[Tropical] Tropical Weather Discussion

[EMWIN Server]

AXNT20 KNHC 260534
TWDAT

TROPICAL WEATHER DISCUSSION
NWS NATIONAL HURRICANE CENTER MIAMI FL
105 AM EST WED JAN 26 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 NORTHERN SIERRA LEONE TO 5N20W 3N30W 2N42W...INTO NORTH-
EASTERN BRAZIL NEAR 2S48W. ISOLATED AND DISORGANIZED RAINSHOWERS
ARE TO THE SOUTH OF 6N. UPPER LEVEL SOUTHWESTERLY WIND FLOW
IS TO THE SOUTHEAST OF THE LINE 5N50W 14N30W BEYOND 21N17W.

...DISCUSSION...

THE GULF OF MEXICO...

A TROUGH ON WATER VAPOR SATELLITE IMAGERY PASSES THROUGH
LOUISIANA..INTO THE NORTHWESTERN GULF OF MEXICO WATERS...
TO NORTH CENTRAL MEXICO NEAR 25N104W. THE TROUGH SUPPORTS
THE COLD FRONT THAT EXTENDS FROM A 1006 MB LOW PRESSURE CENTER
THAT IS NEAR 31N87W...TO 26N88W 22N92W TO 19N95W NEAR THE COAST
OF THE ISTHMUS OF TEHUANTEPEC. SCATTERED MODERATE RAINSHOWERS
TO ISOLATED STRONG THUNDERSTORM ARE ASSOCIATED WITH A SQUALL
LINE THAT IS TO THE EAST OF THE ADVANCING COLD FRONT.
THE SQUALL LINE IS ABOUT 300 NM TO THE EAST OF THE FRONT.
RAINSHOWERS COVER THE YUCATAN PENINSULA FROM NORTHERN
GUATEMALA TO THE NORTHEASTERN CORNER OF THE YUCATAN
PENINSULA...AND TO THE SOUTH OF 26N TO THE EAST OF 86W.

THE CARIBBEAN SEA...

BROAD UPPER LEVEL ANTICYCLONIC FLOW COVERS THE AREA.
BROKEN LOW LEVEL CLOUDS AND POSSIBLE RAIN ARE TO THE
SOUTH OF 17N TO EAST OF 83W.

THE ATLANTIC OCEAN...

A CENTRAL ATLANTIC OCEAN DEEP LAYER TROUGH SUPPORTS THE
COLD FRONT THAT PASSES THROUGH 32N41W 27N45W TO 24N54W.
A DISSIPATING STATIONARY FRONT CONTINUES FROM 24N54W TO
21N65W...CURVING TO 22N75W NEAR ACKLINS ISLAND IN THE BAHAMAS.
RAINSHOWERS ARE WITHIN 15 NM TO 30 NM ON EITHER SIDE OF
THE LINE THAT PASSES THROUGH 32N38W 29N42W 25N44W. BROKEN
TO OVERCAST MULTILAYERED CLOUDS AND POSSIBLE RAIN ARE WITHIN
90 NM ON EITHER SIDE OF 26N45W 25N57W 21N70W. BROAD SURFACE
ANTICYCLONIC FLOW COVERS THE ATLANTIC OCEAN TO THE WEST AND
NORTHWEST OF THE FRONTAL BOUNDARY. AN UPPER LEVEL TROUGH
PASSES THROUGH 32N11W 25N30W 15N43W. A 994 MB LOW PRESSURE
CENTER IS NEAR 33N14W. A COLD FRONT EVENTUALLY PASSES THROUGH
32N11W...ALONG THE COAST OF MOROCCO TO 25N15W. A SURFACE
TROUGH IS ABOUT 150 NM TO THE WEST OF THE COLD FRONT. ANY
PRECIPITATION THAT MAY BE ASSOCIATED WITH THIS LOW CENTER
AND TROUGH IS TO THE NORTH OF 30N BETWEEN AFRICA AND 24W.


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

$$
MT




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