#107 Postby HURAKAN » Fri Oct 19, 2007 12:17 pm
000
WTPZ45 KNHC 191437
TCDEP5
TROPICAL STORM KIKO DISCUSSION NUMBER 19
NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL EP152007
800 AM PDT FRI OCT 19 2007
SATELLITE IMAGERY THIS MORNING SHOWS THAT KIKO IS SLOWLY BECOMING
BETTER ORGANIZED...WITH A CENTRAL CONVECTIVE FEATURE THAT MAY BE THE
BEGINNING OF A CENTRAL DENSE OVERCAST ACCOMPANIED BY A BAND IN THE
WESTERN SEMICIRCLE. SATELLITE INTENSITY ESTIMATES FROM TAFB AND
SAB HAVE INCREASED TO 45 KT...AND RECENT AMSU INTENSITY ESTIMATES
ARE 52 AND 45 KT. THE INITIAL INTENSITY IS INCREASED TO 40 KT...
AND THIS COULD BE CONSERVATIVE. ANALYSES FROM CIMSS AT THE
UNIVERSITY OF WISCONSIN NOW SHOW 10 KT OF EASTERLY VERTICAL SHEAR
OVER KIKO.
THE INITIAL MOTION IS 310/3. HIGH PRESSURE BUILDING OVER NORTHERN
MEXICO DURING THE NEXT 24-48 HR SHOULD STEER KIKO SLOWLY
NORTHWESTWARD. BEYOND THAT TIME...CONSIDERABLE UNCERTAINTY REMAINS
OVER THE DEVELOPMENT OF A TROUGH OVER THE WESTERN UNITED STATES AND
ITS EFFECTS ON KIKO. THE GFS...GFS ENSEMBLE MEAN...AND ECMWF ALL
FORECAST THE TROUGH TO DEVELOP FAR ENOUGH TO THE EAST TO ALLOW KIKO
TO TURN WESTWARD BY 72-96 HR...WITH THE GFS SHOWING THE TURN
EARLIER AND FARTHER SOUTH THAN THE ECMWF. THE UKMET...NOGAPS...AND
CANADIAN MODELS ALL SHOW THE TROUGH CUTTING OFF AND MOVING FAR
ENOUGH TO THE WEST TO TURN KIKO NORTHWARD. THE GFDL AND HWRF ARE
BETWEEN THESE EXTREMES...BUT APPEAR TO BE TOO FAST WITH THE FORWARD
MOTION. EVEN NOW...IT IS DIFFICULT TO TELL WHICH OF THESE
SCENARIOS WILL VERIFY. THEREFORE...THE NEW TRACK FORECAST CALLS
FOR A SLOW NORTHWESTWARD MOTION THROUGH 96 HR...FOLLOWED BY A
WEST-NORTHWESTWARD TURN AT A SLOWER FORWARD SPEED THAN FORECAST IN
THE PREVIOUS ADVISORY. OVERALL...THE TRACK IS A LITTLE TO THE
NORTH OF THE PREVIOUS TRACK AND A LITTLE TO THE RIGHT OF THE MODEL
CONSENSUS.
KIKO SHOULD REMAIN IN AN AREA OF LIGHT SHEAR FOR THE NEXT 48-72
HR...WHICH SHOULD ALLOW CONTINUED STRENGTHENING. THE SHIPS MODEL
CALLS FOR A PEAK INTENSITY OF 68 KT...THE GFDL 88 KT...AND THE HWRF
90 KT. THE INTENSITY FORECAST WILL COMPROMISE BETWEEN THESE WITH A
FORECAST PEAK INTENSITY OF 75 KT. AFTER 72 HR...THE LARGE-SCALE
MODELS FORECAST INCREASING SHEAR AS KIKO REACHES COOLER SEA SURFACE
TEMPERATURES. THIS COMBINATION SHOULD CAUSE A WEAKENING TREND.
