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本帖最后由 Ragasa 于 2026-3-5 05:32 编辑
WTXS31 PGTW 042100
MSGID/GENADMIN/JOINT TYPHOON WRNCEN PEARL HARBOR HI//
SUBJ/TROPICAL CYCLONE 25S (TWENTYFIVE) WARNING NR 003//
RMKS/
1. TROPICAL CYCLONE 25S (TWENTYFIVE) 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:
041800Z --- NEAR 11.0S 111.4E
MOVEMENT PAST SIX HOURS - 070 DEGREES AT 12 KTS
POSITION ACCURATE TO WITHIN 030 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 - 060 NM NORTHEAST QUADRANT
035 NM SOUTHEAST QUADRANT
035 NM SOUTHWEST QUADRANT
060 NM NORTHWEST QUADRANT
REPEAT POSIT: 11.0S 111.4E
---
FORECASTS:
12 HRS, VALID AT:
050600Z --- 11.2S 115.4E
MAX SUSTAINED WINDS - 040 KT, GUSTS 050 KT
WIND RADII VALID OVER OPEN WATER ONLY
RADIUS OF 034 KT WINDS - 070 NM NORTHEAST QUADRANT
010 NM SOUTHEAST QUADRANT
020 NM SOUTHWEST QUADRANT
070 NM NORTHWEST QUADRANT
VECTOR TO 24 HR POSIT: 115 DEG/ 19 KTS
---
24 HRS, VALID AT:
051800Z --- 12.7S 119.0E
MAX SUSTAINED WINDS - 035 KT, GUSTS 045 KT
WIND RADII VALID OVER OPEN WATER ONLY
RADIUS OF 034 KT WINDS - 060 NM NORTHEAST QUADRANT
010 NM SOUTHEAST QUADRANT
010 NM SOUTHWEST QUADRANT
030 NM NORTHWEST QUADRANT
VECTOR TO 36 HR POSIT: 130 DEG/ 12 KTS
---
36 HRS, VALID AT:
060600Z --- 14.2S 121.0E
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 - 065 NM NORTHEAST QUADRANT
020 NM SOUTHEAST QUADRANT
010 NM SOUTHWEST QUADRANT
005 NM NORTHWEST QUADRANT
VECTOR TO 48 HR POSIT: 180 DEG/ 04 KTS
---
EXTENDED OUTLOOK:
48 HRS, VALID AT:
061800Z --- 15.0S 121.0E
MAX SUSTAINED WINDS - 030 KT, GUSTS 040 KT
WIND RADII VALID OVER OPEN WATER ONLY
DISSIPATED AS A SIGNIFICANT TROPICAL CYCLONE OVER WATER
---
REMARKS:
042100Z POSITION NEAR 11.0S 112.4E.
04MAR26. TROPICAL CYCLONE 25S (TWENTYFIVE), LOCATED APPROXIMATELY
695 NM NORTH-NORTHWEST OF LEARMONTH, AUSTRALIA, HAS TRACKED EAST-
NORTHEASTWARD AT 12 KNOTS OVER THE PAST SIX HOURS.
MINIMUM CENTRAL PRESSURE AT 041800Z IS 998 MB. MAXIMUM
SIGNIFICANT WAVE HEIGHT AT 041800Z IS 15 FEET. NEXT WARNINGS AT
050300Z, 050900Z, 051500Z AND 052100Z.//
NNNN
- WDXS31 PGTW 042100
- MSGID/GENADMIN/JOINT TYPHOON WRNCEN PEARL HARBOR HI//
- SUBJ/PROGNOSTIC REASONING FOR TROPICAL CYCLONE 25S (TWENTYFIVE)
- WARNING NR 003//
- RMKS/
- 1. FOR METEOROLOGISTS.
- 2. 6 HOUR SUMMARY AND ANALYSIS.
- SUMMARY:
- INITIAL POSITION: 11.0S 111.4E
- INITIAL INTENSITY: 35 KTS
- GEOGRAPHIC REFERENCE: 695 NM NORTH-NORTHWEST OF LEARMONTH,
- AUSTRALIA
- MOVEMENT PAST 6 HOURS: EAST-NORTHEASTWARD AT 12 KTS
- SIGNIFICANT WAVE HEIGHT: 15 FEET
- SATELLITE ANALYSIS, INITIAL POSITION AND INTENSITY DISCUSSION:
- TROPICAL CYCLONE (TC) 25S CONTINUES TO TRACK QUICKLY EAST-
- NORTHEASTWARD UNDER THE INFLUENCE OF THE NEAR-EQUATORIAL RIDGE TO
- THE NORTH, WITH FLARES OF CONVECTION BECOMING HEAVILY SHEARED
- WESTWARD AS DEPICTED BY ANIMATED ENHANCED INFRARED (EIR) SATELLITE
- IMAGERY. THE ENVIRONMENT HAS BECOME MARGINALLY UNFAVORABLE WITH
- HIGH VERTICAL WIND SHEAR (30+ KTS), SEA SURFACE TEMPERATURES
- BETWEEN 29 C TO 30 C, AND MODERATE WESTWARD OUTFLOW ALOFT. THE
- INITIAL POSITION IS PLACED WITH HIGH CONFIDENCE BASED ON AN EARLIER
- 041439Z METOP-C SCATTEROMETER PASS AND ANIMATED EIR. THE INITIAL
- INTENSITY OF 35 KTS IS ASSESSED WITH HIGH CONFIDENCE BASED ON THE
- PREVIOUSLY MENTIONED 041439Z SCATTEROMETER DATA.
