簽到天數: 868 天 [LV.10]以壇為家III
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jrchang5|2019-3-4 22:47
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MFR 04/12Z升格為強烈熱帶氣旋,近中心最大風速達90kts。發展較預期迅速。
ZCZC 246
WTIO30 FMEE 041252 RRA
RSMC / TROPICAL CYCLONE CENTER / LA REUNION
TROPICAL CYCLONE FORECAST WARNING (SOUTH-WEST INDIAN OCEAN)
0.A WARNING NUMBER: 13/10/20182019
1.A INTENSE TROPICAL CYCLONE 10 (HALEH)
2.A POSITION 2019/03/04 AT 1200 UTC:
WITHIN 20 NM RADIUS OF POINT 18.6 S / 72.7 E
(EIGHTEEN DECIMAL SIX DEGREES SOUTH AND
SEVENTY TWO DECIMAL SEVEN DEGREES EAST)
MOVEMENT: SOUTH-SOUTH-WEST 7 KT
3.A DVORAK ANALYSIS: 5.5/5.5/D 1.0/12 H
4.A CENTRAL PRESSURE: 948 HPA
5.A MAX AVERAGE WIND SPEED (10 MN): 90 KT
RADIUS OF MAXIMUM WINDS (RMW): 28 KM
6.A EXTENSION OF WIND BY QUADRANTS (KM):
28 KT NE: 280 SE: 430 SW: 430 NW: 190
34 KT NE: 170 SE: 280 SW: 280 NW: 130
48 KT NE: 90 SE: 110 SW: 90 NW: 90
64 KT NE: 50 SE: 50 SW: 50 NW: 50
7.A FIRST CLOSED ISOBAR (PRESSURE / AVERAGE DIAM): 1001 HPA / 400 KM
8.A VERTICAL EXTENSION OF CYCLONE CIRCULATION: DEEP
1.B FORECASTS:
12H: 2019/03/05 00 UTC: 19.4 S / 72.1 E, VENT MAX= 095 KT, INTENSE
TROPICAL CYCLONE
24H: 2019/03/05 12 UTC: 20.3 S / 71.3 E, VENT MAX= 095 KT, INTENSE
TROPICAL CYCLONE
36H: 2019/03/06 00 UTC: 21.3 S / 70.2 E, VENT MAX= 090 KT, INTENSE
TROPICAL CYCLONE
48H: 2019/03/06 12 UTC: 22.8 S / 68.7 E, VENT MAX= 085 KT, TROPICAL
CYCLONE
60H: 2019/03/07 00 UTC: 23.9 S / 67.6 E, VENT MAX= 075 KT, TROPICAL
CYCLONE
72H: 2019/03/07 12 UTC: 25.1 S / 67.1 E, VENT MAX= 060 KT, SEVERE
TROPICAL STORM
2.B LONGER-RANGE OUTLOOK:
96H: 2019/03/08 12 UTC: 28.2 S / 66.0 E, VENT MAX= 050 KT, SEVERE
TROPICAL STORM
120H: 2019/03/09 12 UTC: 32.4 S / 65.8 E, VENT MAX= 045 KT,
POST-TROPICAL DEPRESSION
2.C ADDITIONAL INFORMATION:
T=CI=5.5
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JTWC則先於04/06Z升格為C3,近中心最大風速105kts;12Z維持同一強度。
17S HALEH
As of 12:00 UTC Mar 04, 2019:
Location: 18.7°S 72.6°E
Maximum Winds: 105 kt
Minimum Central Pressure: 951 mb WTXS31 PGTW 041500
MSGID/GENADMIN/JOINT TYPHOON WRNCEN PEARL HARBOR HI//
SUBJ/TROPICAL CYCLONE 17S (HALEH) WARNING NR 010//
RMKS/
1. TROPICAL CYCLONE 17S (HALEH) WARNING NR 010
01 ACTIVE TROPICAL CYCLONE IN SOUTHIO
MAX SUSTAINED WINDS BASED ON ONE-MINUTE AVERAGE
WIND RADII VALID OVER OPEN WATER ONLY
---
WARNING POSITION:
041200Z --- NEAR 18.7S 72.6E
MOVEMENT PAST SIX HOURS - 210 DEGREES AT 08 KTS
POSITION ACCURATE TO WITHIN 015 NM
POSITION BASED ON EYE FIXED BY SATELLITE
PRESENT WIND DISTRIBUTION:
MAX SUSTAINED WINDS - 105 KT, GUSTS 130 KT
WIND RADII VALID OVER OPEN WATER ONLY
RADIUS OF 064 KT WINDS - 040 NM NORTHEAST QUADRANT
045 NM SOUTHEAST QUADRANT
035 NM SOUTHWEST QUADRANT
025 NM NORTHWEST QUADRANT
RADIUS OF 050 KT WINDS - 075 NM NORTHEAST QUADRANT
080 NM SOUTHEAST QUADRANT
060 NM SOUTHWEST QUADRANT
050 NM NORTHWEST QUADRANT
RADIUS OF 034 KT WINDS - 140 NM NORTHEAST QUADRANT
180 NM SOUTHEAST QUADRANT
