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Tropical Storm HECTOR


ZCZC MIATCDEP4 ALL
TTAA00 KNHC DDHHMM
TROPICAL STORM HECTOR DISCUSSION NUMBER   5
NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL   EP092006
200 PM PDT WED AUG 16 2006
 
VISIBLE IMAGERY DEPICTS THAT HECTOR HAS BECOME BETTER ORGANIZED THIS
AFTERNOON...WITH A BANDING EYE BEGINNING TO FORM.  DVORAK SATELLITE
INTENSITY ESTIMATES ARE 45 AND 55 KT FROM SAB AND TAFB
RESPECTIVELY.  THE INTENSITY REMAINS AT 55 KT...BUT HECTOR COULD
EASILY BECOME A HURRICANE WITHIN THE NEXT 6 HOURS.  THE INTENSITY
FORECAST IS SIMILAR TO THE PREVIOUS PACKAGE AND FOLLOWS A BLEND OF
THE SHIPS...GFDL...AND THE FSU SUPERENSEMBLE.

INITIAL MOTION IS ESTIMATED AT 285/9.  HECTOR IS MOVING
WEST-NORTHWESTWARD ALONG THE SOUTHWESTERN PERIPHERY OF THE
SUBTROPICAL RIDGE EXTENDING FROM TEXAS...CONTINUING ON WESTWARD
OVER THE EASTERN PACIFIC. LARGE-SCALE MODELS AND THE GFDL CONTINUE
TO SUGGEST THAT A WEAKNESS IN THE RIDGE WILL BECOME MORE PRONOUNCED
AFTER 72 HOURS...CAUSING HECTOR TO SLOW DOWN AND TURN MORE
NORTHWESTWARD THROUGH THE REMAINDER OF THE FORECAST PERIOD.  THE
UKMET AND THE NOGAPS REMAIN THE OUTLIERS...WITH THE UKMET
MAINTAINING A WESTWARD TRACK THROUGH DAY 5...AND NOGAPS INDICATING
A MORE NORTHWESTWARD MOTION...WELL TO THE RIGHT OF THE REMAINING
GUIDANCE.  THE OFFICIAL TRACK FORECAST IS JUST TO THE RIGHT OF THE
PREVIOUS FORECAST AND IS BASED PRIMARILY ON A CONSENSUS OF THE
GFS...GFDL...THE FSU SUPERENSEMBLE AND THE GFS ENSEMBLE.

WIND RADII ARE SLIGHTLY ADJUSTED BASED ON A 1357Z QUIKSCAT OVERPASS.

 
 
FORECAST POSITIONS AND MAX WINDS
 
INITIAL      16/2100Z 13.8N 117.6W    55 KT
 12HR VT     17/0600Z 14.1N 119.0W    65 KT
 24HR VT     17/1800Z 14.6N 120.7W    75 KT
 36HR VT     18/0600Z 15.2N 122.6W    80 KT
 48HR VT     18/1800Z 16.2N 124.8W    75 KT
 72HR VT     19/1800Z 18.0N 128.5W    65 KT
 96HR VT     20/1800Z 20.0N 132.0W    45 KT
120HR VT     21/1800Z 21.5N 134.0W    30 KT
 
$$
FORECASTER ROBERTS/KNABB
 
NNNN


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Page last modified: Monday, 11-Sep-2006 11:28:42 UTC