000
AXNT20 KNHC 281037
TWDAT 

TROPICAL WEATHER DISCUSSION     
NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL
805 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 0600 UTC SURFACE ANALYSIS AND SATELLITE IMAGERY THROUGH
1015 UTC.

...THE ITCZ...

THE ITCZ AXIS IS CENTERED ALONG 7N10W 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 EQ-4N BETWEEN 5W-9W.  SCATTERED MODERATE TO ISOLATED STRONG 
CONVECTION IS FROM 4N-7N BETWEEN 10W-14W...AND FROM 2S-2N 
BETWEEN 24W-30W.  ISOLATED MODERATE CONVECTION IS FROM EQ-2N 
BETWEEN 35W-51W.   

...DISCUSSION...

GULF OF MEXICO...
AS OF 0900 UTC...A COLD FRONT EXTENDS FROM S ALABAMA TO TAMPICO 
MEXICO ALONG 31N88W 25N90W 22N98W.  SCATTERED MODERATE 
CONVECTION IS OVER THE W GULF OF MEXICO NEAR TAMPICO MEXICO FROM 
20N-22N BETWEEN 96W-98W.  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 80W.  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 S FLORIDA TO 
THE BAY OF CAMPECHE ALONG 27N80W 22N90W 17N95W WITH CONVECTION.  
ALSO EXPECT GALE FORCE WINDS W OF FRONT S OF 25N WITHIN 6 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 75W WHERE FAIR SKIES PREVAIL.  A 1008 MB LOW IS INLAND 
OVER N COLOMBIA NEAR 8N73W.  IN THE UPPER LEVELS A RIDGE IS OVER 
THE ENTIRE SEA WITH AXIS ALONG 80W.  SWLY UPPER LEVEL FLOW IS 
OVER CENTRAL AMERICA WHILE ZONAL FLOW IS E OF 80W.  CONSIDERABLE 
UPPER LEVEL MOISTURE IS S OF 15N.  STRONG SUBSIDENCE COVERS THE 
REMAINDER OF THE SEA.  EXPECT SCATTERED SHOWERS AND ISOLATED 
THUNDERSTORMS OVER THE CENTRAL CARIBBEAN BETWEEN 70W-85W DURING 
THE NEXT 24 HOURS.

ATLANTIC OCEAN...
A 1022 MB HIGH OFF THE COAST OF SOUTH CAROLINA NEAR 30N69W 
PRODUCING FAIR WEATHER OVER FLORIDA AND THE NW ATLANTIC.  A 
SURFACE TROUGH IS OVER THE CENTRAL ATLANTIC FROM 32N42W TO 
26N45W 21N50W.  SCATTERED SHOWERS ARE WITHIN 90 NM OF THE 
TROUGH.  A 1031 MB HIGH IS CENTERED N OF THE AZORES NEAR 
42N28W.  A SURFACE RIDGE AXIS EXTENDS SW FROM THIS HIGH CENTER 
TO 28N36W.  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 SURFACE TROUGH TO DRIFT E OVER THE NEXT 
24 HOURS WITH SCATTERED SHOWERS. 
  
$$
FORMOSA