120 NM SOUTHWEST QUADRANT
095 NM NORTHWEST QUADRANT
REPEAT POSIT: 18.7S 72.6E
---
FORECASTS:
12 HRS, VALID AT:
050000Z --- 19.6S 72.1E
MAX SUSTAINED WINDS - 110 KT, GUSTS 135 KT
WIND RADII VALID OVER OPEN WATER ONLY
RADIUS OF 064 KT WINDS - 040 NM NORTHEAST QUADRANT
050 NM SOUTHEAST QUADRANT
040 NM SOUTHWEST QUADRANT
035 NM NORTHWEST QUADRANT
RADIUS OF 050 KT WINDS - 070 NM NORTHEAST QUADRANT
085 NM SOUTHEAST QUADRANT
070 NM SOUTHWEST QUADRANT
055 NM NORTHWEST QUADRANT
RADIUS OF 034 KT WINDS - 150 NM NORTHEAST QUADRANT
215 NM SOUTHEAST QUADRANT
170 NM SOUTHWEST QUADRANT
105 NM NORTHWEST QUADRANT
VECTOR TO 24 HR POSIT: 215 DEG/ 06 KTS
---
24 HRS, VALID AT:
051200Z --- 20.6S 71.4E
MAX SUSTAINED WINDS - 110 KT, GUSTS 135 KT
WIND RADII VALID OVER OPEN WATER ONLY
RADIUS OF 064 KT WINDS - 040 NM NORTHEAST QUADRANT
050 NM SOUTHEAST QUADRANT
050 NM SOUTHWEST QUADRANT
040 NM NORTHWEST QUADRANT
RADIUS OF 050 KT WINDS - 060 NM NORTHEAST QUADRANT
090 NM SOUTHEAST QUADRANT
080 NM SOUTHWEST QUADRANT
060 NM NORTHWEST QUADRANT
RADIUS OF 034 KT WINDS - 160 NM NORTHEAST QUADRANT
250 NM SOUTHEAST QUADRANT
210 NM SOUTHWEST QUADRANT
110 NM NORTHWEST QUADRANT
VECTOR TO 36 HR POSIT: 225 DEG/ 07 KTS
---
36 HRS, VALID AT:
060000Z --- 21.6S 70.3E
MAX SUSTAINED WINDS - 105 KT, GUSTS 130 KT
WIND RADII VALID OVER OPEN WATER ONLY
RADIUS OF 064 KT WINDS - 040 NM NORTHEAST QUADRANT
050 NM SOUTHEAST QUADRANT
050 NM SOUTHWEST QUADRANT
040 NM NORTHWEST QUADRANT
RADIUS OF 050 KT WINDS - 060 NM NORTHEAST QUADRANT
100 NM SOUTHEAST QUADRANT
080 NM SOUTHWEST QUADRANT
060 NM NORTHWEST QUADRANT
RADIUS OF 034 KT WINDS - 150 NM NORTHEAST QUADRANT
240 NM SOUTHEAST QUADRANT
210 NM SOUTHWEST QUADRANT
110 NM NORTHWEST QUADRANT
VECTOR TO 48 HR POSIT: 220 DEG/ 09 KTS
---
EXTENDED OUTLOOK:
48 HRS, VALID AT:
061200Z --- 22.9S 69.1E
MAX SUSTAINED WINDS - 100 KT, GUSTS 125 KT
WIND RADII VALID OVER OPEN WATER ONLY
RADIUS OF 064 KT WINDS - 040 NM NORTHEAST QUADRANT
050 NM SOUTHEAST QUADRANT
050 NM SOUTHWEST QUADRANT
040 NM NORTHWEST QUADRANT
RADIUS OF 050 KT WINDS - 070 NM NORTHEAST QUADRANT
110 NM SOUTHEAST QUADRANT
080 NM SOUTHWEST QUADRANT
060 NM NORTHWEST QUADRANT
RADIUS OF 034 KT WINDS - 150 NM NORTHEAST QUADRANT
240 NM SOUTHEAST QUADRANT
200 NM SOUTHWEST QUADRANT
120 NM NORTHWEST QUADRANT
VECTOR TO 72 HR POSIT: 210 DEG/ 09 KTS
---
72 HRS, VALID AT:
071200Z --- 26.1S 67.1E
MAX SUSTAINED WINDS - 085 KT, GUSTS 105 KT
WIND RADII VALID OVER OPEN WATER ONLY
RADIUS OF 064 KT WINDS - 050 NM NORTHEAST QUADRANT
060 NM SOUTHEAST QUADRANT
050 NM SOUTHWEST QUADRANT
040 NM NORTHWEST QUADRANT
RADIUS OF 050 KT WINDS - 090 NM NORTHEAST QUADRANT
110 NM SOUTHEAST QUADRANT
090 NM SOUTHWEST QUADRANT
060 NM NORTHWEST QUADRANT
RADIUS OF 034 KT WINDS - 200 NM NORTHEAST QUADRANT
250 NM SOUTHEAST QUADRANT
210 NM SOUTHWEST QUADRANT
130 NM NORTHWEST QUADRANT
VECTOR TO 96 HR POSIT: 200 DEG/ 10 KTS
---
LONG RANGE OUTLOOK:
---
