1. TROPICAL CYCLONE 19P (KENI) WARNING NR 008
01 ACTIVE TROPICAL CYCLONE IN SOUTHPAC
MAX SUSTAINED WINDS BASED ON ONE-MINUTE AVERAGE
WIND RADII VALID OVER OPEN WATER ONLY
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WARNING POSITION:
101200Z --- NEAR 21.1S 178.7W
MOVEMENT PAST SIX HOURS - 130 DEGREES AT 25 KTS
POSITION ACCURATE TO WITHIN 045 NM
POSITION BASED ON CENTER LOCATED BY SATELLITE
PRESENT WIND DISTRIBUTION:
MAX SUSTAINED WINDS - 085 KT, GUSTS 105 KT
WIND RADII VALID OVER OPEN WATER ONLY
RADIUS OF 064 KT WINDS - 035 NM NORTHEAST QUADRANT
035 NM SOUTHEAST QUADRANT
025 NM SOUTHWEST QUADRANT
035 NM NORTHWEST QUADRANT
RADIUS OF 050 KT WINDS - 095 NM NORTHEAST QUADRANT
090 NM SOUTHEAST QUADRANT
070 NM SOUTHWEST QUADRANT
095 NM NORTHWEST QUADRANT
RADIUS OF 034 KT WINDS - 175 NM NORTHEAST QUADRANT
165 NM SOUTHEAST QUADRANT
140 NM SOUTHWEST QUADRANT
170 NM NORTHWEST QUADRANT
REPEAT POSIT: 21.1S 178.7W
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FORECASTS:
12 HRS, VALID AT:
110000Z --- 25.2S 174.3W
MAX SUSTAINED WINDS - 080 KT, GUSTS 100 KT
WIND RADII VALID OVER OPEN WATER ONLY
RADIUS OF 064 KT WINDS - 035 NM NORTHEAST QUADRANT
030 NM SOUTHEAST QUADRANT
025 NM SOUTHWEST QUADRANT
020 NM NORTHWEST QUADRANT
RADIUS OF 050 KT WINDS - 130 NM NORTHEAST QUADRANT
095 NM SOUTHEAST QUADRANT
040 NM SOUTHWEST QUADRANT
060 NM NORTHWEST QUADRANT
RADIUS OF 034 KT WINDS - 220 NM NORTHEAST QUADRANT
210 NM SOUTHEAST QUADRANT
150 NM SOUTHWEST QUADRANT
170 NM NORTHWEST QUADRANT
VECTOR TO 24 HR POSIT: 150 DEG/ 34 KTS
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24 HRS, VALID AT:
111200Z --- 31.1S 170.3W
MAX SUSTAINED WINDS - 070 KT, GUSTS 085 KT
WIND RADII VALID OVER OPEN WATER ONLY
BECOMING EXTRATROPICAL
RADIUS OF 064 KT WINDS - 035 NM NORTHEAST QUADRANT
030 NM SOUTHEAST QUADRANT
005 NM SOUTHWEST QUADRANT
015 NM NORTHWEST QUADRANT
RADIUS OF 050 KT WINDS - 120 NM NORTHEAST QUADRANT
100 NM SOUTHEAST QUADRANT
035 NM SOUTHWEST QUADRANT
050 NM NORTHWEST QUADRANT
RADIUS OF 034 KT WINDS - 295 NM NORTHEAST QUADRANT
290 NM SOUTHEAST QUADRANT
185 NM SOUTHWEST QUADRANT
165 NM NORTHWEST QUADRANT
VECTOR TO 36 HR POSIT: 165 DEG/ 37 KTS
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36 HRS, VALID AT:
120000Z --- 38.2S 167.6W
MAX SUSTAINED WINDS - 055 KT, GUSTS 070 KT
WIND RADII VALID OVER OPEN WATER ONLY
EXTRATROPICAL
RADIUS OF 050 KT WINDS - 165 NM NORTHEAST QUADRANT
180 NM SOUTHEAST QUADRANT
000 NM SOUTHWEST QUADRANT
020 NM NORTHWEST QUADRANT
RADIUS OF 034 KT WINDS - 375 NM NORTHEAST QUADRANT
360 NM SOUTHEAST QUADRANT
240 NM SOUTHWEST QUADRANT
175 NM NORTHWEST QUADRANT
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REMARKS:
101500Z POSITION NEAR 22.1S 177.6W.
TROPICAL CYCLONE (TC) 19P (KENI), LOCATED APPROXIMATELY 243 NM
SOUTHEAST OF SUVA, FIJI, HAS TRACKED SOUTHEASTWARD AT 25 KNOTS
OVER THE PAST SIX HOURS. ANIMATED ENHANCED INFRARED SATELLITE IMAGERY
SHOWS THAT TC 19P NO LONGER HAS AN EYE FEATURE AND THAT THE DEEP
CONVECTION IS BEGINNING TO WEAKEN. THE INITIAL POSITION IS BASED ON A
101011Z METOP-B ASCAT IMAGE WHICH CLEARLY SHOWS THE LOCATION OF THE
LOW LEVEL CIRCULATION CENTER (LLCC). THE INITIAL INTENSITY OF 85
KNOTS IS HEDGED SLIGHTLY BELOW DVORAK CURRENT INTENSITY (CI)
ESTIMATES OF T5.0 (90 KNOTS) FROM PGTW AND KNES BASED ON A WEAKENING
CONVECTIVE STRUCTURE. ENVIRONMENTAL ANALYSIS SHOWS FAVORABLE VERTICAL
WIND SHEAR (5 TO 15 KNOTS) AND EXCELLENT POLEWARD OUTFLOW. SEA
SURFACE TEMPERATURES REMAIN FAVORABLE BETWEEN 27 AND 28 DEGREES
CELSIUS. THESE FAVORABLE CONDITIONS WILL QUICKLY DIMINISH AS TC 19P
RAPIDLY TRACKS SOUTHEASTWARD. TC 19P WILL CONTINUE TO WEAKEN AND
CONTINUE TO ACCELERATE AS IT ENCOUNTERS INCREASED VERTICAL WIND SHEAR
AND COOLER SEA SURFACE TEMPERATURES. TC 19P WILL BEGIN EXTRATROPICAL
TRANSITION BY TAU 24. BY TAU 36, TC 19P WILL COMPLETE EXTRATROPICAL
TRANSITION AND REMAIN A STRONG SYSTEM AS IT QUICKLY TRACKS
SOUTHEASTWARD. DYNAMIC MODEL GUIDANCE IS IN GOOD AGREEMENT,
THEREFORE, THERE IS HIGH CONFIDENCE IN THE JTWC FORECAST TRACK.
MAXIMUM SIGNIFICANT WAVE HEIGHT AT 101200Z IS 30 FEET. NEXT
WARNINGS AT 102100Z, 110300Z, 110900Z AND 111500Z.
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