- INITIAL WIND RADII BASIS: 041439Z SCATTEROMETER DATA
- CURRENT STEERING MECHANISM: NEAR-EQUATORIAL RIDGE (NER) POSITIONED
- TO THE NORTH
- AGENCY DVORAK AND AUTOMATED FIXES:
- PGTW: T3.0 - 45 KTS
- CIMSS SATCON: 42 KTS AT 041807Z
- CIMSS ADT: 33 KTS AT 041730Z
- CIMSS AIDT: 33 KTS AT 041730Z
- CIMSS D-MINT: 31 KTS AT 041807Z
- CIMSS D-PRINT: 29 KTS AT 041830Z
- FORECASTER ASSESSMENT OF CURRENT ENVIRONMENT: MARGINALLY
- UNFAVORABLE
- VWS: 30+ KTS
- SST: 29-30 CELSIUS
- OUTFLOW: MODERATE WESTWARD
- ANALYSIS CONFIDENCE:
- INITIAL POSITION: HIGH
- INITIAL INTENSITY: HIGH
- INITIAL WIND RADII: HIGH
- 3. FORECAST REASONING.
- SIGNIFICANT FORECAST CHANGES: THERE ARE NO SIGNIFICANT CHANGES TO
- THE FORECAST FROM THE PREVIOUS WARNING.
- FORECAST DISCUSSION: TROPICAL CYCLONE (TC) 25S WILL CONTINUE
- GENERALLY EASTWARD UNTIL TAU 12. AFTERWARDS, TC 25S WILL MAKE A
- GRADUAL PUSH SOUTHEASTWARD AS THE CIRCULATION TRACKS ALONG THE
- SOUTHERN PERIPHERY OF THE NER TO THE NORTH. INTERACTION WITH THE
- WIND FIELD OF A SEPARATE DEVELOPING TROPICAL DEPRESSION (93S) IS
- STILL EXPECTED, CAUSING A SHARPER SOUTHEASTWARD TURN AND EVENTUALLY
- STALLING WEST OF BROWSE ISLAND. TC 25S IS FORECASTED TO MARGINALLY
- INTENSIFY OVER THE NEXT 12 HOURS. HOWEVER, TC 25S WILL CONTINUE TO BE
- INHIBITED BY A STRONG EASTERLY SHEAR IMPACTING THE VORTEX. DRY-AIR
- ENTRAINMENT FROM THE SOUTH AND WEST WILL SHALLOW OUT THE SYSTEM
- FOLLOWING TAU 12 AND INITIATE A TERMINAL WEAKENING PHASE THEREAFTER.
- 25S IS EXPECTED TO DISSIPATE NEAR TAU 48, NORTHWEST OF BROOME.
- MODEL DISCUSSION: CROSS-TRACK SPREAD AMONGST NUMERICAL MODEL TRACK
- GUIDANCE INCREASES TO 80 NM AT TAU 24 AND 180 NM AT TAU 48,
- SHOWING A GOOD CONSENSUS ON THE FORECASTED SOUTHEASTWARD TRACK.
- MODERATE UNCERTAINTY NEAR THE LATER PORTION OF THE FORECAST TRACK IS
- EXPECTED THROUGH THE TERMINAL WEAKENING PHASE. THE JTWC TRACK
- FORECAST IS PLACED CLOSE TO THE MULTI-MODEL CONSENSUS THROUGHOUT THE
- FORECAST PERIOD WITH MEDIUM CONFIDENCE. INTENSITY GUIDANCE GENERALLY
- AGREES ON MARGINAL INTENSIFICATION THROUGH TAU 12, FOLLOWED BY A
- WEAKENING TREND UNTIL THE END OF THE FORECAST PERIOD. THE JTWC
- INTENSITY FORECAST IS PLACED NEAR THE CONSENSUS WITH HIGH CONFIDENCE.
- FORECAST CONFIDENCE:
- TRACK 00-72 HR: MEDIUM
- INTENSITY 00-72 HR: HIGH//
- NNNN
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