
WTIO31 PGTW 111500
MSGID/GENADMIN/NAVMARFCSTCEN PEARL HARBOR HI/JTWC//
SUBJ/TROPICAL CYCLONE 01A (ONE) WARNING NR 001//
RMKS/
1. TROPICAL CYCLONE 01A (ONE) WARNING NR 001
01 ACTIVE TROPICAL CYCLONE IN NORTHIO
MAX SUSTAINED WINDS BASED ON ONE-MINUTE AVERAGE
WIND RADII VALID OVER OPEN WATER ONLY
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WARNING POSITION:
111200Z --- NEAR 19.9N 71.7E
MOVEMENT PAST SIX HOURS - 320 DEGREES AT 05 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
REPEAT POSIT: 19.9N 71.7E
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FORECASTS:
12 HRS, VALID AT:
120000Z --- 20.2N 71.5E
MAX SUSTAINED WINDS - 035 KT, GUSTS 045 KT
WIND RADII VALID OVER OPEN WATER ONLY
VECTOR TO 24 HR POSIT: 325 DEG/ 02 KTS
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24 HRS, VALID AT:
121200Z --- 20.6N 71.2E
MAX SUSTAINED WINDS - 035 KT, GUSTS 045 KT
WIND RADII VALID OVER OPEN WATER ONLY
DISSIPATING AS A SIGNIFICANT TROPICAL CYCLONE OVER WATER
VECTOR TO 36 HR POSIT: 335 DEG/ 03 KTS
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36 HRS, VALID AT:
130000Z --- 21.2N 70.9E
MAX SUSTAINED WINDS - 025 KT, GUSTS 035 KT
WIND RADII VALID OVER OPEN WATER ONLY
DISSIPATED AS A SIGNIFICANT TROPICAL CYCLONE OVER LAND
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REMARKS:
111500Z POSITION NEAR 20.0N 71.7E.
TROPICAL CYCLONE (TC) 01A (ONE), LOCATED APPROXIMATELY, 390 NM
SOUTHEAST OF KARACHI, PAKISTAN, HAS TRACKED NORTHWESTWARD AT 05 KTS
OVER THE PAST SIX HOURS. ANIMATED MULTISPECTRAL SATELLITE IMAGERY
SHOWS A FULLY EXPOSED EYE FEATURE WITH GROWING CONVECTION ALONG THE
SOUTHEASTERN FEEDER BAND. HOWEVER, THE MAJORITY OF THE CONVECTION
REMAINS DETACHED TO THE WEST OF THE CENTER. THE CURRENT INTENSITY
IS SUPPORTED BY DVORAK ESTIMATES FROM PGTW AND KNES AND EXTRAPOLATED
FROM NEARBY SHIP OBSERVATIONS. UPPER LEVEL ANALYSIS INDICATES THE
SYSTEM IS JUST TO THE SOUTH OF A RIDGE AXIS IN AN AREA OF LOW TO
MODERATE (05-10 KT) VERTICAL WIND SHEAR. THE SYSTEM IS TRACKING
ALONG THE WESTERN PERIPHERY OF A WEAK LOW- TO MID-LEVEL SUBTROPICAL
RIDGE OVER NORTHERN INDIA. IT IS EXPECTED TO CONTINUE TRACKING
NORTHWESTWARD AND MAKE LANDFALL IN THE GUJARAT PENINSULA AND
DISSIPATE AS A SIGNIFICANT TROPICAL CYCLONE OVER LAND BY TAU 36.
THE LIMITED NUMERICAL GUIDANCE ARE IN POOR AGREEMENT WITH WBAR ON
THE EXTREME LEFT OF THE ENVELOPE AND NOGAPS TO THE RIGHT. THIS TRACK
FORECAST IS JUST TO THE RIGHT OF CONSENSUS AND RELIES HEAVILY ON
PERSISTENCE AND SYNOPTIC PATTERN. THIS WARNING SUPERSEDES AND
CANCELS REF A, NAVMARFCSTCEN 102221Z JUN 11 TROPICAL CYCLONE
FORMATION ALERT (WTIO21 PGTW 062230). MAXIMUM SIGNIFICANT WAVE
HEIGHT AT 111200Z IS 8 FEET. NEXT WARNINGS AT 112100Z, 120300Z,
120900Z AND 121500Z.//
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