000
AXNT20 KNHC 262357
TWDAT 

TROPICAL WEATHER DISCUSSION  
NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL
705 PM EST WED NOV 26 2008

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 
2230 UTC.

...THE ITCZ...
THE ITCZ AXIS IS ANALYZED ALONG 11N14W 9N20W 8N30W 9N40W 11N50W 
AND INTO SOUTH AMERICA NEAR 9N61W. A CLUSTER OF SCATTERED 
MODERATE CONVECTION IS SOUTH OF THE AXIS FROM 6N-7N BETWEEN 
17W-0W. SCATTERED SHOWERS ARE FROM 5N-11N BETWEEN 38W-45W. 

...DISCUSSION...

GULF OF MEXICO...
A DISSIPATING STATIONARY FRONT FROM 26N95W TO 22N92W MARKS A 
LINE OF LOW-LEVEL CLOUDS IN THE WEST GULF...REMNANTS OF THE COLD 
FRONT THAT TRAVERSED THE REGION THIS AFTERNOON. HIGH PRESSURE 
CONTINUES TO BUILD IN BEHIND THE FRONT. AS OF 21Z...A 1021 MB 
SURFACE HIGH IS CENTERED NEAR 29N85W. LIGHT TO MODERATE 
ANTICYCLONIC FLOW AROUND THE HIGH PRESSURE SYSTEM COVER THE 
GULF. EXPECT THE HIGH PRESSURE TO SLOWLY SHIFT EASTWARD OVER THE 
NEXT 48 HOURS.

CARIBBEAN SEA...
A BROAD AREA OF LOW PRESSURE REMAINS SITUATED OVER THE SW 
CARIBBEAN CENTERED ON A 1010 MB SURFACE LOW OVER PANAMA NEAR 
9N78W. LOW LEVEL CONVERGENCE NEAR THIS SURFACE LOW COUPLED WITH 
UPPER LEVEL DIVERGENCE AROUND A BROAD RIDGE ALOFT IS SUPPORTING 
SCATTERED SHOWERS AND ISOLATED THUNDERSTORMS ACROSS THE CENTRAL 
AND SW CARIBBEAN S OF 15N BETWEEN 69W AND THE COAST OF 
NICARAGUA. THE NW CARIBBEAN REMAINS MOSTLY CLOUD FREE UNDER 
STRONG SUBSIDENCE ALOFT. N TO NE WINDS 15-20 KTS BLANKET THE 
CARIBBEAN.

ATLANTIC OCEAN...
A DEEP LAYERED TROUGH ALONG THE EASTERN SEABOARD EXTENDS A COLD 
FRONT INTO THE W ATLC. AS OF 21Z...THE FRONTAL BOUNDARY ENTERS 
THE DISCUSSION AREA NEAR 31N65W AND EXTENDS ALONG 27N68W TO 
25N73W. ISOLATED SHOWERS EXTEND 80 NM AHEAD OF THE FRONT. 
FURTHER EAST...A 1003 MB LOW PRESSURE SYSTEM IS OVER THE CENTRAL 
ATLC NEAR 29N48W. AN OCCLUDED FRONT EXTENDS FROM THE LOW CENTER 
THROUGH 32N45W TO 30N39W. A WARM FRONT EXTENDS FROM THIS POINT 
ALONG 31N33W TO 27N28W. A COLD FRONT EXTENDS FROM THIS TRIPLE 
POINT ALONG 26N37W TO 15N47W WHERE IT CONTINUES INTO THE TROPICS 
AS A SURFACE TROUGH TO 10N53W. NUMEROUS MODERATE/SCATTERED 
STRONG CONVECTION IS EAST OF THE COLD FRONT TO 23W NORTH OF 17N. 
SCATTERED MODERATE CONVECTION IS NORTH OF THE WARM FRONT BETWEEN 
29W-41W SOUTH OF 35N. THE REMAINDER OF THE ATLC EAST OF 37W IS 
UNDER THE INFLUENCE OF A SURFACE RIDGE ANCHORED N OF 
THE AZORES AND EXTENDS A RIDGE WEST OF THE CANARY ISLANDS S TO 
THE CAPE VERDE ISLANDS.

$$
WADDINGTON