[Tropical] Tropical Weather Discussion

[EMWIN Server]

AXNT20 KNHC 241804
TWDAT

TROPICAL WEATHER DISCUSSION
NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL
105 PM EST WED FEB 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 1200 UTC SURFACE ANALYSIS AND SATELLITE IMAGERY
THROUGH 1715 UTC.

...THE ITCZ...
FROM BORDER OF SIERRA LEONE AND LIBERIA ALONG THE COAST TO 3N20W
2N30W 1N40W...CROSSING THE EQUATOR ALONG 47W...INTO NORTHEASTERN
BRAZIL NEAR 1S53W. ISOLATED MODERATE SHOWERS ARE FROM 4N T0 6N
BETWEEN 10W AND 12W...FROM 2N TO 5N BETWEEN 20W AND 24W...AND
FROM THE EQUATOR TO 1N BETWEEN 48W AND 50W.

...DISCUSSION...

WITH THE COLD FRONT THAT EXTENDS FROM THE WESTERN ATLANTIC
OCEAN...ACROSS SOUTH FLORIDA...INTO THE GULF OF MEXICO...
A DEEP LAYER TROUGH THAT PASSES THROUGH MISSISSIPPI AND
SOUTHEASTERN LOUISIANA INTO NORTHEASTERN MEXICO SUPPORTS THAT
PART OF THE ELONGATED FRONTAL BOUNDARY IN THE WESTERN HALF OF
THE GULF OF MEXICO. AN UPPER LEVEL NORTHWEST-TO-SOUTHEAST
ORIENTED TROUGH FROM 31N50W BEYOND 33N69W SUPPORTS A COLD FRONT
THAT PASSES THROUGH 32N63W TO 29N70W TO 28N77W. A STATIONARY
FRONT CONTINUES FROM 28N77W...ACROSS SOUTH FLORIDA JUST TO THE
SOUTH OF LAKE OKEECHOBEE...INTO THE GULF OF MEXICO NEAR
25N85W...TO A 1011 MB LOW PRESSURE CENTER THAT IS NEAR 24N91W.
A COLD FRONT CONTINUES FROM THE LOW CENTER TO THE CENTER OF THE
ISTHMUS OF TEHUANTEPEC. THE FRONT IS STARTING TO BREAK UP OVER
LAND AS THE GALE-FORCE WINDS ARE BLOWING THROUGH THE CHIVELA
PASS INTO THE GULF OF TEHUANTEPEC. GALE-FORCE WINDS COVER THE
GULF OF MEXICO TO THE SOUTH OF 27N TO THE WEST OF THE FRONT AND
TO THE WEST OF 90W. SEA HEIGHTS IN THIS AREA RANGE FROM 10 FEET
TO 19 FEET. THE COLD FRONT CONTINUES ACROSS MEXICO...MINUS THE
BROKEN-UP PART THAT SPANS THE ISTHMUS OF TEHUANTEPEC FROM 17N97W
TO 20N100W. A STATIONARY FRONT CONTINUES IN MEXICO FROM 20N100W
TO 27N102W. BROKEN TO OVERCAST MULTILAYERED CLOUDS AND POSSIBLE
SHOWERS ARE TO THE EAST OF 30N91W 20N97W.

THE CARIBBEAN SEA...
A FAR-NORTHWESTERN CARIBBEAN SEA SURFACE TROUGH EXTENDS FROM THE
FLORIDA KEYS TO THE WESTERN TIP OF CUBA TO A 1006 MB LOW
PRESSURE CENTER THAT IS NEAR 20N86W...INTO NORTHWESTERN
HONDURAS. SHOWERS AND POSSIBLE THUNDERSTORMS ARE TO THE NORTH OF
18N BETWEEN 83W AND 85W. BROAD UPPER LEVEL ANTICYCLONIC FLOW
COVERS THE AREA.

THE REST OF THE ATLANTIC OCEAN...
A SURFACE TROUGH EXTENDS FROM A 1004 MB LOW PRESSURE CENTER THAT
IS NEAR 32N60W TO 26N60W TO A 1005 MB LOW PRESSURE CENTER THAT
IS NEAR 23N61W. THE TROUGH CONTINUES FROM 23N61W TO 20N65W
20N70W AND ALONG THE COAST OF CUBA TO 22N77W ALONG THE SIDE THAT
FACES THE BAHAMAS. BROKEN TO OVERCAST MULTILAYERED CLOUDS AND
POSSIBLE SHOWERS ARE WITHIN 300 NM TO 360 NM ON EITHER SIDE OF
34N26W 28N43W 22N57W. SURFACE ANTICYCLONIC FLOW IS ALONG A RIDGE
THAT PASSES THROUGH 32N10W TO 22N33W TO 17N45W.

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

$$
MT





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