000
AXNT20 KNHC 222335
TWDAT 

TROPICAL WEATHER DISCUSSION
NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL  
805 PM EDT MON MAR 22 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...

...ITCZ...

ITCZ AXIS IS CENTERED ALONG 7N10W 4N20W CROSSING THE EQUATOR 
NEAR 45W AND INTO NE BRAZIL NEAR 2S50W. SCATTERED MODERATE 
CONVECTION IS FROM THE EQUATOR TO 2N BETWEEN 36W-38W...AND FROM 
2N-4N BETWEEN 33W-39W. 

...DISCUSSION...

GULF OF MEXICO...
AS OF 2100 UTC...A 1020 MB HIGH IS CENTERED OVER THE SW GULF OF 
MEXICO NEAR 21N92W PRODUCING 10-15 ANTICYCLONIC SURFACE WINDS 
AND FAIR WEATHER OVER MOST OF THE GULF. THE NE GULF AND N 
FLORIDA IN CONTRAST STILL HAS 20-25 NW WINDS DUE TO A TIGHTER 
SURFACE GRADIENT...AND BROKEN TO OVERCAST LOW CLOUDS. IN THE 
UPPER LEVELS...AN UPPER LEVEL TROUGH IS OVER THE GULF WITH AXIS 
ALONG 85W. VERY STRONG UPPER LEVEL SUBSIDENCE DOMINATES THE AREA 
EXCEPT OVER TEXAS AND SURROUNDING WATERS. EXPECT IN 24 HOURS 
FOR...THE SURFACE HIGH TO MOVE TO THE NE GULF AND PRODUCE LIGHT 
WINDS AND FAIR WEATHER FOR THE ENTIRE GULF. 

CARIBBEAN SEA...
AS OF 2100 UTC...THE TAIL END OF A COLD FRONT EXTENDS FROM 
CENTRAL CUBA TO NE NICARAGUA ALONG 22N77W 18N82W 14N84W. BROKEN 
TO OVERCAST LOW CLOUDS AND SCATTERED SHOWERS ARE WITHIN 180 NM W 
OF THE FRONT. SCATTERED MODERATE CONVECTION IS ALSO ALONG THE 
COASTS OF NICARAGUA AND COSTA RICA FROM 12N-14N BETWEEN 
81W-83W...AND FROM 9N-12N BETWEEN 83W-85W. FRESH TO STRONG 
TRADEWINDS DOMINATE THE MAJORITY OF THE EASTERN AND CENTRAL 
CARIBBEAN WITH STRONGEST WINDS ALONG THE COAST OF N COLOMBIA. 
ELSEWHERE...AN AREA OF BROKEN LOW CLOUDS WITH ISOLATED SHOWERS 
ARE OVER THE LEEWARD ISLANDS FROM 12N-20N BETWEEN 60W-67W. IN 
THE UPPER LEVELS...AN UPPER LEVEL HIGH IS CENTERED N OF COLOMBIA 
NEAR 12N77W. STRONG SUBSIDENCE IS OVER THE CARIBBEAN SEA AND 
CENTRAL AMERICA EXCEPT OVER THE SW CARIBBEAN WHERE HIGH CLOUDS 
AND UPPER LEVEL MOISTURE ARE NOTED. EXPECT IN 24 HOURS FOR...THE 
COLD FRONT TO EXTEND FROM E CUBA TO COSTA RICA WITH RAIN AND 
SHOWERS.

ATLANTIC OCEAN...
A COLD FRONT IS OVER THE W ATLANTIC FROM 32N75W TO CENTRAL CUBA 
NEAR 22N77W. WIDELY SCATTERED MODERATE CONVECTION IS FROM 26N TO 
BEYOND 32N BETWEEN 71W-77W. SCATTERED SHOWERS ARE WITHIN 90 NM 
OF THE REMAINDER OF THE FRONT. A 1032 MB HIGH IS CENTERED OVER 
THE CENTRAL ATLANTIC NEAR 37N50W. A COLD FRONT IS OVER THE E 
ATLANTIC FROM 32N29W TO 25N40W 23N49W. SCATTERED SHOWERS ARE 
WITHIN 45 NM OF THE FRONT. A 1022 MB HIGH IS CENTERED OVER THE E 
ATLANTIC NEAR 32N23W. IN THE UPPER LEVELS...AN UPPER LEVEL RIDGE 
IS OVER THE W ATLANTIC W OF 50W. ZONAL FLOW IS N OF 20N E OF 
50W. AN UPPER LEVEL LOW IS CENTERED OVER THE TROPICAL E ATLANTIC 
NEAR 8N53W. UPPER LEVEL CYCLONIC FLOW IS S OF 15N BETWEEN 
40W-60W. EXPECT IN 24 HOURS FOR...THE W ATLANTIC COLD FRONT TO 
EXTEND FROM 32N65W TO E CUBA WITH CONVECTION. ALSO EXPECT... THE 
E ATLANTIC COLD FRONT TO MOVE E AND REACH THE CANARY ISLANDS 
WITH SHOWERS. 

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

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FORMOSA