TROPICAL WEATHER DISCUSSION

TROPICAL WEATHER DISCUSSION
NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL
705 AM EST WED NOV 24 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 SIERRA LEONE COAST NEAR 8N13W TO 7N20W 7N26W 8N30W
9N34W 7N39W...AND THEN INDISTINCT AFTER 7N39W. SCATTERED
MODERATE TO STRONG RAINSHOWERS AND THUNDERSTORMS ARE IN
INDIVIDUAL CLUSTERS BETWEEN 20W AND 33W. ISOLATED MODERATE
RAINSHOWERS ARE ELSEWHERE BETWEEN 10W AND 43W...AND FROM 8N
TO 12N BETWEEN 45W AND 49W. A SURFACE TROUGH IS ALONG 59W
TO THE SOUTH OF 12N. SCATTERED MODERATE RAINSHOWERS AND POSSIBLE
THUNDERSTORMS ARE IN THE COASTAL WATERS FROM GUYANA TO TRINIDAD.
ISOLATED MODERATE RAINSHOWERS ARE ELSEWHERE TO THE SOUTH OF 13N
BETWEEN 53W AND 60W. UPPER LEVEL SOUTHWESTERLY WIND FLOW MOVES
FROM THE CARIBBEAN SEA TO THE SOUTH OF 15N60W...21N40W...
BEYOND 26N25W.

...DISCUSSION...

THE GULF OF MEXICO...
BROAD MIDDLE LEVEL TO UPPER LEVEL ANTICYCLONIC WIND FLOW COVERS
THE AREA. SURFACE ANTICYCLONIC WIND FLOW MOVES AROUND A RIDGE
THAT EXTENDS FROM THE NORTHEASTERN CORNER OF THE GULF OF MEXICO
TO THE SOUTHWESTERN CORNER OF THE AREA. RAINSHOWERS ARE POSSIBLE
IN CLUSTERS OF CLOUDS...TO THE SOUTHWEST OF 26N95W 22N90W...
AND TO THE SOUTH OF 26N TO THE EAST OF 90W. EXPECT THE NEXT
COLD FRONT TO REACH THE NORTHWESTERN GULF WATERS BY THURSDAY
NIGHT.

THE CARIBBEAN SEA...
UPPER LEVEL SOUTHWESTERLY WIND FLOW IS TO THE SOUTH OF 14N83W
15N70W BEYOND 16N60W. BROAD LARGE-SCALE SURFACE EASTERLY-TO-
NORTHEASTERLY WIND FLOW IS EVERYWHERE. RAINSHOWERS ARE POSSIBLE
IN SOME CLOUD CLUSTERS THAT ARE TO THE SOUTH OF 17N BETWEEN 60W
AND CENTRAL AMERICA. THESE CLOUD CLUSTERS GENERALLY ARE MOVING
WESTWARD. CLOUDS WITH POSSIBLE RAINSHOWERS ARE MOVING ACROSS THE
DOMINICAN REPUBLIC AT THIS TIME. THEY ARE BEING PUSHED BY THE
SURFACE-TO-MIDDLE LEVEL LEVEL WINDS THAT ARE IN THE ATLANTIC
OCEAN. A SURFACE TROUGH IS TO THE NORTH OF THE WINDWARD PASSAGE
REACHING 25N72W. CLOUDS AND POSSIBLE RAINSHOWERS ARE MOVING
ACROSS THE SOUTHERN BAHAMAS.

THE ATLANTIC OCEAN...
BROAD SURFACE ANTICYCLONIC FLOW COVERS THE AREA TO THE NORTH
OF 20N BETWEEN 50W AND 80W. IT MOVES AROUND A 1020 MB HIGH
PRESSURE CENTER THAT IS NEAR 29N70W. A SURFACE TROUGH BREAKS
INTO THE ANTICYCLONIC FLOW ALONG 31N74W 28N78W TO ANDROS ISLAND
IN THE BAHAMAS. POSSIBLE RAINSHOWERS ARE WITHIN 30 NM TO 60 NM
ON EITHER SIDE OF TROUGH. A REMNANT CLOUD LINE ALSO CUTS INTO
THE RIDGE...ALONG 30N38W 24N47W 24N56W 20N59W. POSSIBLE
RAINSHOWERS ARE WITHIN 60 NM TO 90 NM ON EITHER SIDE OF THE
REMNANT CLOUD LINE. A SURFACE TROUGH EXTENDS FROM A 1007 MB
LOW PRESSURE CENTER THAT IS NEAR 31N30W TO 28N28W 23N33W 20N40W.
RAINSHOWERS AND POSSIBLE THUNDERSTORMS ARE WITHIN 60 NM ON
EITHER SIDE OF THE TROUGH. A DEEP LAYER TROUGH CONTINUES TO
SUPPORT BOTH OF THE SURFACE FEATURES.


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