000
AXNT20 KNHC 262351
TWDAT 

TROPICAL WEATHER DISCUSSION
NWS NATIONAL HURRICANE CENTER MIAMI FL
705 PM EST MON NOV 26 2012

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...WEATHER OBSERVATIONS...RADAR...AND METEOROLOGICAL 
ANALYSIS.

BASED ON 1800 UTC SURFACE ANALYSIS AND SATELLITE IMAGERY THROUGH 
2315 UTC.

...ITCZ/MONSOON TROUGH...

THE MONSOON TROUGH EXTENDS ACROSS WEST AFRICA TO THE COAST OF 
GUINEA AT 10N14W TO 9N18W. THE ITCZ BEGINS AT 9N18W AND 
CONTINUES ALONG 7N25W 9N35W 9N50W TO THE COAST OF GUYANA AT 
8N60W. WIDELY SCATTERED MODERATE CONVECTION IS FROM 6N-11N 
BETWEEN 21W-30W. ISOLATED MODERATE CONVECTION IS FROM 7N-10N 
BETWEEN 26W-30W. 

...DISCUSSION...

GULF OF MEXICO...
A 1024 MB HIGH IS CENTERED OVER S GEORGIA NEAR 31N84W. 5 KT S 
SURFACE WINDS ARE OVER THE NE GULF OF MEXICO WHILE 15 KT S WINDS 
ARE OVER THE NW GULF. RADAR IMAGERY SHOWS SCATTERED SHOWERS 
ALONG THE COAST OF SE LOUISIANA N OF 28N BETWEEN 88W-92W DUE TO 
SURFACE CONFLUENCE AND UPPER LEVEL DIFFLUENCE. MOSTLY FAIR 
WEATHER IS OVER THE REMAINDER OF THE GULF. IN THE UPPER 
LEVELS...AN UPPER LEVEL LOW IS CENTERED OVER N MEXICO NEAR 
27N104W. UPPER LEVEL DIFFLUENCE FROM THIS LOW IS ENHANCING THE 
SHOWERS ALONG THE COAST OF LOUISIANA. EXPECT IN 24 HOURS FOR A 
COLD FRONT TO EXTEND FROM SE LOUISIANA TO S TEXAS WITH SHOWERS 
AND CONVECTION.    

CARIBBEAN SEA...
A SURFACE TROUGH IS OVER THE W CARIBBEAN FROM 18N80W TO 9N79W. 
CLUSTERS OF SCATTERED MODERATE CONVECTION ARE WITHIN 90 NM OF 
THE TROUGH AXIS. SCATTERED SHOWERS ARE ELSEWHERE OVER CENTRAL 
AMERICA FROM PANAMA TO THE YUCATAN PENINSULA...AND CONTINUES TO 
CUBA... JAMAICA...AND HISPANIOLA. IN THE UPPER LEVELS... A LARGE 
UPPER LEVEL HIGH IS CENTERED OVER THE CENTRAL CARIBBEAN NEAR 
14N75W. EXPECT THE SURFACE TROUGH TO MOVE NW TO THE NW CARIBBEAN 
OVER THE NEXT 24 HOURS WITH CONVECTION.     

ATLANTIC OCEAN...
A 1025 MB HIGH IS CENTERED OVER THE W ATLANTIC NEAR 30N73W 
PRODUCING FAIR WEATHER. THE TAIL END OF A COLD FRONT IS OVER THE 
W ATLANTIC FROM 32N52W TO 28N57W. A DISSIPATING COLD FRONT 
CONTINUES TO 25N65W. A STATIONARY FRONT IS OVER THE CENTRAL 
ATLANTIC FROM 32N40W TO 26N45W TO 25N50W. A DISSIPATING 
STATIONARY FRONT CONTINUES TO 21N60W. WIDELY SCATTERED MODERATE 
CONVECTION IS E OF THE FRONT FROM 25N-32N BETWEEN 38W-42W. 
SCATTERED SHOWERS ARE WITHIN 45 NM OF THE REMAINDER OF THE 
FRONT. A 1004 MB LOW IS CENTERED OVER THE CANARY ISLANDS NEAR 
28N15W. A SURFACE TROUGH EXTENDS SW FROM THE LOW TO 24N23W. 
SCATTERED SHOWERS ARE OVER THE CANARY ISLANDS. IN THE UPPER 
LEVELS...ANTICYCLONIC WINDS ARE GOING AROUND THE CARIBBEAN HIGH 
W OF 50W. AN UPPER LEVEL TROUGH IS OVER THE E ATLANTIC N OF 10N 
E OF 50W WITH AXIS ALONG 33W. EXPECT CONVECTION TO PERSIST NEAR 
THE STATIONARY FRONT FOR THE NEXT 24 HOURS.   

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

$$
FORMOSA