000
AXNT20 KNHC 042342
TWDAT 

TROPICAL WEATHER DISCUSSION
NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL  
805 PM EDT SUN APR 04 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 1800 UTC SURFACE ANALYSIS AND SATELLITE IMAGERY
THROUGH 2315 UTC...

...THE ITCZ...
ITCZ AXIS IS CENTERED ALONG 8N10W 4N20W 1N40W INTO NORTHEASTERN 
BRAZIL NEAR 1S48W. SCATTERED MODERATE CONVECTION IS FROM 2N-5N 
BETWEEN 18W-23W.

...DISCUSSION...

THE GULF OF MEXICO...
A 1024 MB HIGH IS CENTERED OVER THE W ATLANTIC OFF THE COAST OF 
GEORGIA NEAR 32N77W. A RIDGE AXIS EXTENDS SW TO THE BAY OF 
CAMPECHE NEAR 21N97W. 10-15 KT SW FLOW COVERS THE GULF OF 
MEXICO. FAIR WEATHER ALSO COVERS THE GULF EXCEPT FOR A PATCH OF 
BROKEN LOW CLOUDS OVER THE W GULF FROM 22N-27N BETWEEN 94W-96W. 
IN THE UPPER LEVELS...ZONAL FLOW AND STRONG SUBSIDENCE COVERS 
THE GULF. A BAND OF UPPER LEVEL MOISTURE AND BROKEN HIGH CLOUDS 
IS HOWEVER OVER INLAND MEXICO FROM 16N-24N BETWEEN 97W-107W 
MOVING E. EXPECT IN 24 HOURS FOR A 1022 MB HIGH TO MOVE TO THE 
NE GULF AND PRODUCE CONTINUED FAIR WEATHER.    

THE CARIBBEAN SEA...
FRESH TO STRONG TRADEWINDS ARE OVER THE CARIBBEAN AND CENTRAL 
AMERICA WITH STRONGEST WINDS ALONG THE COAST OF N COLOMBIA. 
BROKEN TO OVERCAST LOW CLOUDS WITH SCATTERED SHOWERS ARE OVER 
CENTRAL AMERICA FROM BELIZE TO PANAMA...AND OVER THE SW 
CARIBBEAN S OF 18N W OF 80W. MOSTLY FAIR WEATHER IS OVER THE 
REMAINDER OF THE CARIBBEAN. IN THE UPPER LEVELS...ZONAL FLOW 
COVERS THE AREA. A BAND OF UPPER LEVEL MOISTURE AND BROKEN HIGH 
CLOUDS EXTENDS FROM BELIZE TO JAMAICA. SIMILAR HIGH CLOUD IS 
OVER COSTA RICA...PANAMA...AND N COLOMBIA. THE REMAINDER OF THE 
CARIBBEAN HAS STRONG SUBSIDENCE. EXPECT IN 24 HOURS FOR SHOWERS 
TO SPREAD OVER THE S CARIBBEAN S OF 14N.   

THE ATLANTIC OCEAN...
A 1024 MB HIGH IS CENTERED OVER THE W ATLANTIC OFF THE COAST OF 
GEORGIA NEAR 32N77W PRODUCING FAIR WEATHER. A 1003 MB LOW IS 
CENTERED OVER THE CENTRAL ATLANTIC NEAR 32N50W. A COLD FRONT 
EXTENDS S FROM 32N42W TO 26N45W 17N54W. A DISSIPATED COLD FRONT 
CONTINUES TO THE LEEWARD ISLANDS NEAR 15N60W. SCATTERED SHOWERS 
ARE WITHIN 60 NM OF THE FRONT N OF 20N. A 1028 MB HIGH IS OVER 
THE E ATLANTIC NEAR SPAIN AT 42N11W. A SURFACE RIDGE AXIS 
EXTENDS SW FROM THE HIGH TO 32N25W 25N35W. IN THE UPPER 
LEVELS...ZONAL FLOW IS OVER THE W ATLANTIC W OF 65W. AN UPPER 
LEVEL TROUGH IS N OF 20N BETWEEN 45W-65W. A LARGE UPPER LEVEL 
RIDGE IS OVER THE E ATLANTIC N OF 10N E OF 45W WITH AXIS ALONG 
30W. EXPECT IN 24 HOURS FOR THE COLD FRONT TO MOVE SLOWLY E AND 
BE ALONG 32N37W 18N50W WITH SHOWERS.    

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

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FORMOSA