000
AXNT20 KNHC 050517
TWDAT 

TROPICAL WEATHER DISCUSSION
NWS NATIONAL HURRICANE CENTER MIAMI FL  
205 AM EDT TUE APR 05 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 0000 UTC SURFACE ANALYSIS AND SATELLITE IMAGERY
THROUGH 0445 UTC.

...THE ITCZ...

FROM THE CENTRAL LIBERIA COAST TO 3N20W 1N30W...CROSSING THE
EQUATOR ALONG 33W...REACHING BRAZIL NEAR 3S44W. ISOLATED 
MODERATE RAINSHOWERS TO LOCALLY STRONG THUNDERSTORMS ARE TO
THE SOUTH OF 07N TO THE EAST OF 53W.

...DISCUSSION...

THE GULF OF MEXICO...
A DEEP LAYER TROUGH THAT IS MOVING THROUGH THE CENTRAL U.S.A. 
SUPPORTS THE COLD FRONT THAT PASSES THROUGH SOUTHEASTERN 
LOUISIANA INTO THE WEST CENTRAL GULF OF MEXICO...AND THEN CURVES 
NORTHWESTWARD ACROSS INTERIOR MEXICO TO SOUTHWESTERN NEW MEXICO 
IN THE U.S.A. STRONG RAINSHOWERS AND THUNDERSTORMS ARE WITHIN
30 NM ON EITHER SIDE OF THE LINE THAT PASSES THROUGH THE WESTERN 
FLORIDA PANHANDLE TO 27N92W...AND IN MEXICO FROM 20N TO 22N 
BETWEEN 98W AND 99W.

THE CARIBBEAN SEA...
BROAD UPPER LEVEL ANTICYCLONIC FLOW MOVES AROUND AN UPPER LEVEL
RIDGE THAT IS ORIENTED FROM VENEZUELA TOWARD CUBA. RAINSHOWERS
ARE POSSIBLE FROM 15N TO 20N BETWEEN 56W AND 70W IN CLOUDS THAT
ARE MOVING WESTWARD WITH THE TRADEWIND FLOW. RAINSHOWERS ALSO 
ARE POSSIBLE FROM EAST TO WEST ACROSS HISPANIOLA...AND TO THE 
SOUTH OF 13N BETWEEN 78W ALONG THE PANAMA COAST AND 86W IN
NICARAGUA.

THE ATLANTIC OCEAN...
A DEEP LAYER TROUGH PASSES THROUGH 33N43W TO 27N48W. THIS TROUGH 
SUPPORTS A COLD FRONT THAT PASSES THROUGH 32N39W TO 26N44W TO 
23N52W. THIS FRONT IS GENERATING THE FOLLOWING CONDITIONS...
TO THE NORTH OF 27N TO THE EAST OF THE FRONT TO 35W...SOUTH TO
SOUTHWESTERLY WINDS RANGING FROM 20 TO 25 KT...SEA HEIGHTS
RANGING FROM 8 TO 11 FT IN NORTHWESTERLY SWELL. THE WEATHER
THAT IS TO THE NORTH OF 27N TO THE WEST OF THE FRONT TO 55W
WILL BE...WESTERLY TO NORTHWESTERLY WINDS RANGING FROM 20 TO
25 KT...AND SEA HEIGHTS RANGING FROM 11 TO 17 FT IN NORTHWESTERLY
SWELL. BROAD SURFACE ANTICYCLONIC FLOW COVERS THE ATLANTIC 
WATERS THAT ARE TO THE NORTH OF 20N TO THE WEST OF THE FRONT...
MOVING AROUND A 1027 MB HIGH PRESSURE CENTER THAT IS NEAR 32N63W.
SURFACE ANTICYCLONIC WIND FLOW MOVES AROUND A RIDGE THAT IS TO 
THE EAST OF THE COLD FRONT. THE RIDGE PASSES THROUGH 32N25W TO
28N31W AND 25N41W.
 
FOR ADDITIONAL INFORMATION PLEASE VISIT
HTTP://WWW.HURRICANES.GOV/MARINE

$$
MT