000
AXNT20 KNHC 080528
TWDAT 

TROPICAL WEATHER DISCUSSION
NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL
105 AM EST SUN MAR 08 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 GOES-12 SATELLITE 
IMAGERY THROUGH 0345 UTC...AND METEOSAT-9 IMAGERY THROUGH
0500 UTC.

...THE ITCZ...

FROM SOUTHERN COASTAL LIBERIA TO THE EQUATOR ALONG 18W...
TO 2SN30W...TO 2S38W INTO NORTHEASTERN BRAZIL NEAR 3S45W.
DISORGANIZED ISOLATED MODERATE SHOWERS AND POSSIBLE 
THUNDERSTORMS ARE SOUTH OF 5N.

...DISCUSSION...

THE GULF OF MEXICO...
AN UPPER LEVEL RIDGE IS ALONG 80W. ANTICYCLONIC FLOW IS 
EVERYWHERE. BROAD SURFACE ANTICYCLONIC FLOW IS AROUND A RIDGE 
ALONG THE LINE FROM 29N80W IN THE ATLANTIC OCEAN...ACROSS 
FLORIDA...TO THE MIDDLE/UPPER TEXAS GULF COAST. HIGH LEVEL 
MOISTURE IS MOVING ACROSS MEXICO NORTH OF 20N...ON THE EASTERN 
SIDE OF AN EASTERN PACIFIC OCEAN MIDDLE TO UPPER LEVEL TROUGH.

THE CARIBBEAN SEA...
THE SOUTHERNMOST POINT OF THE ATLANTIC OCEAN COLD FRONT REACHES
TRINIDAD...FROM 27N50W SOUTHWESTWARD. A SURFACE RIDGE EXTENDS
FROM AN ATLANTIC OCEAN 1029 MB HIGH PRESSURE CENTER NEAR 29N72W 
TO THE U.S.A. VIRGIN ISLANDS TO GUADELOUPE AND SAINT LUCIA.
A MIDDLE TO UPPER LEVEL ATLANTIC OCEAN TROUGH EXTENDS FROM
26N53W TO 16N58W. UPPER LEVEL SOUTHWESTERLY WIND FLOW MOVES 
ACROSS PANAMA ALONG 80W NORTHEASTWARD ACROSS THE AREA...STAYING 
SOUTH OF 17N52W. BROAD LOW LEVEL CYCLONIC WIND FLOW IS EVIDENT 
IN THE LOW CLOUD FIELD. GALE-FORCE WINDS ARE BLOWING ALONG THE 
COLOMBIA COAST AND IN THE WATERS FROM 10N TO 13N BETWEEN 75W
AND 77W...EXPECT SEA HEIGHTS FROM 12 FT TO 17 FT. THE SURFACE 
PRESSURE GRADIENT HAS TIGHTENED IN THAT AREA UNDER LOW LEVEL
CYCLONIC FLOW.

THE ATLANTIC OCEAN...
THE 26N53W CENTRAL ATLANTIC OCEAN MIDDLE TO UPPER LEVEL CYCLONIC 
CIRCULATION CENTER AND TROUGH FROM 26N53W TO 16N58W SUPPORT THE
1007 MB GALE CENTER NEAR 27N50W. A STATIONARY FRONT GOES FROM
THE LOW CENTER NORTHWARD CURVING BEYOND 32N51W. A COLD FRONT
GOES FROM THE LOW CENTER SOUTHWARD TO 20N50W 15N54W TO TRINIDAD
IN THE SOUTHEASTERN CARIBBEAN SEA. GALE-FORCE WINDS AND SEA 
HEIGHTS RANGING FROM 13 FT TO 19 FT ARE WITHIN 400 NM TO THE 
WEST OF THE FRONT AND GALE CENTER. AN EASTERN ATLANTIC OCEAN 
MIDDLE TO UPPER LEVEL CYCLONIC CIRCULATION CENTER IS NEAR 
26N18W. CYCLONIC FLOW COVERS THE AREA FROM THE CAPE VERDE 
ISLANDS TO 36N BETWEEN 10W AND 30W. THE RIDGE TO THE WEST OF
THE FRONT/TROUGH EXTENDS FROM A 1029 MB HIGH PRESSURE CENTER
NEAR 29N72W INTO THE NORTH CENTRAL GULF OF MEXICO. BROAD LOW
LEVEL ANTICYCLONIC FLOW IS AROUND A RIDGE ALONG 4N30W 24N33W
BEYOND 33N33W. 

$$
MT