000
AXNT20 KNHC 230554
TWDAT 

TROPICAL WEATHER DISCUSSION
NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL  
105 AM EST TUE NOV 23 2010

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 SATELLITE IMAGERY
THROUGH 0515 UTC.

...THE ITCZ...
 
FROM THE COAST OF GUINEA-BISSAU TO 8N20W 5N30W 4N40W 6N48W
INTO NORTHERN FRENCH GUIANA. SCATTERED MODERATE RAINSHOWERS
TO ISOLATED STRONG THUNDERSTORMS ARE TO THE SOUTH OF 8N BETWEEN
10W AND 38W. ISOLATED MODERATE RAINSHOWERS ARE FROM 5N TO 11N
BETWEEN 38W AND 50W. A SURFACE TROUGH IS ALONG 15N57W 9N57W
5N55W IN NORTHEASTERN SURINAME. STRONG RAINSHOWERS AND
THUNDERSTORMS ARE FROM 9N TO 11N BETWEEN 55W AND 56W. ISOLATED
MODERATE RAINSHOWERS ARE ELSEWHERE FROM 8N TO 12N BETWEEN
52W AND 60W.

...DISCUSSION...

THE GULF OF MEXICO...
BROAD MIDDLE LEVEL TO UPPER LEVEL ANTICYCLONIC WIND FLOW COVERS 
THE AREA. UPPER LEVEL SOUTHWESTERLY WIND FLOW COVERS MEXICO.
SURFACE ANTICYCLONIC WIND FLOW MOVES AROUND A RIDGE THAT PASSES 
THROUGH NORTHEASTERN FLORIDA INTO THE NORTH CENTRAL GULF OF 
MEXICO...TO 19N97W IN MEXICO. EXPECT THE NEXT COLD FRONT TO 
REACH THE NORTHWESTERN GULF WATERS BY LATE THURSDAY. 

THE CARIBBEAN SEA...
UPPER LEVEL ZONAL FLOW COVERS THE AREA TO THE NORTH OF 15N/16N.
BROAD UPPER LEVEL ANTICYCLONIC FLOW MOVES FROM NORTHERN SOUTH 
AMERICA AND CENTRAL AMERICA INTO THE CARIBBEAN SEA. SURFACE
EASTERLY WIND FLOW IS EVERYWHERE. A SURFACE TROUGH IS AGAINST
THE COAST OF CENTRAL AMERICA...FROM CENTRAL PANAMA TO THE
HONDURAS/NICARAGUA BORDER. SCATTERED MODERATE RAINSHOWERS TO
ISOLATED STRONG THUNDERSTORMS ARE TO THE SOUTH OF 12N BETWEEN
79W AND NICARAGUA. BROAD SURFACE LOW PRESSURE COVERS NORTHERN
SECTIONS OF SOUTH AMERICA.

THE ATLANTIC OCEAN...
MIDDLE LEVEL TO UPPER LEVEL ANTICYCLONIC FLOW MOVES FROM THE 
GULF OF MEXICO...INTO THE U.S.A. MIDDLE ATLANTIC STATES...
INTO THE ATLANTIC OCEAN TO THE NORTH OF 20N TO THE WEST OF 50W.
THE CENTRAL ATLANTIC OCEAN DEEP LAYER TROUGH THAT WAS TO THE 
NORTH OF THE AREA TWENTY FOUR HOURS AGO PASSES THROUGH 32N45W
TO 21N46W. THE COLD FRONT PASSES THROUGH 32N40W TO 31N42W.
THE FRONT STARTS TO DISSIPATE FROM 31N42W TO 28N50W AND 30N60W.
WIDELY SCATTERED TO SCATTERED MODERATE RAINSHOWERS ARE WITHIN
90 NM ON EITHER SIDE OF 30N28W 26N36W 23N43W 20N50W.
A SEPARATE COLD FRONT IS ABOUT 500 NM TO THE EAST-SOUTHEAST
OF THE ONE IN THE CENTRAL ATLANTIC OCEAN...PASSING THROUGH
32N24W TO 31N26W. THE FRONT BECOMES STATIONARY FROM 31N26W
TO 27N33W TO A 1010 MB LOW PRESSURE CENTER THAT IS NEAR 23N38W.

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

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MT