000
AXNT20 KNHC 231139
TWDAT 

TROPICAL WEATHER DISCUSSION
NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL  
705 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 0600 UTC SURFACE ANALYSIS AND SATELLITE IMAGERY
THROUGH 1115 UTC.

...THE ITCZ...
 
FROM THE COAST OF GUINEA NEAR 9N13W TO 6N20W 5N30W 4N37W 3N42W.
STRONG RAINSHOWERS AND THUNDERSTORMS ARE FROM 8N TO 9N BETWEEN 
14W AND 15W...FROM 4N TO 6N BETWEEN 14W AND 16W...FROM 6N TO 8N
BETWEEN 23W AND 38W...AND FROM THE EQUATOR TO 3N BETWEEN 20W AND 
33W. ISOLATED MODERATE RAINSHOWERS ARE POSSIBLE ELSEWHERE TO THE 
SOUTH OF 10N TO THE EAST OF 40W...AND FROM 6N TO 12N BETWEEN 40W 
AND 60W. A SURFACE TROUGH IS ALONG 55W/56W FROM 7N TO 13N. STRONG
RAINSHOWERS AND THUNDERSTORMS ARE IN CLUSTERS FROM 9N TO 11N
BETWEEN 55W AND 61W.

...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 NIGHT. 

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. STRONG RAINSHOWERS AND THUNDERSTORMS
ARE MOSTLY IN THE WATERS THAT ARE TO THE SOUTH OF 10N BETWEEN 
COLOMBIA AND PANAMA...AND TO THE SOUTH OF 12N BETWEEN 80W AND 
THE NICARAGUA COAST. 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 32N44W
TO 21N45W. THE COLD FRONT PASSES THROUGH 32N38W TO 31N40W.
THE FRONT STARTS TO DISSIPATE FROM 31N40W TO 27N54W AND 30N63W. 
ISOLATED MODERATE RAINSHOWERS ARE WITHIN 30 NM TO 45 NM ON 
EITHER SIDE OF THE LINE THAT PASSES THROUGH 32N37W 28N43W 26N47W 
24N55W 30N64W. A SEPARATE COLD FRONT IS ABOUT 350 NM TO 500 NM 
TO THE EAST-SOUTHEAST OF THE ONE IN THE CENTRAL ATLANTIC 
OCEAN...ENDING AT 31N25W. THE FRONT BECOMES STATIONARY FROM 
31N25W TO 27N32W TO A 1008 MB LOW PRESSURE CENTER THAT IS NEAR 
24N37W. A SURFACE TROUGH CONTINUES FROM THE LOW PRESSURE CENTER 
TO 20N39W. A REMNANT CLOUD LINE IS ALONG 26N37W 22N46W 19N56W. 
WIDELY SCATTERED TO SCATTERED MODERATE RAINSHOWERS ARE WITHIN
60 NM TO 120 NM ON EITHER SIDE OF 32N24W 26N32W 20N45W. 

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

$$
MT