( cyclocane is a CYCLOne and hurriCANE tracker by hayley )
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This is the final warning / advisory for this storm as it has weakened below warning levels and/or the storm system is no longer a tropical cyclone.
Current Wind Speed 50 knots / 58 MPH
Max Predicted Wind Speed 55 knots / 63 MPH at
Spaghetti models for TAM can be found here:
WTPS31 PGTW 151500
MSGID/GENADMIN/JOINT TYPHOON WRNCEN PEARL HARBOR HI//
SUBJ/TROPICAL CYCLONE 30P (TAM) WARNING NR 006//
RMKS/
1. TROPICAL CYCLONE 30P (TAM) WARNING NR 006
01 ACTIVE TROPICAL CYCLONE IN SOUTHPAC
MAX SUSTAINED WINDS BASED ON ONE-MINUTE AVERAGE
WIND RADII VALID OVER OPEN WATER ONLY
---
WARNING POSITION:
151200Z --- NEAR 23.1S 171.7E
MOVEMENT PAST SIX HOURS - 160 DEGREES AT 23 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
WIND RADII VALID OVER OPEN WATER ONLY
BECOMING SUBTROPICAL
RADIUS OF 050 KT WINDS - 100 NM NORTHEAST QUADRANT
075 NM SOUTHEAST QUADRANT
000 NM SOUTHWEST QUADRANT
000 NM NORTHWEST QUADRANT
RADIUS OF 034 KT WINDS - 215 NM NORTHEAST QUADRANT
180 NM SOUTHEAST QUADRANT
000 NM SOUTHWEST QUADRANT
000 NM NORTHWEST QUADRANT
REPEAT POSIT: 23.1S 171.7E
---
FORECASTS:
12 HRS, VALID AT:
160000Z --- 28.6S 171.9E
MAX SUSTAINED WINDS - 055 KT, GUSTS 070 KT
WIND RADII VALID OVER OPEN WATER ONLY
SUBTROPICAL
RADIUS OF 050 KT WINDS - 100 NM NORTHEAST QUADRANT
110 NM SOUTHEAST QUADRANT
060 NM SOUTHWEST QUADRANT
010 NM NORTHWEST QUADRANT
RADIUS OF 034 KT WINDS - 230 NM NORTHEAST QUADRANT
220 NM SOUTHEAST QUADRANT
300 NM SOUTHWEST QUADRANT
125 NM NORTHWEST QUADRANT
---
REMARKS:
151500Z POSITION NEAR 24.5S 171.7E.
15APR25. TROPICAL CYCLONE 30P (TAM), LOCATED APPROXIMATELY 316 NM
EAST-SOUTHEAST OF NOUMEA, NEW CALEDONIA, HAS TRACKED SOUTH-
SOUTHEASTWARD AT 23 KNOTS OVER THE PAST SIX HOURS. TROPICAL CYCLONE
(TC) 30S (TAM), WHILE STEADILY INCREASING IN INTENSITY, IS DOING SO
UNDER THE AUSPICES OF INCREASING BAROCLINIC FORCING AS IT RAPIDLY
UNDERGOES SUBTROPICAL TRANSITION (STT). THE SYSTEM IS TRACKING
SOUTHEASTWARD AT A VERY FAST 23 KNOTS, ALONG THE WESTERN SIDE OF A
DEEP-LAYER SUBTROPICAL TO THE EAST. OVER THE NEXT 12 TO 24 HOURS, TEH
SYSTEM WILL BEGIN TO TRACK MORE SOUTHWARD, EVENTUALLY TURNING
SOUTHWESTWARD AS IT UNDERGOES BINARY INTERACTION WITH A RAPIDLY
DEVELOPING LOW PRESSURE AREA CURRENTLY JUST SOUTHWEST OF NEW
CALEDONIA. TC 30S PRESENTS AN IMPRESSIVE SIGNATURE IN THE ENHANCED
INFRARED (EIR) IMAGERY, WITH EXTREMELY COLD OVERSHOOTING TOPS
APPORACHING -90C. HOWEVER, THE VORTEX IS DECOUPLED AND THE LOW-LEVEL
CIRCULATION CENTER (LLCC) IS DISPLACED OVER 60NM TO THE NORTHWEST FROM
THE COLDEST CLOUD TOPS. A LACK OF RECENT MICROWAVE IMAGERY PRECLUDES A
HIGH CONFIDENCE ASSESSMENT, THOUGH A 151004Z AMSU-B 89GHZ IMAGE
PROVIDED ENOUGH EVIDENCE OF THE VORTEX DECOUPLING TO LEND HIGH MEDIUM
CONFIDENCE TO THE INITIAL POSITION. THE INITIAL INTENSITY IS BASED ON
THE T3.5 FIXES FROM BOTH PGTW AND KNES, WITH MEDIUM CONFIDENCE. THE
SYSTEM IS FORECAST TO CONTINUE TO INTENSIFY OVER THE NEXT 12 HOURS
WHILE UNDERGOING STT. TC 30S WILL PASS SOUTH OF THE 26C ISOTHERM
WITHIN THE NEXT SIX HOURS OR SO, AND MOVE UNDER THE NOSE OF A 100 KNOT
SUBTROPICAL JET MAX WHILE DEVELOPING INCREASING BAROCLINICTY. THE
SYSTEM IS EXPECTED TO COMPLETE THE STT PROCESS BY TAU 12, CONVERTING
TO A STORM-FORCE LOW PRESSURE SYSTEM NORTHWEST OF NEW ZEALAND. 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. MINIMUM CENTRAL PRESSURE AT 151200Z IS 986
MB. MAXIMUM SIGNIFICANT WAVE HEIGHT AT 151200Z IS 31 FEET.//
NNNN Public Advisory not available for this storm.
Forecast Discussion not available for this storm.
| Time | Speed | Location | Status |
|---|---|---|---|
| 50 knots | -23.1, 171.7 | ||
| 55 knots | -28.6, 171.9 |
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