[Tropical] Tropical Weather Discussion

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AXNT20 KNHC 110605
TWDAT

TROPICAL WEATHER DISCUSSION
NWS NATIONAL HURRICANE CENTER MIAMI FL
105 AM EST FRI MAR 11 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 0515 UTC.

...THE ITCZ...

FROM THE LIBERIA COAST NEAR 6N10W TO 6N16W TO 1N25W...CROSSING
THE EQUATOR ALONG 35W...INTO BRAZIL NEAR 2S47W. WIDELY
SCATTERED TO SCATTERED MODERATE RAINSHOWERS TO ISOLATED
STRONG  THUNDERSTORMS ARE FROM 05S TO 4N BETWEEN 13W AND 53W.

...DISCUSSION...

FROM THE ATLANTIC OCEAN THAT IS TO THE WEST OF 70W
INTO THE GULF OF MEXICO AND THE NORTHWESTERN CARIBBEAN SEA...
MIDDLE LEVEL TO UPPER LEVEL CYCLONIC FLOW COVERS THE U.S.A.
TO THE EAST OF 100W...AND THE GULF OF MEXICO. THE CYCLONIC
FLOW ACCOMPANIES A TROUGH THAT SUPPORTS A COLD FRONT THAT
PASSES THROUGH 32N77W IN THE ATLANTIC OCEAN...ON TOP OF LAKE
OKEECHOBEE IN FLORIDA...TO THE NORTHERN YUCATAN PENINSULA...
TO WESTERN GUATEMALA. A SURFACE RIDGE PASSES THROUGH EAST
TEXAS...THE BORDER OF THE DEEP SOUTH OF TEXAS AND EXTREME
NORTHEASTERN MEXICO...INTO THE SOUTHWESTERN CORNER OF THE
GULF OF MEXICO. POSSIBLE RAINSHOWERS ARE TO THE NORTH OF 27N
BETWEEN 75W AND 78W IN THE ATLANTIC OCEAN. RAINSHOWERS ARE
POSSIBLE FROM GUATEMALA TO 20N BETWEEN 85W AND 93W. ANOTHER
LINE OF SHOWERS HAD BEEN MOVING SOUTHWARD...FROM 18N TO 20N
BETWEEN 78W AND 85W. THAT PRECIPITATION APPEARS TO HAVE
WEAKENED AND DISSIPATED WITH TIME.

THE REST OF THE CARIBBEAN SEA...
BROKEN LOW LEVEL TO MIDDLE LEVEL CLOUDS AND POSSIBLE RAINSHOWERS
ARE FROM 12N TO 18N BETWEEN 73W AND 84W. RAINSHOWERS ARE
POSSIBLE TO THE EAST OF 70W...IN CLUSTERS OF BROKEN LOW TO
MIDDLE LEVEL CLOUDS THAT ARE MOVING SOUTHWESTWARD FROM THE
ATLANTIC OCEAN.

THE REST OF THE ATLANTIC OCEAN TO THE EAST OF 70W...
A CYCLONIC CIRCULATION CENTER IS NEAR 27N49W IN WATER VAPOR
IMAGERY. BROAD CYCLONIC FLOW COVERS THE ATLANTIC OCEAN TO THE
NORTH OF 16N BETWEEN 40W AND 65W. A DISSIPATING STATIONARY FRONT
EXTENDS FROM A 1015 MB LOW PRESSURE CENTER THAT IS NEAR 31N56W
TO 30N50W TO 25N45W. ONE SURFACE TROUGH IS ALONG 24N46W 20N50W
18N59W. BROKEN LOW LEVEL CLOUDS AND POSSIBLE PRECIPITATION ARE
WITHIN 30 NM TO 60 NM ON EITHER SIDE OF 18N60W 19N50W 24N44W.
A SECOND SURFACE TROUGH IS ALONG 22N42W 18N46W. BROAD CYCLONIC
FLOW IN WATER VAPOR IMAGERY COVERS THE AREA THAT IS TO THE NORTH
OF 24N TO THE EAST OF 30W. A 1006 MB LOW PRESSURE CENTER IS NEAR
33N18W. ISOLATED MODERATE RAINSHOWERS ARE TO THE NORTH OF 27N
BETWEEN 15W AND 24W INCLUDING ACROSS THE CANARY ISLANDS. BROKEN
LOW LEVEL CLOUDS AND POSSIBLE PRECIPITATION ARE WITHIN 60 NM ON
EITHER SIDE OF 21N41W 15N47W. BROKEN LOW CLOUDS AND POSSIBLE
PRECIPITATION ARE FROM 17N TO 25N BETWEEN 20W AND 40W.

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

$$
MT



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