000
AXNT20 KNHC 092352
TWDAT 

TROPICAL WEATHER DISCUSSION
NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL  
705 PM EST SUN JAN 09 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 1800 UTC SURFACE ANALYSIS AND SATELLITE IMAGERY THROUGH
2315 UTC.

...ITCZ...

THE ITCZ AXIS IS ANALYZED FROM 05N09W TO 04N20W TO EQ50W. 
ISOLATED MODERATE CONVECTION IS FROM 5S-3N BETWEEN 28W-40W.

...DISCUSSION...

GULF OF MEXICO...
AS OF 2100 UTC...A 1004 MB LOW IS OVER THE NW GULF OF MEXICO 
NEAR 28N98W. A COLD FRONT EXTENDS S FROM THE LOW CENTER TO 
TAMPICO MEXICO. A WARM FRONT EXTENDS E FROM THE LOW TO THE 
FLORIDA KEYS. SCATTERED MODERATE CONVECTION IS E OF THE LOW 
CENTER FROM 27N-32N BETWEEN 86W-90W. GALE FORCE WINDS ARE N OF 
26N E OF THE COLD FRONT TO 85W. TEMPERATURES FROM E TEXAS TO THE 
FLORIDA PANHANDLE ARE IN THE 40'S WHILE TEMPERATURE IN THE WARM 
AIR MASS OVER W CUBA ARE IN THE 70'S. THE LOW AND COLD FRONT ARE 
MOVING E WHILE THE WARM FRONT IS MOVING N. EXPECT THE LOW TO BE 
OVER THE FLORIDA PANHANDLE IN 24 HOURS WITH THE COLD FRONT 
EXTENDING S TO THE YUCATAN PENINSULA WITH SHOWERS.     

CARIBBEAN SEA...
AS OF 2100 UTC...A 1004 MB LOW IS CENTERED OVER N COLOMBIA NEAR 
8N73W. A SURFACE TROUGH EXTENDS N TO THE CENTRAL CARIBBEAN S OF 
HISPANIOLA. WIDELY SCATTERED MODERATE SHOWERS ARE OVER N 
COLOMBIA...PANAMA ...AND COSTA RICA. 15-25 KT TRADEWINDS ARE 
OVER THE CARIBBEAN WITH STRONGEST WINDS ALONG THE COAST OF N 
COLOMBIA. IN THE UPPER LEVELS...AN UPPER LEVEL RIDGE IS 
PRODUCING SW TO W UPPER LEVEL FLOW. SCATTERED UPPER LEVEL CLOUDS 
COVERS MOST OF THE AREA S OF 20N E OF 85W. EXPECT MORE SHOWERS 
OVER THE SW CARIBBEAN OVER THE NEXT 24 HOURS.    

ATLANTIC OCEAN...
AS OF 2100 UTC...A COLD FRONT IS OVER THE W ATLANTIC FROM 31N63W 
TO THE STRAITS OF FLORIDA NEAR 24N80W. SCATTERED SHOWERS ARE 
WITHIN 30 NM OF THE FRONT N OF 28N. FURTHER E...AN AREA OF 
SHOWERS ARE N OF 27N BETWEEN 50W-60W DUE TO RESIDUAL MOISTURE 
FROM AN OLD QUASI-STATIONARY FRONT. A 1029 MB HIGH IS CENTERED 
OVER THE E ATLANTIC NEAR 31N31W PRODUCING FAIR WEATHER. IN THE 
UPPER LEVELS A BROAD UPPER LEVEL RIDGE IS W OF 40W. AN UPPER 
LEVEL TROUGH IS E OF 40W. EXPECT THE COLD FRONT OVER THE W 
ATLANTIC TO MOVE E TO 30N50W OVER THE NEXT 24 HOURS WITH 
SHOWERS. 

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

$$
FORMOSA