[Tropical] Tropical Weather Discussion

[EMWIN Server]

AXNT20 KNHC 232320
TWDAT

TROPICAL WEATHER DISCUSSION
NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL
805 PM EDT TUE MAR 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 1800 UTC SURFACE ANALYSIS AND SATELLITE IMAGERY THROUGH
2315 UTC...

...ITCZ...

ITCZ AXIS IS CENTERED ALONG 5N08W 2N20W 1N40W 1N50W. A SURFACE
TROUGH FROM THE EQUATOR TO 7N IS ALONG 50W WITH WIDELY SCATTERED
MODERATE CONVECTION FROM 1N-6N BETWEEN 46W-52W. ELSEWHERE...
WIDELY SCATTERED MODERATE CONVECTION IS FROM THE EQUATOR TO 4N
BETWEEN 20W-23W.

...DISCUSSION...

GULF OF MEXICO...
AS OF 2100 UTC...A 1019 MB HIGH IS CENTERED OVER THE NE GULF OF
MEXICO NEAR 28N87W PRODUCING 5-10 ANTICYCLONIC SURFACE WINDS AND
FAIR WEATHER OVER MOST OF THE GULF. THE W GULF W OF 96W IN
CONTRAST STILL HAS 15-20 SW WINDS DUE TO A TIGHTER SURFACE
GRADIENT...AND BROKEN LOW CLOUDS. IN THE UPPER LEVELS...AN UPPER
LEVEL RIDGE IS OVER THE GULF WITH AXIS ALONG 95W. A BAND OF
BROKEN HIGH CLOUD AND UPPER LEVEL MOISTURE IS OVER THE N GULF N
OF 25N W OF 85W. VERY STRONG UPPER LEVEL SUBSIDENCE DOMINATES
FLORIDA AND THE REMAINDER OF THE GULF. EXPECT IN 24 HOURS
FOR...THE SURFACE HIGH TO MOVE TO THE W ATLANTIC NEAR 30N80W AND
PRODUCE SW WINDS AND FAIR WEATHER FOR MOST OF THE GULF EXCEPT
THE TEXAS COAST WHERE SHOWERS ARE POSSIBLE.

CARIBBEAN SEA...
AS OF 2100 UTC...THE TAIL END OF A STATIONARY FRONT EXTENDS FROM
E CUBA TO NE NICARAGUA ALONG 21N75W 17N81W 13N84W. BROKEN
TO OVERCAST LOW CLOUDS AND SCATTERED SHOWERS ARE WITHIN 120 NM W
OF THE FRONT. OVERCAST LOW CLOUDS AND SCATTERED SHOWERS ARE ALSO
OVER THE GULF OF HONDURAS AND BELIZE...AND OVER THE HIGHER
ELEVATIONS OF COSTA RICA AND PANAMA. FRESH TO STRONG TRADEWINDS
DOMINATE THE MAJORITY OF THE EASTERN AND CENTRAL CARIBBEAN WITH
STRONGEST WINDS ALONG THE COAST OF N COLOMBIA. ELSEWHERE...AN
AREA OF BROKEN LOW CLOUDS WITH ISOLATED SHOWERS ARE OVER THE
SOUTHERN COAST OF HISPANIOLA W OF 70W. IN THE UPPER LEVELS...AN
UPPER LEVEL RIDGE IS PRODUCING MOSTLY NW WINDS AND STRONG
SUBSIDENCE IS OVER THE CARIBBEAN SEA AND CENTRAL AMERICA. EXPECT
IN 24 HOURS FOR...THE FRONT TO DISSIPATE.

ATLANTIC OCEAN...
A COLD FRONT IS OVER THE W ATLANTIC FROM 32N65W TO 25N70W TO E
CUBA NEAR 21N75W. WIDELY SCATTERED MODERATE CONVECTION IS FROM
25N TO BEYOND 32N BETWEEN 63W-69W. SCATTERED SHOWERS ARE WITHIN
90 NM OF THE REMAINDER OF THE FRONT. A 1032 MB HIGH IS CENTERED
OVER THE CENTRAL ATLANTIC NEAR 35N44W. A DISSIPATING COLD FRONT
IS OVER THE E ATLANTIC FROM 32N20W TO 26N26W 23N34W. SCATTERED
SHOWERS ARE WITHIN 30 NM OF THE FRONT. IN THE UPPER LEVELS...AN
UPPER LEVEL TROUGH IS OVER THE W ATLANTIC N OF 25N BETWEEN
70W-80W. AN UPPER LEVEL RIDGE IS OVER THE CENTRAL ATLANTIC
BETWEEN 40W-70W. AN UPPER LEVEL TROUGH IS N OF 20N BETWEEN
20W-40W. ZONAL FLOW IS FROM 10N-20N E OF 50W. AN UPPER LEVEL
HIGH IS CENTERED OVER THE TROPICAL E ATLANTIC NEAR 5N25W. EXPECT
IN 24 HOURS FOR...THE W ATLANTIC COLD FRONT TO EXTEND FROM
32N58W TO THE TURKS AND CAICOS ISLANDS WITH CONVECTION. ALSO
EXPECT...THE E ATLANTIC FRONT TO DISSIPATE.

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

$$
FORMOSA





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