[Tropical] Tropical Weather Discussion

[EMWIN Server]

AXNT20 KNHC 042332
TWDAT

TROPICAL WEATHER DISCUSSION
NWS NATIONAL HURRICANE CENTER MIAMI FL
805 PM EDT MON APR 04 2011

TROPICAL WEATHER DISCUSSION FOR NORTH AMERICA...CENTRAL
AMERICA...GULF OF MEXICO...CARIBBEAN SEA...NORTHERN SECTION 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...

THE ITCZ AXIS IS CENTERED ALONG 6N10W 2N30W 3S40W. WIDELY
SCATTERED MODERATE CONVECTION IS S OF LIBERIA AND THE IVORY
COAST FROM 1N-5N BETWEEN 2W-10W. ISOLATED MODERATE CONVECTION IS
OFF THE COAST OF BRAZIL FROM 5S-1N BETWEEN 24W-42W.

...DISCUSSION...

GULF OF MEXICO...
AS OF 2100 UTC...A COLD FRONT IS ALONG THE COAST OF TEXAS FROM
30N93W TO 26N98W. RADAR IMAGERY SHOWS SCATTERED SHOWERS AND
ISOLATED THUNDERSTORMS ALONG THE LOUISIANA COAST N OF 28N
BETWEEN 92W-94W. 25 KT NORTHERLY WINDS ARE N OF THE FRONT WHILE
15-20 KT SE WINDS AND FAIR WEATHER ARE OVER THE REMAINDER OF THE
GULF OF MEXICO. IN THE UPPER LEVELS...AN UPPER LEVEL TROUGH IS
INLAND OVER TEXAS SUPPORTING THE FRONT WHILE ZONAL FLOW WITH
STRONG SUBSIDENCE COVERS THE GULF. EXPECT IN 24 HOURS FOR THE
COLD FRONT TO EXTEND FROM S FLORIDA TO THE YUCATAN PENINSULA
WITH CONVECTION.

CARIBBEAN SEA...
SCATTERED SHOWERS WITH ISOLATED THUNDERSTORMS ARE OVER N
COLOMBIA...PANAMA...COSTA RICA...AND THE SW CARIBBEAN S OF 12N.
SCATTERED SHOWERS ARE OVER PUERTO RICO... HISPANIOLA...AND CUBA.
15-30 KT TRADEWINDS ARE OVER THE ENTIRE CARIBBEAN AND CENTRAL
AMERICA WITH STRONGEST WINDS OVER THE CENTRAL CARIBBEAN BETWEEN
70W-78W. IN THE UPPER LEVELS...AN UPPER LEVEL HIGH IS CENTERED
OVER N VENEZUELA NEAR 11N68W. UPPER LEVEL MOISTURE WITH
SCATTERED HIGH CLOUDS ARE CUBA OVER THE NW AND NORTH CENTRAL
CARIBBEAN. STRONG SUBSIDENCE IS OVER THE REMAINDER OF CARIBBEAN
AND CENTRAL AMERICA N OF 12N. EXPECT THE POSSIBILITY OF MORE
SHOWERS OVER THE W CARIBBEAN W OF 75W OVER THE NEXT 24 HOURS.

ATLANTIC OCEAN...
A 1026 MB HIGH IS CENTERED OVER THE W ATLANTIC NEAR 32N65W
PRODUCING FAIR WEATHER. A COLD FRONT IS OVER THE CENTRAL
ATLANTIC FROM 32N43W TO 26N50W TO 24N57W. SCATTERED SHOWERS ARE
WITHIN 30 NM OF THE FRONT. A 1026 MB HIGH IS OVER THE E ATLANTIC
NEAR 35N20W PRODUCING FAIR WEATHER. A SURFACE RIDGE AXIS EXTENDS
SW FROM THE HIGH TO 25N37W. A 1002 MB LOW IS CENTERED INLAND
OVER W ALGERIA NEAR 29N7W. A TIGHT SURFACE GRADIENT EXISTS
BETWEEN THE E ATLANTIC HIGH AND THIS LOW RESULTING IN 20-25 KT
NE WINDS OVER THE CANARY ISLANDS AND SURROUNDING WATERS. EXPECT
IN 24 HOURS FOR...A COLD FRONT TO BE OVER THE W ATLANTIC FROM
32N77W TO S FLORIDA WITH CONVECTION. ALSO EXPECT THE CENTRAL
ATLANTIC COLD FRONT TO MOVE E TO 32N30W WITH SHOWERS.

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

$$
FORMOSA




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