000
AXNT20 KNHC 261759
TWDAT 

TROPICAL WEATHER DISCUSSION
NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL  
105 PM EST FRI FEB 26 2010

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 1200 UTC SURFACE ANALYSIS AND SATELLITE IMAGERY
THROUGH 1715 UTC.

...THE ITCZ...
FROM NORTHERN COASTAL LIBERIA NEAR 7N11W TO 4N21W TO 2N30W...
CROSSING THE EQUATOR ALONG 37W...INTO NORTHEASTERN BRAZIL
NEAR 2S50W. ISOLATED MODERATE SHOWERS ARE FROM 3N TO 6N
BETWEEN 10W AND 21W. SHOWERS ARE POSSIBLE TO THE SOUTH OF 7N
BETWEEN 21W AND 50W.

...DISCUSSION...

WITH THE COLD FRONT THAT EXTENDS FROM THE ATLANTIC OCEAN NEAR 
32N58W...ACROSS PUERTO RICO...INTO THE EAST CENTRAL CARIBBEAN 
SEA TO THE EAST CENTRAL COAST OF PANAMA...AND THE GULF OF 
MEXICO...
DEEP LAYER CYCLONIC FLOW COVERS THE AREA TO THE NORTH OF 20N 
BETWEEN 60W AND THE WEST CENTRAL GULF OF MEXICO. UPPER LEVEL 
SOUTHWESTERLY WIND FLOW MOVES FROM THE EASTERN PACIFIC OCEAN...
THROUGH 15N110W...ACROSS MEXICO...INTO THE SOUTHWESTERN CORNER
OF THE GULF OF MEXICO NEAR 22N93W...ACROSS LAKE OKEECHOBEE IN
SOUTH FLORIDA...BEYOND BERMUDA. THE UPPER LEVEL SOUTHWESTERLY 
FLOW GRADUALLY MIXES WITH THE PURELY CYCLONIC FLOW ALONG 30N
NEAR 67W. SHOWERS ARE POSSIBLE IN THE ATLANTIC OCEAN TO THE 
NORTH OF 25N BETWEEN 40W AND 56W. SURFACE HIGH PRESSURE COVERS 
THE GULF OF MEXICO AND THE NORTHWESTERN CARIBBEAN SEA...AROUND
A RIDGE THAT EXTENDS FROM THE FLORIDA PANHANDLE TO 20N80W.

THE REST OF THE CARIBBEAN SEA...
BROKEN TO OVERCAST LOW LEVEL TO MIDDLE LEVEL CLOUDS AND POSSIBLE 
PRECIPITATION COVER THE AREA FROM 18N TO 22N BETWEEN 60W AND 
74W...ON TOP OF PARTS OF HISPANIOLA AND POSSIBLY PUERTO RICO.
A SURFACE TROUGH REACHES THE EASTERN CARIBBEAN SEA FROM THE 
ATLANTIC OCEAN...PART OF A TROUGH THAT PASSES THROUGH 19N50W
TO 17N54W TO 16N62W. THIS TROUGH IS MARKED BY A WELL-DEFINED
LINE OF CLOUDS ON VISIBLE SATELLITE IMAGERY. BROAD UPPER LEVEL
ANTICYCLONIC FLOW COVERS THE AREA.

THE REST OF THE ATLANTIC OCEAN...
A DEEP LAYER EASTERN ATLANTIC OCEAN TROUGH THAT PASSES THROUGH 
32N25W TO 27N26W TO 20N30W SUPPORTS THE 994 MB LOW PRESSURE 
CENTER AND SURFACE TROUGH THAT ARE NEAR THE SAME AREA. THE 
SURFACE TROUGH EXTENDS FROM THE 994 MB LOW CENTER THAT IS NEAR 
29N31W...TO 28N28W 26N30W TO 21N40W TO 19N50W...AND EVENTUALLY
TO 16N62W IN THE EASTERN CARIBBEAN SEA. A 1011 LOW PRESSURE 
CENTER IS NEAR 20N53W. THIS LOW CENTER NOW APPEARS TO HAVE 
BECOME SEPARATED FROM THE TROUGH...IN VISIBLE SATELLITE IMAGERY.
ANY PRECIPITATION THAT MAY BE ASSOCIATED WITH THIS SYSTEM APPEARS
TO BE WITHIN 30 NM TO 45 NM ON EITHER SIDE OF THE TROUGH TO THE 
NORTH OF 20N.

FOR ADDITIONAL INFORMATION PLEASE VISIT 
HTTP://WWW.HURRICANES.GOV/MARINE

$$
MT