[Tropical] Tropical Weather Discussion

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AXNT20 KNHC 250544
TWDAT

TROPICAL WEATHER DISCUSSION
NWS NATIONAL HURRICANE CENTER MIAMI FL
105 AM EST TUE JAN 25 2011

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 THE COASTAL BORDER OF LIBERIA AND SIERRA LEONE TO 3N20W...
CROSSING THE EQUATOR ALONG 32W...INTO NORTHEASTERN BRAZIL
NEAR 4S44W. BROKEN UPPER LEVEL CLOUDS ARE WITHIN 600 NM TO
THE SOUTHEAST OF 25N18W 21N26W 13N34W 6N43W 4N48W. SCATTERED
MODERATE RAINSHOWERS TO ISOLATED MODERATE THUNDERSTORMS ARE
TO THE SOUTH OF 6N BETWEEN 18W AND 20W...AND TO THE SOUTH OF
6N BETWEEN 40W AND 50W.

...DISCUSSION...

THE GULF OF MEXICO...
THE MIDDLE LEVEL TO UPPER LEVEL TROUGH THAT WAS IN THE UPPER
MIDWEST OF THE U.S.A. SIXTEEN HOURS AGO HAS SETTLED OVER TEXAS
AND ADJACENT PARTS OF MEXICO. THIS TROUGH SUPPORTS THE COLD FRONT
THAT WAS HUGGING THE TEXAS GULF COAST SIXTEEN HOURS AGO. THE
SITUATION NOW CONSISTS OF A 1009 MB LOW PRESSURE CENTER THAT IS
NEAR 29N94W. A STATIONARY FRONT EXTENDS FROM THE LOW CENTER TO
THE SOUTH CENTRAL LOUISIANA COASTAL WATERS. A COLD FRONT EXTENDS
FROM THE LOW CENTER TO 25N94W AND THE MEXICO GULF COAST NEAR
20N97W. RAINSHOWERS AND POSSIBLE THUNDERSTORMS ARE IN THE WATERS
FROM 26N TO THE COAST BETWEEN 90W AND 94W. BROKEN TO OVERCAST
LOW LEVEL TO MIDDLE LEVEL CLOUDS...WITH SOME AREAS OF SCATTERED
CLOUDS...ARE TO THE EAST OF 88W...EVEN COVERING FLORIDA.

THE CARIBBEAN SEA...
A STATIONARY FRONT PASSES THROUGH 21N67W IN THE ATLANTIC
OCEAN...AND IT CONTINUES TOWARD 20N GRADUALLY ENDING IN
SOUTHEASTERN CUBA...AT A SPOT THAT IS ABOUT 90 NM INLAND FROM
THE SOUTHEASTERNMOST CORNER OF THE ISLAND. RAINSHOWERS ARE
POSSIBLE WITHIN 15 NM ON EITHER SIDE OF 24N60W 22N66W...ACROSS
THE TURKS AND CAICOS ISLANDS...TO THE SOUTHEASTERN COAST OF CUBA
NEAR 21N76W. SCATTERED TO BROKEN LOW LEVEL CLOUDS AND BROKEN
MIDDLE LEVEL CLOUDS COVER THE BAHAMAS...THE FLORIDA STRAITS...
AND CUBA. THE SCATTERED TO BROKEN LOW CLOUDS FROM YESTERDAY THAT
WERE MOVING FROM THE ATLANTIC OCEAN INTO THE CARIBBEAN SEA HAVE
CONTINUED THEIR WESTWARD PROGRESS. THESE CLOUDS AND POSSIBLE
PRECIPITATION ARE TO THE SOUTH OF 20N61W 17N70W 14N76W

THE ATLANTIC OCEAN...
A CENTRAL ATLANTIC OCEAN DEEP LAYER TROUGH SUPPORTS THE COLD
FRONT THAT PASSES THROUGH 32N45W 28N60W TO 25N58W INTO
SOUTHEASTERN CUBA. RAINSHOWERS ARE POSSBILE WITHIN 15 NM ON
EITHER SIDE OF 32N45W TO 24N60W...TRAILING OFF TOWARD
SOUTHEASTERN CUBA. A TROUGH CONNECTS A 29N20W TO A SECOND
CYCLONIC CENTER THAT IS NEAR 15N35W TO 7N45W. BROAD SURFACE
ANTICYCLONIC FLOW COVERS THE ATLANTIC OCEAN TO THE NORTHWEST
OF THE COLD FRONT. A 1008 LOW CENTER IS NEAR 28N90W...ABOUT
400 NM TO THE WEST OF THE CANARY ISLANDS. BROAD ANTICYCLONIC
WIND FLOW COVERS THE REST OF THE AREA THAT IS TO THE EAST
OF THE FRONT.

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

$$
MT





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