[Tropical] Tropical Weather Discussion

[EMWIN Server]

AXNT20 KNHC 250550
TWDAT

TROPICAL WEATHER DISCUSSION
NWS NATIONAL HURRICANE CENTER MIAMI FL
205 AM EDT WED MAY 25 2011

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...WEATHER OBSERVATIONS...RADAR...AND
METEOROLOGICAL ANALYSIS.

BASED ON 0000 UTC SURFACE ANALYSIS AND SATELLITE IMAGERY
THROUGH 0515 UTC.

...THE ITCZ...

FROM COASTAL GUINEA NEAR THE SIERRA LEONE BORDER NEAR 9N13W
TO 4N30W...AND INTO EXTREME NORTHEASTERN BRAZIL NEAR 3N51W.
STRONG RAINSHOWERS AND THUNDERSTORMS IN INDIVIDUAL CLUSTERS
COVER PARTS OF BRAZIL...FRENCH GUIANA...SURINAME...AND GUYANA
FROM THE EQUATOR TO 7N BETWEEN 50W AND 58W. STRONG RAINSHOWERS
AND THUNDERSTORMS ARE FROM 2N TO 3N BETWEEN 5W AND 7W...FROM 5N
TO 11N BETWEEN 11W AND 14W...FROM 2N TO 3N BETWEEN 21W AND 22W...
AND FROM 3N TO 4N BETWEEN 24W AND 26W. ISOLATED TO WIDELY
SCATTERED MODERATE RAINSHOWERS AND LOCALLY STRONG THUNDERSTORMS
ARE ELSEWHERE TO THE SOUTH OF 10N BETWEEN AFRICA AND SOUTH
AMERICA.

...DISCUSSION...

FROM THE GULF OF MEXICO INTO THE WESTERN CARIBBEAN SEA...
AND INTO THE ATLANTIC OCEAN THAT IS TO THE WEST OF 60W...

UPPER LEVEL CYCLONIC FLOW COVERS THE GULF OF MEXICO TO THE EAST
OF 90W...IN THE CARIBBEAN SEA TO THE NORTH OF 15N TO THE WEST OF
THE WINDWARD PASSAGE...AND IN THE ATLANTIC OCEAN TO THE WEST OF
74W. AN UPPER LEVEL CYCLONIC CIRCULATION CENTER IS NEAR 23N78W
IN THE WATERS BETWEEN THE BAHAMAS AND CUBA. ISOLATED MODERATE
RAINSHOWERS ARE IN NORTHERN NICARAGUA AND CENTRAL HONDURAS...
AND IN THE CARIBBEAN SEA WITHIN 60 NM ON EITHER SIDE OF THE
LINE THAT RUNS FROM 14N78W TO 17N76W TO 20N73W IN THE WINDWARD
PASSAGE. AN UPPER LEVEL RIDGE IS ALONG 69W/70W FROM HISPANIOLA
NORTHWARD.

THE REST OF THE CARIBBEAN SEA...

A SURFACE TROUGH IS ALONG 76W FROM 10N TO 16N. ISOLATED
MODERATE RAINSHOWERS AND LOCALLY STRONG THUNDERSTORMS ARE
FROM 9N IN COLOMBIA AND THE VENEZUELA BORDER BETWEEN 72W
AND 77W. BROAD UPPER LEVEL ANTICYCLONIC FLOW COVERS THE
REST OF THE CARIBBEAN SEA...ASSOCIATED WITH THE 69W/70W RIDGE.

THE REST OF THE ATLANTIC OCEAN THAT IS TO THE EAST OF 60W...

AN UPPER LEVEL CYCLONIC CIRCULATION CENTER IS NEAR 28N48W.
BROAD CYCLONIC FLOW COVERS THE AREA THAT IS TO THE NORTH OF 15N
BETWEEN 40W AND 55W. AN UPPER LEVEL RIDGE IS ALONG 69W/70W
FROM HISPANIOLA NORTHWARD. THE ANTICYCLONIC FLOW THAT IS MOVING
AROUND THE RIDGE THAT SPANS THE AREA THAT IS BETWEEN 56W AND
80W. A 1009 MB LOW PRESSURE CENTER IS NEAR 27N54W. A SURFACE
TROUGH CURVES AWAY FROM THE LOW CENTER TO 30N50W 25N45W 20N49W
18N56W. SCATTERED MODERATE TO STRONG RAINSHOWERS AND
THUNDERSTORMS ARE FROM 21N TO 23N BETWEEN 42W AND 46W. ISOLATED
MODERATE RAINSHOWERS COVER THE REST OF THE AREA FROM 20N TO 30N
BETWEEN 40W AND 49W. BROAD UPPER LEVEL CYCLONIC FLOW COVERS THE
AREA TO THE NORTH OF 15N BETWEEN AFRICA AND 40W. ANY DEEP
CONVECTIVE PRECIPITATION THAT ACCOMPANIES THIS FEATURE IS ALONG
AND TO THE NORTH OF 32N. SURFACE ANTICYCLONIC FLOW COVERS THE
AREA TO THE NORTH OF 12N BETWEEN AFRICA AND 45W...MOVING AROUND
A 35W RIDGE THAT EXTENDS FROM 10N BEYOND 32N.

FOR ADDITIONAL INFORMATION PLEASE VISIT
HTTP://WWW.HURRICANES.GOV/MARINE

$$
MT





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