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Old 29th January 2018, 13:47
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1. TROPICAL CYCLONE 07S (CEBILE) WARNING NR 011
01 ACTIVE TROPICAL CYCLONE IN SOUTHIO
MAX SUSTAINED WINDS BASED ON ONE-MINUTE AVERAGE
WIND RADII VALID OVER OPEN WATER ONLY
---
WARNING POSITION:
291200Z --- NEAR 15.7S 81.2E
MOVEMENT PAST SIX HOURS - 230 DEGREES AT 06 KTS
POSITION ACCURATE TO WITHIN 010 NM
POSITION BASED ON EYE FIXED BY SATELLITE
PRESENT WIND DISTRIBUTION:
MAX SUSTAINED WINDS - 110 KT, GUSTS 135 KT
WIND RADII VALID OVER OPEN WATER ONLY
RADIUS OF 064 KT WINDS - 030 NM NORTHEAST QUADRANT
035 NM SOUTHEAST QUADRANT
035 NM SOUTHWEST QUADRANT
025 NM NORTHWEST QUADRANT
RADIUS OF 050 KT WINDS - 055 NM NORTHEAST QUADRANT
070 NM SOUTHEAST QUADRANT
065 NM SOUTHWEST QUADRANT
050 NM NORTHWEST QUADRANT
RADIUS OF 034 KT WINDS - 110 NM NORTHEAST QUADRANT
130 NM SOUTHEAST QUADRANT
120 NM SOUTHWEST QUADRANT
095 NM NORTHWEST QUADRANT
REPEAT POSIT: 15.7S 81.2E
---
FORECASTS:
12 HRS, VALID AT:
300000Z --- 16.2S 80.3E
MAX SUSTAINED WINDS - 110 KT, GUSTS 135 KT
WIND RADII VALID OVER OPEN WATER ONLY
RADIUS OF 064 KT WINDS - 045 NM NORTHEAST QUADRANT
050 NM SOUTHEAST QUADRANT
045 NM SOUTHWEST QUADRANT
040 NM NORTHWEST QUADRANT
RADIUS OF 050 KT WINDS - 070 NM NORTHEAST QUADRANT
080 NM SOUTHEAST QUADRANT
075 NM SOUTHWEST QUADRANT
060 NM NORTHWEST QUADRANT
RADIUS OF 034 KT WINDS - 125 NM NORTHEAST QUADRANT
155 NM SOUTHEAST QUADRANT
140 NM SOUTHWEST QUADRANT
110 NM NORTHWEST QUADRANT
VECTOR TO 24 HR POSIT: 255 DEG/ 04 KTS
---
24 HRS, VALID AT:
301200Z --- 16.4S 79.4E
MAX SUSTAINED WINDS - 110 KT, GUSTS 135 KT
WIND RADII VALID OVER OPEN WATER ONLY
RADIUS OF 064 KT WINDS - 040 NM NORTHEAST QUADRANT
045 NM SOUTHEAST QUADRANT
045 NM SOUTHWEST QUADRANT
040 NM NORTHWEST QUADRANT
RADIUS OF 050 KT WINDS - 065 NM NORTHEAST QUADRANT
070 NM SOUTHEAST QUADRANT
070 NM SOUTHWEST QUADRANT
065 NM NORTHWEST QUADRANT
RADIUS OF 034 KT WINDS - 120 NM NORTHEAST QUADRANT
155 NM SOUTHEAST QUADRANT
150 NM SOUTHWEST QUADRANT
115 NM NORTHWEST QUADRANT
VECTOR TO 36 HR POSIT: 270 DEG/ 04 KTS
---
36 HRS, VALID AT:
310000Z --- 16.4S 78.6E
MAX SUSTAINED WINDS - 110 KT, GUSTS 135 KT
WIND RADII VALID OVER OPEN WATER ONLY
RADIUS OF 064 KT WINDS - 040 NM NORTHEAST QUADRANT
045 NM SOUTHEAST QUADRANT
045 NM SOUTHWEST QUADRANT
040 NM NORTHWEST QUADRANT
RADIUS OF 050 KT WINDS - 065 NM NORTHEAST QUADRANT
070 NM SOUTHEAST QUADRANT
070 NM SOUTHWEST QUADRANT
065 NM NORTHWEST QUADRANT
RADIUS OF 034 KT WINDS - 120 NM NORTHEAST QUADRANT
155 NM SOUTHEAST QUADRANT
150 NM SOUTHWEST QUADRANT
115 NM NORTHWEST QUADRANT
VECTOR TO 48 HR POSIT: 260 DEG/ 04 KTS
---
EXTENDED OUTLOOK:
48 HRS, VALID AT:
311200Z --- 16.5S 77.8E
MAX SUSTAINED WINDS - 105 KT, GUSTS 130 KT
WIND RADII VALID OVER OPEN WATER ONLY
RADIUS OF 064 KT WINDS - 035 NM NORTHEAST QUADRANT
045 NM SOUTHEAST QUADRANT
045 NM SOUTHWEST QUADRANT
035 NM NORTHWEST QUADRANT
RADIUS OF 050 KT WINDS - 060 NM NORTHEAST QUADRANT
070 NM SOUTHEAST QUADRANT
070 NM SOUTHWEST QUADRANT
060 NM NORTHWEST QUADRANT
RADIUS OF 034 KT WINDS - 120 NM NORTHEAST QUADRANT
165 NM SOUTHEAST QUADRANT
155 NM SOUTHWEST QUADRANT
120 NM NORTHWEST QUADRANT
VECTOR TO 72 HR POSIT: 245 DEG/ 03 KTS
---
72 HRS, VALID AT:
011200Z --- 17.0S 76.6E
