[Tropical] Tropical Weather Discussion

[EMWIN Server]

AXNT20 KNHC 111040
TWDAT

TROPICAL WEATHER DISCUSSION
NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL
805 AM EDT SUN APR 11 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 0600 UTC SURFACE ANALYSIS AND SATELLITE IMAGERY THROUGH
1015 UTC...

...THE ITCZ...
THE ITCZ AXIS IS CENTERED ALONG 4N8W 3N20W 1N30W TO THE NE
BRAZIL COAST NEAR 1N50W. SCATTERED MODERATE TO STRONG CONVECTION
IS ALONG THE COAST OF WEST AFRICA FROM 1N-8N BETWEEN 10W-14W.
SIMILAR CONVECTION IS FROM 2N-4N BETWEEN 16W-22W. SCATTERED
MODERATE CONVECTION IS FROM 1N-3N BETWEEN 24W-27W. SIMILAR
CONVECTION IS ALONG THE COAST OF BRAZIL FROM 1S-EQ BETWEEN
48W-50W.

...DISCUSSION...

GULF OF MEXICO...
AS OF 0900 UTC...A SURFACE TROUGH EXTENDS FROM N FLORIDA TO THE
NE GULF OF MEXICO ALONG 31N80W 25N85W. BROKEN TO OVERCAST
MULTILAYERED CLOUDS ARE OVER FLORIDA AND THE NE GULF E OF 85W.
ISOLATED SHOWERS ARE NOTED ON RADAR OVER S FLORIDA MOVING W WITH
THE SURFACE FLOW. SCATTERED SHOWERS ARE ALSO NOTED ON RADAR OVER
W FLORIDA AND THE E GULF MOVING E WITH THE UPPER LEVEL FLOW.
ELSEWHERE...15-20 KT SE SURFACE FLOW WITH FAIR WEATHER IS OVER
THE NW GULF ALONG THE COAST OF LOUISIANA. MORE SCATTERED SHOWERS
ARE SEEN OVER THE SW GULF S OF BROWNSVILLE TEXAS MOVING E WITH
THE UPPER LEVEL FLOW. TEMPERATURES RANGE FROM THE 50'S OVER
THE N GULF STATES TO THE 70'S OVER S FLORIDA AND S TEXAS. IN THE
UPPER LEVELS...A SHORT WAVE TROUGH IS OVER THE E GULF MOVING
QUICKLY E SUPPORTING THE SURFACE TROUGH. SIGNIFICANT UPPER LEVEL
MOISTURE AND BROKEN TO OVERCAST HIGH CLOUDS ARE OVER THE E GULF
E OF 85W...AND THE W GULF W OF 90W. STRONG SUBSIDENCE IS OVER
THE NORTH CENTRAL GULF. EXPECT...THE SHORT WAVE TROUGH AND
SURFACE TROUGH TO MOVE QUICKLY OVER FLORIDA OVER THE NEXT 6
HOURS FOLLOWED BY ZONAL UPPER LEVEL FLOW ALOFT AND SURFACE HIGH
PRESSURE RETURN FLOW AT THE SURFACE...WITH SHOWERS OVER THE W
GULF.

CARIBBEAN SEA...
A 1009 MB LOW IS CENTERED OVER N COLOMBIA NEAR 9N75W. FRESH TO
STRONG TRADEWINDS ARE OVER THE CARIBBEAN SEA AND CENTRAL AMERICA
WITH STRONGEST WINDS ALONG THE COAST OF COLOMBIA. WIDELY
SCATTERED MODERATE CONVECTION IS INLAND OVER N COLOMBIA AND NW
VENEZUELA FROM 7N-11N BETWEEN 70W-75W. SCATTERED SHOWERS ARE
OVER PANAMA...COSTA RICA...INLAND HONDURAS AND INLAND
NICARAGUA...HISPANIOLA...AND THE WINDWARD ISLANDS S OF 15N E OF
63W. EXPECT...CONTINUED SHOWERS OVER THE SOUTHERN CARIBBEAN S OF
15N OVER THE NEXT 24 HOURS.

ATLANTIC OCEAN...
A 1030 MB HIGH IS CENTERED OFF THE COAST OF NORTH CAROLINA NEAR
36N73W. A COLD FRONT IS OVER THE W ATLANTIC FROM 32N62W TO
28N70W. SCATTERED SHOWERS ARE WITHIN 30 NM OF THE FRONT. A 1031
MB HIGH IS OVER THE CENTRAL ATLANTIC NEAR 38N45W. IN THE
TROPICS... A BAND OF LOW CLOUDS AND SHOWERS ARE E OF THE LESSER
ANTILLES FROM 11N-18N BETWEEN 50W-60W. IN THE UPPER LEVELS...AN
UPPER LEVEL TROUGH IS OVER THE W ATLANTIC W OF 70W. AN UPPER
LEVEL RIDGE IS N OF 20N BETWEEN 60W-70W. AN UPPER LEVEL TROUGH
IS N OF 20N BETWEEN 50W-60W. AN UPPER LEVEL RIDGE IS N OF 20N
BETWEEN 40W-50W. ZONAL FLOW IS OVER THE REMAINDER OF THE AREA.
EXPECT THE W ATLANTIC COLD FRONT TO MOVE E TO 32N58W IN 24 HOURS
WITH SHOWERS.

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

$$
FORMOSA




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