000
AXNT20 KNHC 110530
TWDAT 

TROPICAL WEATHER DISCUSSION
NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL  
205 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 0000 UTC SURFACE ANALYSIS AND SATELLITE IMAGERY THROUGH 
0515 UTC...

...THE ITCZ...
THE ITCZ AXIS IS CENTERED ALONG 5N9W 3N23W EQ35W TO THE NE 
BRAZIL COAST NEAR 1N50W. SCATTERED MODERATE TO STRONG CONVECTION 
IS ALONG THE COAST OF WEST AFRICA FROM 1N-5N BETWEEN 8W-12W. 
WIDELY SCATTERED MODERATE CONVECTION IS FROM 2N-5N BETWEEN 
16W-21W...AND FROM 2S-2N BETWEEN 30W-40W.    

...DISCUSSION...

GULF OF MEXICO...
AS OF 0300 UTC...A SURFACE TROUGH EXTENDS FROM THE YUCATAN 
PENINSULA TO THE FLORIDA PANHANDLE ALONG 18N92W 28N85W. BROKEN 
TO OVERCAST MULTILAYERED CLOUDS ARE OVER THE E GULF OF MEXICO E 
OF 90W. SCATTERED SHOWERS ARE NOTED ON RADAR OVER THE CENTRAL 
FLORIDA KEYS. ELSEWHERE...15-20 KT SE SURFACE FLOW WITH FAIR 
WEATHER IS OVER THE W GULF. TEMPERATURES RANGE FROM THE 50'S 
OVER THE N GULF STATES TO THE 70'S OVER S FLORIDA. 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 90W. 
STRONG SUBSIDENCE IS OVER THE W GULF. EXPECT...THE SHORT WAVE  
TROUGH AND SURFACE TROUGH TO MOVE QUICKLY OVER FLORIDA OVER THE 
NEXT 12 HOURS FOLLOWED BY ZONAL UPPER LEVEL FLOW AND SURFACE 
HIGH PRESSURE RETURN FLOW 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 1029 MB HIGH IS CENTERED OFF THE COAST OF NORTH CAROLINA NEAR 
35N74W. A COLD FRONT IS OVER THE W ATLANTIC FROM 32N64W TO 
27N72W. SCATTERED SHOWERS ARE WITHIN 30 NM OF THE FRONT. A 1032 
MB HIGH IS OVER THE CENTRAL ATLANTIC NEAR 41N45W. 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

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FORMOSA