000
AXNT20 KNHC 221814 CCA
TWDAT 

TROPICAL WEATHER DISCUSSION...COR
NWS NATIONAL HURRICANE CENTER MIAMI FL
105 PM EST WED FEB 22 2012

CORRECTION IN ORDER TO UPDATE THE ATLANTIC OCEAN SECTION

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 1200 UTC SURFACE ANALYSIS AND SATELLITE IMAGERY
THROUGH 1700 UTC.

...THE ITCZ/THE MONSOON TROUGH...

THE MONSOON TROUGH PASSES THROUGH LIBERIA NEAR 7N11W TO 2N17W. 
THE ITCZ CONTINUES FROM 2N17W...CROSSING THE EQUATOR ALONG 
21W...TO 1S30W AND INTO NORTHEASTERN BRAZIL NEAR 3S44W. ISOLATED 
MODERATE RAINSHOWERS TO LOCALLY STRONG THUNDERSTORMS ARE TO THE 
SOUTH OF 6N TO THE EAST OF 46W...AND TO THE SOUTH OF 7N BETWEEN 
46W AND 54W.

...DISCUSSION...

THE GULF OF MEXICO...
UPPER LEVEL ANTICYCLONIC WIND FLOW COVERS THE GULF OF MEXICO. 
THIS FLOW MOVES FROM MEXICO TO THE GULF OF MEXICO...ACROSS 
FLORIDA AND THE BAHAMAS...INTO THE ATLANTIC OCEAN TO 60W.
SCATTERED MODERATE TO ISOLATED STRONG RAINSHOWERS ARE WITHIN
A 30 NM RADIUS OF 29N87W. THE SURFACE PRESSURE GRADIENT IS 
COMPARATIVELY WEAK IN THE GULF OF MEXICO.
 
THE CARIBBEAN SEA...
BROAD UPPER LEVEL ANTICYCLONIC WIND FLOW COVERS THE AREA.
 
THE ATLANTIC OCEAN...
A MIDDLE LEVEL TO UPPER LEVEL TROUGH PASSES THROUGH 32N43W
TO 25N48W AND 18N57W. THE TROUGH SUPPORTS A COLD FRONT THAT
PASSES THROUGH 32N38W TO 26N44W 21N54W. A DISSIPATING COLD
FRONT CONTINUES FROM 21N54W TO 20N62W AND 22N70W. BROAD SURFACE 
ANTICYCLONIC WIND FLOW MOVES AROUND A 1027 MB HIGH PRESSURE 
CENTER THAT IS NEAR 32N59W. THIS FLOW IS TO THE NORTH AND 
NORTHWEST OF THE 32N38W 22N70W FRONT...AND TO THE EAST OF 
A SECOND ATLANTIC OCEAN COLD FRONT THAT PASSES THROUGH 32N77W
TO THE GEORGIA COAST NEAR 31N81W. THIS FRONT IS WHAT REMAINS
OF THE FRONT FROM 24 HOURS AGO THAT PASSED THROUGH LOUISIANA TO 
THE UPPER TEXAS GULF OF MEXICO COAST. THE GULF OF MEXICO PART OF 
THE FRONT WEAKENED AND DISAPPEARED FROM THE SURFACE MAP ANALYSIS
AT 22/0000 UTC. A SURFACE RIDGE PASSES THROUGH 32N24W 26N35W
TO 22N43W. AN UPPER LEVEL TROUGH PASSES THROUGH 32N13W TO 28N17W
20N29W 17N36W.

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

$$
MT