOCATED APPROXIMATELY 238 NM WEST- NORTHWEST OF KINGSTON ISLAND, HAS TRACKED SOUTHWARD AT 17 KNOTS OVER THE PAST SIX HOURS. ANIMATED ENHANCED INFRARED SATELLITE IMAGERY DEPICTS A FULLY EXPOSED LOW LEVEL CIRCULATION CENTER (LLCC) AND A LARGE COMMA-SHAPED AREA OF CONVECTIVE ACTIVITY POLEWARD AND EASTWARD OF THE LLCC. THE INITIAL POSITION IS PLACED WITH MODERATE CONFIDENCE BASED ON THE ANIMATED INFRARED IMAGERY AND SUPPORTED BY A 301057Z MMHS 89 GHZ IMAGE REVEALING AN EXPOSED BUT ELONGATED CIRCULATION. THE INITIAL INTENSITY IS ASSESSED AT 35 KNOTS, BASED ON A PARTIAL 301058Z METOP-B ASCAT PASS SHOWING A BROAD REGION 30- 35 KNOTS EAST OF THE SYSTEM WITH ANOTHER PATCH OF 40 KNOT WINDS APPROXIMATELY 170 NM SOUTHEAST OF THE LLCC. ADVANCED DVORAK TECHNIQUE ESTIMATES ALIGN WITH THE ASSESSED INTENSITY AT T2.3 (33 KNOTS). ENVIRONMENTAL ANALYSIS INDICATES THAT TC FEHI IS TRANSITING THROUGH AN UNFAVORABLE ENVIRONMENT WITH STRONG (35-40 KNOTS) VWS AND IS TRACKING OVER MARGINAL (25 DEGREES C) SST. AN AMSU THERMAL CROSS SECTION FROM 300900Z INDICATES A WARM ANOMALY EXTENDING FROM NEAR THE SURFACE THROUGH THE MIDDLE LEVELS OF THE ATMOSPHERE, INDICATIVE OF A SUBTROPICAL SYSTEM. THE ASSOCIATED PHASE SPACE DIAGRAMS INDICATE THAT THE SYSTEM IS TRANSITIONING FROM AN ASYMMETRIC WARM CORE TO A COLD CORE EXTRA-TROPICAL SYSTEM WITHIN THE NEXT 12 HOURS. THE SYSTEM WILL CONTINUE TO MOVE RAPIDLY SOUTHWARD ALONG THE WESTERN PERIPHERY OF A SUBTROPICAL RIDGE (STR) TO THE EAST, AHEAD OF A MID-LATITUDE TROUGH THROUGH THE REMAINDER OF THE FORECAST PERIOD, BECOMING EMBEDDED IN THE BAROCLINIC ZONE AND COMPLETING EXTRA-TROPICAL TRANSITION BY TAU 12. TC FEHI WILL INTENSIFY SLIGHTLY AS IT UNDERGOES ETT, PEAKING AT 40 KNOTS BY TAU 12. AVAILABLE NUMERICAL GUIDANCE IS IN TIGHT AGREEMENT THROUGH THE FORECAST PERIOD, LENDING HIGH CONFIDENCE TO THE JTWC TRACK FORECAST. 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 301200Z IS 22 FEET. https://icons.wunderground.com/data/...01808_5day.gif
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David |
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