000
AXNT20 KNHC 061143
TWDAT 

TROPICAL WEATHER DISCUSSION
NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL
705 AM EST FRI FEB 06 2009

TROPICAL WEATHER DISCUSSION FOR NORTH AMERICA...CENTRAL 
AMERICA...GULF OF MEXICO...CARIBBEAN SEA...NORTHERN SECTIONS
OF SOUTH AMERICA...AND ATLANTIC OCEAN TO THE AFRICAN COAST
FROM THE EQUATOR TO 32N. THE FOLLOWING INFORMATION IS BASED
ON SATELLITE IMAGERY...METEOROLOGICAL ANALYSIS...WEATHER
OBSERVATIONS...AND RADAR.

BASED ON 0600 UTC SURFACE ANALYSIS AND SATELLITE IMAGERY
THROUGH 1115 UTC.

...THE ITCZ...

FROM 7N10W IN LIBERIA TO 3N20W 1N30W...CROSSING THE EQUATOR
ALONG 40W...INTO NORTHEASTERN BRAZIL NEAR 2S48W. ISOLATED
AND DISORGANIZED SHOWERS ARE SOUTH OF 5N BETWEEN 6W AND THE 
EXTREME NORTHEASTERN BRAZIL/FRENCH GUIANA COASTAL BORDER
ALONG 51W/52W.
 
...DISCUSSION...

THE GULF OF MEXICO...
A SURFACE RIDGE EXTENDS FROM A 1036 MB HIGH PRESSURE CENTER NEAR 
31N84W ALONG THE FLORIDA/GEORGIA BORDER...INTO THE SOUTHWESTERN 
GULF OF MEXICO. THIS RIDGE HAS SETTLED INTO THE AREA IN THE WAKE 
OF THE LAST ARCTIC COLD FRONT TO HIT THE GULF OF MEXICO AND THE 
SOUTHEASTERN U.S.A. MIDDLE TO UPPER LEVEL CYCLONIC FLOW COVERS 
THE AREA EAST OF 90W...ON THE WESTERN SIDE OF THE DEEP LAYER 
TROUGH THAT SUPPORTS THE COLD FRONT THAT MOVED THROUGH THE GULF 
OF MEXICO ON WEDNESDAY 04 FEBRUARY AND NOW IS IN THE ATLANTIC 
OCEAN. UPPER LEVEL NORTHWESTERLY WINDS STILL COVER THE AREA TO 
THE WEST OF 90W.

THE CARIBBEAN SEA...
A COLD FRONT PASSES THROUGH 20N66W IN THE ATLANTIC OCEAN...
TO THE EASTERN TIP OF THE DOMINICAN REPUBLIC...TO 18N70W.
A STATIONARY FRONT CONTINUES FROM 18N70W TO 14N76W CURVING TO
THE PANAMA COAST NEAR 9N81W. UPPER LEVEL SOUTHWESTERLY WIND FLOW 
MOVES ON TOP OF THE AREA OF THE COLD FRONT/STATIONARY FRONT...
TO THE WEST OF THE LINE FROM 20N64W TO 13N70W. WEAK MIDDLE TO 
UPPER LEVEL CYCLONIC FLOW FROM THE ATLANTIC OCEAN SPILLS INTO 
THE CARIBBEAN SEA...TO THE EAST OF THE 20N64W 13N70W LINE.
AN INVERTED SURFACE TROUGH IS ALONG 60W/61W ACCORDING TO THE
LATEST SHORTWAVE INFRARED IMAGERY. CLOUDS AND POSSIBLE SHOWERS 
FROM 12N TO 18N BETWEEN 57W AND 63W.

THE ATLANTIC OCEAN...
DEEP LAYER CYCLONIC FLOW FROM A TROUGH COVERS THE AREA WEST OF 
60W. THIS TROUGH SUPPORTS THE CURRENT STRONG COLD FRONT THAT 
PASSES THROUGH 32N55W TO 26N60W 20N67W TO THE EASTERN TIP OF
THE DOMINICAN REPUBLIC. A DEEP LAYER TROUGH IS IN THE EASTERN 
ATLANTIC OCEAN...PASSING THROUGH 32N16W TO 25N20W TO 20N29W.
THE COLD FRONT THAT IS SUPPORTED BY THE TROUGH PASSES THROUGH 
MOROCCO TO THE NORTHWESTERN CORNER OF THE WESTERN SAHARA...
TO 22N22W TO 25N30W. A MIDDLE TO UPPER LEVEL TROUGH IS ALONG 
19N34W TO A CYCLONIC CIRCULATION CENTER NEAR 15N45W...TO THE 
COASTAL BORDER OF FRENCH GUIANA AND SURINAME. UPPER LEVEL 
ANTICYCLONIC FLOW FROM A RIDGE IS ON TOP OF THE AREA NORTH OF 
10N BETWEEN THE EASTERN ATLANTIC OCEAN TROUGH AND THE TROUGH 
WITH THE 32N55W 20N67W COLD FRONT. BROAD SURFACE HIGH PRESSURE 
COVERS THE ATLANTIC OCEAN AROUND A 1032 MB HIGH PRESSURE CENTER 
NEAR 33N38W...IN BETWEEN THE TWO COLD FRONTS.

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