[Tropical] Tropical Weather Discussion

[EMWIN Server]

AXNT20 KNHC 230602
TWDAT

TROPICAL WEATHER DISCUSSION
NWS NATIONAL HURRICANE CENTER MIAMI FL
205 AM EDT MON MAY 23 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 LIBERIA NEAR 6N10W TO 4N15W TO 1N40W...INTO EXTREME
NORTHEASTERN BRAZIL AND SOUTHERN FRENCH GUIANA NEAR 3N54W.
NUMEROUS STRONG RAINSHOWERS AND THUNDERSTORMS ARE FROM 5N TO 9N
BETWEEN 11W AND 14W IN THE WATERS AND IN PARTS OF SIERRA LEONE.
SCATTERED MODERATE TO STRONG RAINSHOWERS AND THUNDERSTORMS ARE
FROM THE EQUATOR TO 4N BETWEEN 47W AND 51W NEAR BRAZIL...AND
FROM 5N TO 7N BETWEEN 45W AND 52W IN THE ATLANTIC OCEAN AND
IN NORTHEASTERN COASTAL FRENCH GUIANA. A SURFACE TROUGH IS
ALONG 55W/56W FROM 8N TO 16N...MOVING THROUGH THE ITCZ.

...DISCUSSION...

FROM THE GULF OF MEXICO INTO THE WESTERN CARIBBEAN SEA...

AN UPPER LEVEL CYCLONIC CIRCULATION CENTER IS NEAR 21N85W IN THE
YUCATAN CHANNEL. BROAD UPPER LEVEL CYCLONIC FLOW COVERS THE GULF
OF MEXICO TO THE EAST OF 90W AND TO THE SOUTH OF 23N TO THE EAST
OF 93W...AND IN THE CARIBBEAN SEA TO THE WEST OF THE LINE THAT
RUNS FROM SOUTHEASTERN NICARAGUA TO CENTRAL CUBA BEYOND THE
NORTHERN BAHAMAS. SCATTERED MODERATE RAINSHOWERS ARE IN THE
CARIBBEAN SEA FROM 18N TO 23N BETWEEN 77W AND 82W. BROKEN TO
OVERCAST MULTILAYERED CLOUDS STREAM NORTHEASTWARD FROM NICARAGUA
TO JUST TO THE WEST OF JAMAICA...PASSING ON TOP OF MUCH OF CUBA
AND INTO ALMOST ALL OF THE BAHAMAS. UPPER LEVEL ANTICYCLONIC
WIND FLOW COVERS THE GULF OF MEXICO TO THE WEST OF THE LINE THAT
RUNS FROM THE FLORIDA PANHANDLE NEAR 30N86W TO THE ISTHMUS OF
TEHUANTEPEC OF MEXICO. BROAD SURFACE ANTICYCLONIC FLOW MOVES
AROUND A 1018 MB HIGH PRESSURE CENTER THAT IS NEAR 28N86W.
A SURFACE RIDGE IS IN THE NORTHERN GULF WATERS FROM
THE 1018 MB HIGH CENTER WESTWARD TO THE UPPER TEXAS GULF COAST.

THE REST OF THE CARIBBEAN SEA...

A SURFACE TROUGH IS ALONG 16N76W 12N75W 9N74W. ISOLATED
MODERATE RAINSHOWERS AND POSSIBLE THUNDERSTORMS ARE FROM 6N
TO 15N BETWEEN 72W AND 76W...FROM COLOMBIA INTO THE CARIBBEAN
SEA. CLOUDS AND POSSIBLE PRECIPITATION ARE FROM 14N TO 16N
BETWEEN 62W AND 64W.

THE ATLANTIC OCEAN...

AN UPPER LEVEL TROUGH PASSES THROUGH 33N53W TO A CYCLONIC
CIRCULATION CENTER THAT IS NEAR 26N56W...TO 21N63W. SCATTERED
MODERATE RAINSHOWERS TO ISOLATED STRONG THUNDERSTORMS ARE
TO THE NORTH OF 20N BETWEEN 50W AND 60W...AND IN THE NORTHERN
COASTAL WATERS OF HISPANIOLA BETWEEN 70W AND 72W. HIGH CLOUDS
CLEARLY FOLLOW A PATH IN THE ATMOSPHERE FROM THE WATERS THAT
ARE JUST TO THE NORTH OF HISPANIOLA TOWARD THE EASTERN SIDE OF
THE 33N53W 21N63W TROUGH...CURVING SOUTHWESTWARD TO 20N36W...
AND THEN MOVING TOWARD THE MADEIRA ARCHIPELAGO. A COLD FRONT
PASSES THROUGH 32N58W TO 24N63W. A SURFACE TROUGH IS ALONG
28N54W 24N56W 21N59W. AN UPPER LEVEL CYCLONIC CIRCULATION CENTER
IS NEAR 33N28W. BROAD CYCLONIC FLOW MOVES AROUND THE CENTER AND
IT COVERS THE ATLANTIC OCEAN TO THE NORTH OF 18N BETWEEN 14W AND
44W. NO EASILY-DISCERNIBLE PRECIPITATION IS ASSOCIATED WITH THIS
FEATURE. A SURFACE RIDGE PASSES THROUGH 32N40W TO 26N47W TO
19N54W.

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

$$
MT







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