000
AXNT20 KNHC 050556
TWDAT 

TROPICAL WEATHER DISCUSSION
NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL  
105 AM EST WED JAN 05 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...METEOROLOGICAL ANALYSIS...WEATHER OBSERVATIONS...AND 
RADAR.

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

...THE ITCZ...

ITCZ AXIS IS ANALYZED ALONG 7N10W 2N22W 3N40W EQ50W. CLUSTERS OF 
SCATTERED MODERATE/ISOLATED STRONG CONVECTION ARE FROM 1N-6N 
BETWEEN 24W-50W. 

...DISCUSSION...

GULF OF MEXICO...
THE UPPER LEVELS OF THE GULF ARE DOMINATED SW TO W FLOW ALOFT. A 
THE SURFACE RIDGE COVERING THE E GULF IS BEGINNING TO RETREAT 
EASTWARD INTO THE W ATLC ANCHORED BY A 1021 MB HIGH NEAR 
TALLAHASSEE FLORIDA. A WEAK 1013 MB LOW CENTERED NEAR LAREDO 
TEXAS WITH A WARM FRONT EXTENDING NE TO FREEPORT TEXAS BECOMING 
STATIONARY INTO THE GULF ALONG 28N91W TO 28N88W. BROKEN TO 
OVERCAST LOW LEVEL CLOUDS WITH POSSIBLE ISOLATED SHOWERS ARE N 
OF A LINE FROM NAPLES FLORIDA ALONG 27N90W TO TEXAS S OF CORPUS 
CHRISTI LEAVING THE REMAINDER OF THE S GULF UNDER CLEAR SKIES 
AGAIN TONIGHT. 

CARIBBEAN SEA...
THE CARIBBEAN REMAINS RATHER TRANQUIL AGAIN TONIGHT. THE UPPER 
LEVELS OF THE CARIBBEAN ARE DOMINATED BY A BROAD UPPER RIDGE 
ANCHORED OVER SOUTH AMERICA WITH MODERATE/STRONG SUBSIDENCE AND 
DRY STABLE AIR ALOFT. A SURFACE TROUGH EXTENDS FROM 16N68W 
THROUGH THE GULF OF VENEZUELA TO INLAND OVER VENEZUELA TO NEAR 
10N71W. BROKEN/OVERCAST LOW CLOUDS WITH POSSIBLE ISOLATED 
SHOWERS ARE WITHIN 90 NM OF LINE FROM OVER THE VIRGIN/LEEWARD 
ISLANDS NEAR 18N63W TO NEAR 13N72W INCLUDING PUERTO RICO. THE 
EASTERLY SURFACE WINDS ARE BANKING OVERCAST LOW CLOUDS WITH 
ISOLATED SHOWERS INLAND AND WITHIN 90 NM ALONG THE COAST OF 
NICARAGUA TO PANAMA S OF 13N W OF 80W LEAVING THE REMAINDER OF 
THE CARIBBEAN UNDER CLEAR SKIES TONIGHT. 

ATLANTIC OCEAN...
ZONAL WESTERLY FLOW ALOFT DOMINATES THE ATLC TO 30W WITH 
MODERATE/STRONG SUBSIDENCE AND DRY STABLE AIR ALOFT. HIGH 
PRESSURE COVERS THE W ATLC WITH A 1020 MB HIGH NEAR 30N67W AND A 
1019 MB HIGH TO THE SW NEAR 25N73W. A COLD FRONT ENTERS THE 
CENTRAL ATLC NEAR 32N40W EXTENDING ALONG 26N54W TO 26N60W WHERE 
IT DISSIPATES TO 24N65W WITH POSSIBLE ISOLATED SHOWERS WITHIN 60 
NM SE OF THE COLD FRONT. A DISSIPATING COLD FRONT ENTERS THE E 
ATLC NEAR 32N23W EXTENDING ALONG 27N32W TO 23N43W WITH NO 
SIGNIFICANT ASSOCIATED WEATHER. DUE TO THE SUBSIDENCE AND STABLE 
AIR ALOFT...THE ATLC IS UNDER FAIR CONDITIONS TONIGHT. 

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

$$
PAW