96 HRS, VALID AT:
081200Z --- 30.0S 65.6E
MAX SUSTAINED WINDS - 070 KT, GUSTS 085 KT
WIND RADII VALID OVER OPEN WATER ONLY
RADIUS OF 064 KT WINDS - 020 NM NORTHEAST QUADRANT
030 NM SOUTHEAST QUADRANT
020 NM SOUTHWEST QUADRANT
000 NM NORTHWEST QUADRANT
RADIUS OF 050 KT WINDS - 090 NM NORTHEAST QUADRANT
100 NM SOUTHEAST QUADRANT
060 NM SOUTHWEST QUADRANT
040 NM NORTHWEST QUADRANT
RADIUS OF 034 KT WINDS - 260 NM NORTHEAST QUADRANT
260 NM SOUTHEAST QUADRANT
180 NM SOUTHWEST QUADRANT
120 NM NORTHWEST QUADRANT
VECTOR TO 120 HR POSIT: 185 DEG/ 12 KTS
---
120 HRS, VALID AT:
091200Z --- 34.8S 65.3E
MAX SUSTAINED WINDS - 055 KT, GUSTS 070 KT
WIND RADII VALID OVER OPEN WATER ONLY
BECOMING EXTRATROPICAL
RADIUS OF 050 KT WINDS - 060 NM NORTHEAST QUADRANT
040 NM SOUTHEAST QUADRANT
020 NM SOUTHWEST QUADRANT
010 NM NORTHWEST QUADRANT
RADIUS OF 034 KT WINDS - 180 NM NORTHEAST QUADRANT
190 NM SOUTHEAST QUADRANT
170 NM SOUTHWEST QUADRANT
160 NM NORTHWEST QUADRANT
---
REMARKS:
041500Z POSITION NEAR 18.9S 72.5E.
TROPICAL CYCLONE (TC) 17S (HALEH), LOCATED APPROXIMATELY 870 NM EAST
OF PORT LOUIS, MAURITIUS, HAS TRACKED SOUTH-SOUTHWESTWARD AT 08
KNOTS (KTS) OVER THE PAST SIX HOURS. ANIMATED MULTISPECTRAL
SATELLITE IMAGERY SHOWS THE 25-30 NM WIDE EYE HAS PERSISTED FOR THE
PAST SIX HOURS AND THE CLOUD FIELD HAS REMAINED FAIRLY SYMMETRIC.
THE INITIAL POSITION IS BASED, WITH HIGH CONFIDENCE, ON THE MSI LOOP
AND AN EYE FEATURE IN A 041130Z SSMIS 89 GHZ MICROWAVE IMAGE. THE
INITIAL INTENSITY OF 105 KTS IS CONSISTENT WITH MULTI-AGENCY DVORAK
CURRENT INTENSITY ESTIMATES OF T5.5 (102 KTS). THE ENVIRONMENT IS
FAVORABLE WITH EXCELLENT POLEWARD OUTFLOW, LOW (10-15 KT) VERTICAL
WIND SHEAR (VWS), AND WARM (28-29 CELSIUS) SEA SURFACE TEMPERATURE
(SST). FOR THE DURATION OF THE FORECAST, TC 17S WILL TRACK ALONG THE
PERIPHERY OF A SUBTROPICAL RIDGE (STR), CURRENTLY LOCATED TO THE
SOUTHEAST. AROUND TAU 96, THE TRACK WILL GRADUALLY SHIFT FROM
SOUTHWESTWARD TO SOUTHWARD AS TC 17S ROUNDS THE STR AXIS. THROUGH
TAU 48, THE ENVIRONMENT IS EXPECTED TO REMAIN SUPPORTIVE AND THE
INTENSITY SHOULD REMAIN AT 100 KTS OR GREATER THROUGH THAT PERIOD.
AFTER TAU 48, A COMBINATION OF DIMINISHED OUTFLOW, INCREASED VWS,
AND COOLER SSTS ARE EXPECTED TO CAUSE THE CYCLONE TO STEADILY
WEAKEN, FALLING TO 55 KTS BY TAU 120. BETWEEN TAU 96 AND 120, TC 17S
IS EXPECTED TO BEGIN EXTRATROPICAL TRANSITION AS IT MOVES INTO THE
MID-LATITUDE BAROCLINIC ZONE. WITH THE EXCEPTION OF NAVGEM, WHICH
LIES EAST OF THE OTHER MEMBERS, NUMERICAL MODEL GUIDANCE IS IN GOOD
AGREEMENT THROUGHOUT THE FORECAST. TO OFFSET THE INFLUENCE OF
NAVGEM, THE JTWC TRACK FORECAST IS HEDGED JUST WEST OF THE CONSENSUS
TRACK, WITH GOOD CONFIDENCE BASED ON STRONG AGREEMENT IN THE BULK OF
THE MODEL GUIDANCE. MAXIMUM SIGNIFICANT WAVE HEIGHT AT 041200Z IS 43
FEET. NEXT WARNINGS AT 042100Z, 050300Z, 050900Z AND 051500Z.//
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