644
WTPA41 PHFO 102037
TCDCP1
TROPICAL STORM KIKA DISCUSSION NUMBER 16
NWS CENTRAL PACIFIC HURRICANE CENTER HONOLULU HI CP012008
1100 AM HST SUN AUG 10 2008
CYCLING DEEP CONVECTION CONTINUES TO OCCUR NEAR THE CENTER OF
KIKA...BUT OVERALL ORGANIZATION REMAINS RATHER RAGGED. THE 1800 UTC
SATELLITE INTENSITY ESTIMATES RANGE FROM 1.5 TO 2.0. A RECENT
SCATTEROMETER PASS HAD SOME 40 TO 45 KT RAIN FLAGGED WIND BARBS IN
THE NORTH QUADRANT OF KIKA BUT WAS VOID OF ANY WEST WINDS IN THE
SOUTH QUADRANT. HOWEVER A RECENT WINDSAT PASS DID SHOW SOME WEST
WINDS IN THE SOUTH QUADRANT AND 35 KT WINDS IN THE NORTHERN
QUADRANT. HAVE KEPT INITIAL INTENSITY AT 35 KT FOR THIS PACKAGE BUT
THAT MAY BE A BIT GENEROUS.
AFTER A BIT OF A JOG TO THE SOUTH OVERNIGHT...THE PRESENT MOTION
APPEARS TO BE 280 DEGREES AT AROUND 14 KT. ALL OF THE CONSENSUS
MODELS ARE TIGHTLY CLUSTERED AND THE OFFICIAL FORECAST TRACK PRETTY
MUCH GOES DOWN THE MIDDLE OF THEM ALL. THIS IS DUE TO DEEP EASTERLY
FLOW SOUTH OF A DEEP LAYER ANTICYCLONE WHICH IS POSITIONED FAR TO
THE NORTH OF KIKA. THIS IS CONSISTENT WITH THE PREVIOUS FORECAST
PACKAGE.
ACCORDING TO UW/CIMSS ANALYSES...THE SHEAR IN THE VICINITY OF KIKA
HAS INCREASED OVER THE PAST SIX HOURS TO BETWEEN 6 AND 7 KNOTS FROM
THE WEST NORTHWEST. OVER THE NEXT 24 HOURS THE SYSTEM WILL BE MOVING
OVER THE SAME OR SLIGHTLY COOLER WATERS BEFORE ENTERING AN AREA OF
WARMER WATER AND HIGHER OCEANIC HEAT CONTENT. DUE TO THE SLIGHT
INCREASE IN SHEAR AND SLIGHTLY COOLER WATERS...KIKA IS EXPECTED TO
REMAIN AT A MINIMAL TROPICAL STORM FOR THE NEXT 24 TO 48 HOURS. SOME
MINOR INTENSITY CHANGES MAY OCCUR BOTH UP AND DOWN DURING THIS
PERIOD. BEYOND 48 HOURS...THE SHEAR IS FORECAST TO INCREASE AROUND
KIKA RESULTING IN THE SYSTEM REMAINING AS IS OR WEAKENING SLIGHTLY.
THIS IS IN CONSENSUS OF MOST OF THE MODELS EXCEPT FOR THE SHIPS
MODEL WHICH CONTINUES TO SLOWLY INTENSIFY KIKA TO 50 KNOTS IN 72
HOURS AND UP TO 60 KNOTS BY 120 HOURS.
FORECAST POSITIONS AND MAX WINDS
INITIAL 10/2100Z 9.8N 163.0W 35 KT
12HR VT 11/0600Z 10.1N 165.1W 35 KT
24HR VT 11/1800Z 10.5N 167.9W 35 KT
36HR VT 12/0600Z 11.0N 170.7W 40 KT
48HR VT 12/1800Z 11.5N 173.5W 40 KT
72HR VT 13/1800Z 12.5N 179.0W 35 KT
96HR VT 14/1800Z 13.3N 175.7E 35 KT
120HR VT 15/1800Z 13.7N 171.3E 35 KT
$$
FORECASTER BURKE
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