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Tropical Storm KIKO


ZCZC MIATCDEP5 ALL
TTAA00 KNHC DDHHMM
TROPICAL STORM KIKO DISCUSSION NUMBER  29
NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL   EP152007
800 PM PDT SUN OCT 21 2007
 
KIKO CONTINUES TO WEAKEN.  A SMALL AREA OF DEEP CONVECTION 
LOCATED NORTH OF THE CENTER HAS BEEN WEAKENING DURING THE PAST
COUPLE OF HOURS.  DVORAK INTENSITY ESTIMATES ARE SLOWLY DECREASING
AND THE INITIAL INTENSITY IS SET A LITTLE BELOW THE CONSENSUS OF
THE DATA T-NUMBERS. QUIKSCAT WAS SCHEDULED TO PASS OVER THE CYCLONE
A SHORT TIME AGO...AND DATA FROM THIS PASS SHOULD SOON PROVIDE A
BETTER ASSESSMENT OF THE INTENSITY.  

EVEN THOUGH KIKO IS FORECAST TO REMAIN OVER WARM SSTS...SOUTHERLY
SHEAR AND A DRY AND STABLE ENVIRONMENT ARE EXPECTED TO CONTINUE THE
WEAKENING PROCESS.  DESPITE THE SEEMINGLY HOSTILE ENVIRONMENT...THE
GFDL MAINTAINS KIKO AS A MODERATE TROPICAL STORM FOR A COUPLE MORE
DAYS.  THE SHIPS AND HWRF GUIDANCE PREDICT A FASTER RATE OF
WEAKENING AND THE NEW INTENSITY FORECAST IS BETWEEN THESE MODELS. 
THE OFFICIAL FORECAST INDICATES THAT KIKO WILL BECOME A REMNANT LOW
IN ABOUT 48 HOURS...IF NOT SOONER.

A TIMELY 2356 UTC SSMI MICROWAVE OVERPASS WAS VERY HELPFUL IN
LOCATING THE CENTER OF KIKO THIS EVENING.  THIS IMAGERY ALONG WITH
EARLIER CONVENTIONAL SATELLITE FIXES...SUGGEST THAT THE MUCH
ANTICIPATED WESTWARD TURN HAS COMMENCED...AND THE INITIAL MOTION
ESTIMATE IS 300/3.  KIKO IS FORECAST TO MOVE WESTWARD SOUTH OF A
DEEP-LAYER RIDGE THAT IS BUILDING OVER THE WESTERN UNITED STATES. 
THE DYNAMICAL MODELS ARE IN FAIRLY GOOD AGREEMENT ON THIS SCENARIO
AND THEY ALL PREDICT THAT KIKO WILL PASS WELL SOUTH OF THE BAJA
PENINSULA.  THE GFDL REMAINS ALONG THE NORTHERN SIDE OF THE MODEL
ENVELOPE...WHILE THE GFS AND UKMET ARE ON THE SOUTHERN EDGE AND
INDICATE A SOUTHWESTWARD MOTION DURING THE NEXT DAY OR SO.  THE NEW
NHC FORECAST IS ADJUSTED A LITTLE SOUTH OF THE PREVIOUS TRACK...BUT
IS SLIGHTLY NORTH OF THE MODEL CONSENSUS.  
 
FORECAST POSITIONS AND MAX WINDS
 
INITIAL      22/0300Z 19.6N 108.0W    40 KT
 12HR VT     22/1200Z 19.7N 108.6W    35 KT
 24HR VT     23/0000Z 19.9N 110.0W    30 KT
 36HR VT     23/1200Z 20.0N 111.8W    25 KT
 48HR VT     24/0000Z 20.2N 114.0W    25 KT...REMNANT LOW
 72HR VT     25/0000Z 21.5N 118.0W    20 KT...REMNANT LOW
 96HR VT     26/0000Z 23.0N 121.5W    20 KT...REMNANT LOW
120HR VT     27/0000Z...DISSIPATED
 
$$
FORECASTER BROWN
 
NNNN


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Page last modified: Friday, 02-Nov-2007 21:21:06 UTC