000
AXNT20 KNHC 280545
TWDAT 

TROPICAL WEATHER DISCUSSION
NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL
205 AM EDT SAT MAR 28 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 0000 UTC SURFACE ANALYSIS AND SATELLITE IMAGERY THROUGH 
0515 UTC.

...ITCZ...

ITCZ AXIS IS CENTERED ALONG 5N8W 3N20W DIPPING TO S OF THE 
EQUATOR NEAR 25W...THEN CONTINUING W TO 2S30W TO NE BRAZIL NEAR 
1S46W. SCATTERED MODERATE CONVECTION IS FROM 1S-4S BETWEEN 
12W-15W. SCATTERED MODERATE TO STRONG CONVECTION IS FROM 2S-4S 
BETWEEN 18W-23W. WIDELY SCATTERED MODERATE CONVECTION IS FROM 
1N-6S BETWEEN 31W-39W. 

...DISCUSSION...

GULF OF MEXICO...
AS OF 0300 UTC...A COLD FRONT EXTENDS FROM S LOUISIANA TO N OF 
TAMPICO MEXICO ALONG 30N93W 23N97W MOVING RAPIDLY SE. SCATTERED 
MODERATE TO STRONG CONVECTION IS INLAND OVER THE NE GULF STATES 
FROM 30N-35N BETWEEN 85W-92W. WINDS BEHIND THE COLD FRONT ALONG 
THE COAST OF TEXAS ARE PRESENTLY 25 KT FROM THE N. WINDS S OF 
THE FRONT ARE 20-25 KT FROM THE S. THE COLD AIR BEHIND THE FRONT 
LAGS A BIT AND HAS NOT REACHED THE COAST YET. BROKEN TO OVERCAST 
MULTILAYERED CLOUDS ARE OVER THE N GULF N OF 24N. IN THE UPPER 
LEVELS... A RIDGE IS OVER THE GULF WITH AXIS ALONG 85W. A BAND 
OF SIGNIFICANT UPPER LEVEL MOISTURE AND BROKEN HIGH CLOUDS ARE 
OVER THE CENTRAL GULF FROM 24N-27N. EXPECT...THE COLD FRONT TO 
EXTEND FROM THE FLORIDA PANHANDLE TO THE YUCATAN PENINSULA IN 24 
HOURS WITH CONVECTION PREDOMINATELY OVER THE NE GULF AND N 
FLORIDA. ALSO EXPECT GALE FORCE WINDS BEHIND THE FRONT OVER THE 
NW GULF IN A FEW HOURS.      
     
CARIBBEAN SEA...
FRESH TRADEWINDS ARE OVER THE CARIBBEAN SEA WITH PATCHES OF 
BROKEN TO OVERCAST LOW CLOUDS AND SCATTERED SHOWERS ENTRAINING 
OVER THE WINDWARD ISLANDS AND N VENEZUELA E OF 72W. MORE 
SCATTERED SHOWERS ARE OVER PUERTO RICO...HISPANIOLA...E 
CUBA...AND JAMAICA. IN THE UPPER LEVELS...A RIDGE IS OVER THE 
CARIBBEAN AND CENTRAL AMERICA. STRONG SUBSIDENCE IS OVER THE 
CARIBBEAN AND CENTRAL AMERICA EXCEPT OVER TRINIDAD AND NE 
VENEZUELA. EXPECT CONTINUED SHOWERS OVER THE WINDWARD ISLANDS 
FOR THE NEXT 24 HOURS. 

ATLANTIC OCEAN...
A 1023 MB HIGH IS OVER THE W ATLANTIC NEAR 30N66W. A COLD FRONT 
IS OVER THE CENTRAL ATLANTIC FROM 32N40W TO 24N46W. A WEAKENING 
STATIONARY FRONT CONTINUES S TO 15N54W. BROKEN TO OVERCAST COLD 
AIR STRATOCUMULUS CLOUDS ARE BEHIND THE FRONT FROM 20N-30N TO 
72W. SCATTERED SHOWERS ARE WITHIN 90 NM OF THE FRONT. A SURFACE 
TROUGH IS OVER THE CANARY ISLANDS ALONG 30N13W 25N20W. SCATTERED 
SHOWERS ARE WITHIN 120 NM E OF THE TROUGH N OF 28N. IN THE UPPER 
LEVELS...A RIDGE IS OVER THE W ATLANTIC W OF 70W. A TROUGH IS 
OVER THE W ATLANTIC N OF 20N BETWEEN 60W-70W. A LARGE UPPER 
LEVEL RIDGE IS OVER THE CENTRAL AND EAST ATLANTIC BETWEEN 
15W-60W. AN UPPER LEVEL HIGH IS CENTERED OVER THE TROPICAL 
ATLANTIC NEAR 7N30W. EXPECT...THE COLD FRONT TO MOVE E OVER THE 
NEXT 24 HOURS WITH SHOWERS. 

$$
FORMOSA