FORECAST POSITIONS AND MAX WINDS
INITIAL 19/1500Z 17.1N 105.1W 40 KT
12HR VT 20/0000Z 17.5N 105.6W 45 KT
24HR VT 20/1200Z 17.9N 106.3W 55 KT
36HR VT 21/0000Z 18.5N 107.0W 60 KT
48HR VT 21/1200Z 19.2N 107.5W 70 KT
72HR VT 22/1200Z 20.5N 108.5W 75 KT
96HR VT 23/1200Z 21.5N 109.5W 70 KT
120HR VT 24/1200Z 22.0N 112.0W 60 KT
$$
FORECASTER BEVEN
000
WTPZ35 KNHC 191432
TCPEP5
BULLETIN
TROPICAL STORM KIKO ADVISORY NUMBER 19
NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL EP152007
800 AM PDT FRI OCT 19 2007
...KIKO A LITTLE STRONGER AS IT MOVES SLOWLY NORTHWESTWARD...
A TROPICAL STORM WATCH REMAINS IN EFFECT FOR PORTIONS OF THE PACIFIC
COAST OF MEXICO FROM PUNTA SAN TELMO NORTHWESTWARD TO CABO
CORRIENTES.
INTERESTS ELSEWHERE ALONG THE PACIFIC COAST OF MEXICO SHOULD
MONITOR THE PROGRESS OF KIKO.
FOR STORM INFORMATION SPECIFIC TO YOUR AREA...INCLUDING POSSIBLE
INLAND WATCHES AND WARNINGS...PLEASE MONITOR PRODUCTS ISSUED
BY YOUR LOCAL WEATHER OFFICE.
AT 800 AM PDT...1500Z...THE CENTER OF TROPICAL STORM KIKO WAS
LOCATED NEAR LATITUDE 17.1 NORTH...LONGITUDE 105.1 WEST OR ABOUT 140
MILES...230 KM...SOUTH-SOUTHWEST OF MANZANILLO MEXICO AND ABOUT 510
MILES...815 KM...SOUTHEAST OF CABO SAN LUCAS MEXICO.
KIKO IS MOVING TOWARD THE NORTHWEST NEAR 3 MPH...6 KM/HR...AND THIS
GENERAL MOTION IS EXPECTED TO CONTINUE FOR THE NEXT 24 HOURS. THIS
MOTION SHOULD KEEP THE CENTER JUST OFFSHORE AND MOVING ROUGHLY
PARALLEL TO THE PACIFIC COAST OF MEXICO.
MAXIMUM SUSTAINED WINDS ARE NEAR 45 MPH...75 KM/HR...WITH HIGHER
GUSTS. SOME STRENGTHENING IS FORECAST DURING THE NEXT 24 HOURS.
TROPICAL STORM FORCE WINDS EXTEND OUTWARD UP TO 70 MILES...110 KM
FROM THE CENTER.
ESTIMATED MINIMUM CENTRAL PRESSURE IS 999 MB...29.50 INCHES.
ABOVE NORMAL TIDES...ACCOMPANIED BY LARGE AND DANGEROUS BATTERING
WAVES...ARE POSSIBLE ALONG PORTIONS OF THE PACIFIC COAST OF MEXICO
IN REGIONS OF ONSHORE FLOW.
KIKO IS EXPECTED TO PRODUCE TOTAL RAINFALL ACCUMULATIONS OF 4 TO 7
INCHES OVER SOUTHWESTERN MEXICO WITH POSSIBLE ISOLATED MAXIMUM
AMOUNTS OF 10 INCHES. LIFE-THREATENING FLASH FLOODS AND MUD SLIDES
ARE POSSIBLE OVER MOUNTAINOUS TERRAIN.
REPEATING THE 800 AM PDT POSITION...17.1 N...105.1 W. MOVEMENT
TOWARD...NORTHWEST NEAR 3 MPH. MAXIMUM SUSTAINED WINDS...45 MPH.
MINIMUM CENTRAL PRESSURE...999 MB.
AN INTERMEDIATE ADVISORY WILL BE ISSUED BY THE NATIONAL HURRICANE
CENTER AT 1100 AM PDT FOLLOWED BY THE NEXT COMPLETE ADVISORY AT 200
PM PDT.
$$
FORECASTER BEVEN
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