MAX SUSTAINED WINDS - 100 KT, GUSTS 125 KT
WIND RADII VALID OVER OPEN WATER ONLY
RADIUS OF 064 KT WINDS - 040 NM NORTHEAST QUADRANT
045 NM SOUTHEAST QUADRANT
045 NM SOUTHWEST QUADRANT
040 NM NORTHWEST QUADRANT
RADIUS OF 050 KT WINDS - 060 NM NORTHEAST QUADRANT
075 NM SOUTHEAST QUADRANT
075 NM SOUTHWEST QUADRANT
060 NM NORTHWEST QUADRANT
RADIUS OF 034 KT WINDS - 140 NM NORTHEAST QUADRANT
180 NM SOUTHEAST QUADRANT
170 NM SOUTHWEST QUADRANT
125 NM NORTHWEST QUADRANT
VECTOR TO 96 HR POSIT: 205 DEG/ 02 KTS
---
LONG RANGE OUTLOOK:
---
96 HRS, VALID AT:
021200Z --- 17.9S 76.2E
MAX SUSTAINED WINDS - 090 KT, GUSTS 110 KT
WIND RADII VALID OVER OPEN WATER ONLY
RADIUS OF 064 KT WINDS - 045 NM NORTHEAST QUADRANT
050 NM SOUTHEAST QUADRANT
045 NM SOUTHWEST QUADRANT
045 NM NORTHWEST QUADRANT
RADIUS OF 050 KT WINDS - 070 NM NORTHEAST QUADRANT
100 NM SOUTHEAST QUADRANT
085 NM SOUTHWEST QUADRANT
070 NM NORTHWEST QUADRANT
RADIUS OF 034 KT WINDS - 145 NM NORTHEAST QUADRANT
180 NM SOUTHEAST QUADRANT
175 NM SOUTHWEST QUADRANT
125 NM NORTHWEST QUADRANT
VECTOR TO 120 HR POSIT: 135 DEG/ 04 KTS
---
120 HRS, VALID AT:
031200Z --- 19.2S 77.5E
MAX SUSTAINED WINDS - 080 KT, GUSTS 100 KT
WIND RADII VALID OVER OPEN WATER ONLY
RADIUS OF 064 KT WINDS - 040 NM NORTHEAST QUADRANT
050 NM SOUTHEAST QUADRANT
045 NM SOUTHWEST QUADRANT
040 NM NORTHWEST QUADRANT
RADIUS OF 050 KT WINDS - 090 NM NORTHEAST QUADRANT
100 NM SOUTHEAST QUADRANT
085 NM SOUTHWEST QUADRANT
065 NM NORTHWEST QUADRANT
RADIUS OF 034 KT WINDS - 160 NM NORTHEAST QUADRANT
170 NM SOUTHEAST QUADRANT
160 NM SOUTHWEST QUADRANT
120 NM NORTHWEST QUADRANT
---
REMARKS:
291500Z POSITION NEAR 15.8S 81.0E.
TROPICAL CYCLONE (TC) 07S (CEBILE), LOCATED APPROXIMATELY 726 NM
SOUTHEAST OF DIEGO GARCIA, HAS TRACKED SOUTHWESTWARD AT 06 KNOTS
OVER THE PAST SIX HOURS. ANIMATED MULTISPECTRAL SATELLITE IMAGERY
(MSI) SHOWS THE SYSTEM HAS MAINTAINED A 5-NM PINHOLE EYE AND A
COMPACT, ALBEIT, VERY DEEP CENTRAL CONVECTION. THE INITIAL POSITION
IS BASED ON A MICROWAVE EYE FEATURE IN THE 291048Z 91 GHZ SSMIS
MICROWAVE PASS WITH HIGH CONFIDENCE. THE INITIAL INTENSITY IS BASED
ON DVORAK CURRENT ESTIMATES FROM PGTW AND KNES OF T6.0 AND T5.5,
RESPECTIVELY, AND REFLECTS THE SUSTAINED CONVECTIVE STRUCTURE OF THE
SYSTEM. ENVIRONMENTAL ANALYSIS INDICATES THE SYSTEM IS IN MODERATE
(15-KNOT) VWS THAT IS OFFSET BY GOOD RADIAL OUTFLOW AND WARM (29C)
ALONG-TRACK SSTS. THIS DYNAMIC BALANCE IS EXPECTED TO PERSIST OVER
THE NEXT 36 HOURS, MAINTAINING THE PEAK INTENSITY OF 110 KNOTS.
AFTERWARD, A COMPETING STEERING STR TO THE SOUTHWEST WILL CAUSE THE
SYSTEM TO SLOW DOWN BEFORE THE NEAR EQUATORIAL RIDGE TO THE NORTH
BECOMES THE DOMINANT STEERING MECHANISM AND DRIVES TC 07S TO RECURVE
SOUTHEASTWARD. DURING THIS STAGE, VWS IS EXPECTED TO INCREASE
CAUSING GRADUAL WEAKENING. THE AVAILABLE NUMERIC GUIDANCE REMAINS
SPREAD OUT AT THE MID AND EXTENDED PORTION OF THE FORECAST WITH
VARYING SOLUTIONS ON THE RECURVATURE WITH JGSM AND AFUM GOING FOR AN
EARLY RECURVATURE. THE JTWC FORECAST TRACK IS LAID WITH GOOD
CONFIDENCE SLIGHTLY FASTER THAN CONSENSUS TO OFFSET THE JGSM AND
AFUM. MAXIMUM SIGNIFICANT WAVE HEIGHT AT 291200Z IS 30 FEET. NEXT
WARNINGS AT 292100Z, 300300Z, 300900Z AND 301500Z.








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