000
AXNT20 KNHC 280552
TWDAT 

TROPICAL WEATHER DISCUSSION     
NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL
205 AM EDT MON APR 28 2008

TROPICAL WEATHER DISCUSSION FOR NORTH AMERICA...CENTRAL 
AMERICA...THE GULF OF MEXICO...THE CARIBBEAN SEA...NORTHERN 
SECTIONS OF SOUTH AMERICA...AND THE 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.

...THE ITCZ...

THE ITCZ AXIS IS CENTERED ALONG 6N10W 3N20W 1N35W... CROSSING 
THE EQUATOR NEAR 40W...AND INTO NE BRAZIL NEAR 2S45W.  WIDELY 
SCATTERED MODERATE CONVECTION IS ALONG THE COAST OF W AFRICA 
FROM 2N-6N BETWEEN 1W-10W.  SCATTERED MODERATE TO STRONG 
CONVECTION IS FROM 2S-1N BETWEEN 22W-27W.  SCATTERED MODERATE 
CONVECTION IS FROM EQ-1N BETWEEN 39W-42W...AND FROM EQ-2N 
BETWEEN 46W-51W.   

...DISCUSSION...

GULF OF MEXICO...
AS OF 0300 UTC...A COLD FRONT EXTENDS FROM S LOUISIANA TO NE 
MEXICO ALONG 29N90W 24N99W.  SCATTERED MODERATE CONVECTION IS 
OVER THE NW GULF OF MEXICO FROM 24N-29N BETWEEN 94W-97W.  25-30 
KT NLY WINDS ARE N OF THE FRONT.  THE REMAINDER OF THE GULF OF 
MEXICO HAS 10-15 KT SELY WINDS WITH MOSTLY FAIR WEATHER.  IN THE 
UPPER LEVELS...A RIDGE IS OVER THE GULF WITH AXIS ALONG 83W.  
SIGNIFICANT UPPER LEVEL MOISTURE AND BROKEN TO OVERCAST HIGH 
CLOUDS ARE OVER MOST OF THE GULF EXCEPT FOR S FLORIDA...THE 
STRAITS OF FLORIDA...AND THE YUCATAN CHANNEL.  EXPECT...THE COLD 
FRONT TO MOVE E OVER THE GULF DURING THE NEXT 24 HOURS AND 
EXTEND FROM CENTRAL FLORIDA TO THE BAY OF CAMPECHE ALONG 28N80W 
23N90W 18N95W WITH CONVECTION.  ALSO EXPECT GALE FORCE WINDS N 
OF THE FRONT W OF 94W WITHIN 12 HOURS.   

CARIBBEAN SEA...
MODERATE TO FRESH TRADEWINDS ARE OVER THE CARIBBEAN SEA. BROKEN 
TO OVERCAST MULTILAYERED CLOUDS WITH SCATTERED SHOWERS ARE OVER 
MOST OF THE CARIBBEAN SEA EXCEPT FOR THE NW CARIBBEAN N OF 16N 
AND W OF 78W WHERE FAIR SKIES PREVAIL.  A 1007 MB LOW IS INLAND 
OVER N COLOMBIA NEAR 10N72W.  IN THE UPPER LEVELS ZONAL FLOW IS 
OVER THE ENTIRE SEA.  CONSIDERABLE UPPER LEVEL MOISTURE IS S OF 
15N.  STRONG SUBSIDENCE COVERS THE REMAINDER OF THE SEA.  EXPECT 
SCATTERED SHOWERS AND ISOLATED THUNDERSTORMS OVER THE SW 
CARIBBEAN S OF 15N AND W OF 75W DURING THE NEXT 24 HOURS.

ATLANTIC OCEAN...
A 1022 MB HIGH OFF THE COAST OF SOUTH CAROLINA NEAR 30N71W 
PRODUCING FAIR WEATHER OVER FLORIDA AND THE NW ATLANTIC.  A 
DISSIPATING COLD FRONT IS OVER THE CENTRAL ATLANTIC FROM 32N44W 
TO 26N47W 22N56W.  SCATTERED SHOWERS ARE WITHIN 90 MN OF THE 
FRONT.  A 1031 MB HIGH IS CENTERED N OF THE AZORES NEAR 42N28W.  
A SURFACE RIDGE AXIS EXTENDS SW FROM THIS HIGH CENTER TO 
26N38W.  IN THE UPPER LEVELS...A TROUGH IS N OF 20N BETWEEN 
50W-80W.  A LARGE UPPER LEVEL RIDGE IS BETWEEN 25W-50W.  AN 
UPPER LEVEL TROUGH IS N OF 15N AND E OF 25W TO THE COAST OF W 
AFRICA.  IN THE TROPICS A LARGE UPPER LEVEL HIGH IS CENTERED 
NEAR 7N48W.  EXPECT THE DISSIPATING FRONT TO BECOME SURFACE 
TROUGH AND CONTINUE TO MOVE E OVER THE NEXT 24 HOURS WITH 
SCATTERED SHOWERS. 
  
$$
FORMOSA