000
AXNT20 KNHC 230602
TWDAT 

TROPICAL WEATHER DISCUSSION
NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL  
105 AM EST THU DEC 23 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 0000 UTC SURFACE ANALYSIS AND SATELLITE IMAGERY
THROUGH 0515 UTC.

...THE ITCZ...

FROM 8N14W TO 3N30W TO 4N46W. STRONG RAINSHOWERS AND 
THUNDERSTORMS ARE WITHIN 120 NM ON EITHER SIDE OF 3N31W 2N46W. 
ISOLATED MODERATE RAINSHOWERS ARE IN THE WATERS THAT ARE TO THE 
NORTH OF 2N TO THE EAST OF 7W...AND WITHIN 120 NM ON EITHER SIDE 
OF 6N11W 4N20W 3N31W...AND FROM 6N TO 10N BETWEEN 44W AND 48W.
A SURFACE TROUGH CURVES FROM 1N47W TO 6N51W TO 12N52W. CLOUDS 
AND POSSIBLE PRECIPITATION ARE WITHIN 60 NM TO 120 NM ON EITHER 
SIDE OF THE TROUGH. STRONG RAINSHOWERS AND THUNDERSTORMS ARE 
WITHIN 30 NM ON EITHER SIDE OF 7N56W TO 6N58W IN GUYANA TO 3N59W 
IN GUYANA.
 
...DISCUSSION...

THE GULF OF MEXICO...

BROAD UPPER LEVEL ANTICYCLONIC FLOW SPANS THE AREA BETWEEN 80W 
ALONG FLORIDA AND 110W IN THE EASTERN PACIFIC OCEAN. A COLD FRONT
PASSES THROUGH SOUTHWESTERN GEORGIA TO THE FLORIDA PANHANDLE...
INTO THE GULF WATERS...TO SOUTHERN LOUISIANA...IN THE TEXAS 
COASTAL PLAINS...ACROSS SOUTH TEXAS...INTO NORTHERN MEXICO...
AND BEYOND THE TEXAS BIG BEND AND THE FAR WEST OF TEXAS.
SURFACE ANTICYCLONIC FLOW MOVES AROUND A 1022 MB HIGH PRESSURE 
CENTER THAT IS NEAR 26N92W. ONE RIDGE EXTENDS FROM THE 1022 MB
HIGH CENTER ACROSS CUBA TOWARD THE EASTERN END OF THE DOMINICAN 
REPUBLIC. A SECOND RIDGE GOES FROM THE 1022 MB HIGH CENTER TO 
CENTRAL HONDURAS.

THE CARIBBEAN SEA...

A SURFACE TROUGH GOES FROM THE ATLANTIC OCEAN NEAR 19N49W TO 
14N59W 14N64W 11N67W. THIS IS THE REMNANT OF THE SYSTEM THAT
HAD THE POSSIBILITY OF BECOMING A TROPICAL CYCLONE ABOUT
48 HOURS AGO. ISOLATED MODERATE RAINSHOWERS TO LOCALLY STRONG 
THUNDERSTORMS ARE WITHIN 60 NM ON EITHER SIDE OF 11N61W 13N65W 
15N69W. SIMILAR PRECIPITATION IS FROM 13N TO 17N BETWEEN 75W
AND 78W...NEAR A 78W SURFACE TROUGH THAT RUNS FROM 10N TO 16N.
IT IS POSSIBLE THAT SOME MOISTURE FROM AN OLD FRONTAL TROUGH
FROM EARLIER IN THE WEEK STILL REMAINS IN THE SOUTH CENTRAL
CARIBBEAN SEA.
  
THE ATLANTIC OCEAN...

BROAD UPPER LEVEL CYCLONIC FLOW SPANS THE ATLANTIC OCEAN TO THE 
WEST OF 30W. A COLD FRONT PASSES THROUGH 32N38W TO 23N48W. THE 
FRONT DISSIPATES FROM 23N48W TO 18N58W. GALE FORCE WINDS ARE TO 
THE NORTH OF 28N BETWEEN 42W AND 59W WITH SEA HEIGHTS RANGING
FROM 18 FEET TO 31 FEET IN NW SWELL. GALE FORCE WIND CONDITIONS 
ARE FORECAST TO DEVELOP DURING THE NEXT 24 HOURS TO THE NORTH OF
27N BETWEEN 49W AND 64W...WITH SEA HEIGHTS RANGING FROM 16 FEET
TO 20 FEET IN NORTHWESTERLY SWELL. STRONG RAINSHOWERS AND 
THUNDERSTORMS ARE WITHIN 30 NM ON EITHER SIDE OF 30N36W BEYOND 
32N33W. ISOLATED MODERATE RAINSHOWERS ARE WITHIN 30 NM TO 60 NM
ON EITHER SIDE OF 30N36W 27N38W 23N41W 20N48W. SCATTERED 
MODERATE RAINSHOWERS TO ISOLATED STRONG THUNDERSTORMS ARE WITHIN
60 NM ON EITHER SIDE OF 18N50W 15N56W 13N59W. A SURFACE RIDGE
EXTENDS FROM A 1017 MB HIGH PRESSURE CENTER THAT IS NEAR 34N21W
28N25W TO 25N31W TO 17N41W.

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

$$

MT