000
AXNT20 KNHC 252337
TWDAT 

TROPICAL WEATHER DISCUSSION
NWS NATIONAL HURRICANE CENTER MIAMI FL  
805 PM EDT FRI MAR 25 2011

TROPICAL WEATHER DISCUSSION FOR NORTH AMERICA...CENTRAL 
AMERICA...GULF OF MEXICO...CARIBBEAN SEA...NORTHERN SECTION 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 ANALYZED FROM SIERRA LEONE AT 08N13W TO 03N25W 
CROSSING THE EQUATOR NEAR 29W THEN TO 02S33W AND INTO NE BRAZIL 
AT 02S43W. SCATTERED MODERATE TO STRONG CONVECTION IS ALONG THE 
COAST OF GHANA FROM 03N-05N BETWEEN THE PRIME MERIDIAN AND 03W.
ISOLATED MODERATE CONVECTION IS FROM EQ-03N BETWEEN 22W-28W... 
AND FROM 07S-EQ BETWEEN 26W-34W.

...DISCUSSION...

GULF OF MEXICO...
AS OF 2100 UTC...A 1015 MB HIGH IS CENTERED OFF THE COAST OF 
FLORIDA NEAR 26N83W PRODUCING FAIR WEATHER. 10-15 KT MOSTLY SE 
WINDS ARE OVER THE GULF OF MEXICO W OF 87W. IN THE UPPER LEVELS 
AN UPPER LEVEL RIDGE IS CENTERED OVER THE GULF WITH AXIS ALONG 
85W. STRONG SUBSIDENCE DOMINATES THE AREA S OF 27N INHIBITING 
CONVECTION. EXPECT LITTLE CHANGE OVER THE NEXT 24 HOURS. 

CARIBBEAN SEA...
A 1005 MB LOW IS CENTERED OVER N COLOMBIA NEAR 08N72W. WIDELY 
SCATTERED MODERATE CONVECTION IS FROM 07N-12N BETWEEN 72W-76W. 
10-20 KT TRADEWINDS WITH MOSTLY FAIR WEATHER DOMINATES THE 
CARIBBEAN SEA AND CENTRAL AMERICA. STRONGEST WINDS ARE ALONG THE 
COAST OF N COLOMBIA. PATCHES OF BROKEN LOW CLOUDS WITH SCATTERED 
SHOWERS ARE HOWEVER OVER THE HIGHER ELEVATIONS OF PUERTO 
RICO...AND HISPANIOLA. BROKEN LOW CLOUDS ARE ALSO ALONG THE 
COASTS OF PANAMA...COSTA RICA...NICARAGUA...AND HONDURAS. IN THE 
UPPER LEVELS...RIDGING IS NOTED E OF 80W WITH SCATTERED HIGH 
CLOUD S OF 17N E OF 80W. STRONG SUBSIDENCE IS OVER THE REMAINDER 
OF THE AREA. EXPECT OVER THE NEXT 24 HOURS FOR BROKEN LOW CLOUDS 
AND SCATTERED SHOWERS TO BE OVER THE S CARIBBEAN S OF 17N. 

ATLANTIC OCEAN...
A COLD FRONT IS OVER THE W ATLANTIC FROM 32N52W TO 29N60W. A 
STATIONARY FRONT CONTINUES W TO 29N72W. SCATTERED SHOWERS ARE 
WITHIN 90 NM N OF THE FRONTS. A 1024 MB HIGH IS LOCATED OVER THE 
CENTRAL ATLANTIC NEAR 28N38W. A WEAK 1019 MB LOW IS FURTHER E AT 
25N34W. A SURFACE TROUGH EXTENDS NE OF THE LOW TO 28N31W. 
ANOTHER 1024 MB HIGH IS OVER THE E ATLANTIC NEAR 31N22W. IN THE 
UPPER LEVELS... A BROAD TROUGH IS N OF 25N AND W OF 55W 
SUPPORTING THE SURFACE FRONTS. AN UPPER LEVEL RIDGE IS OVER THE 
CENTRAL ATLANTIC N OF 20N BETWEEN 40W-55W. AN UPPER UPPER LEVEL 
TROUGH IS N OF 20N E OF 40W. AN UPPER LEVEL HIGH IS OVER THE 
TROPICAL ATLANTIC FROM EQ-12N BETWEEN 15W-60W WITH AXIS ALONG 
5N. EXPECT IN THE NEXT 24 HOURS FOR...THE COLD FRONT TO MOVE E 
WITH SHOWERS...AND FOR THE E ATLANTIC LOW AND TROUGH TO 
DISSIPATE.

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

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FORMOSA