000
AXNT20 KNHC 142347
TWDAT 

TROPICAL WEATHER DISCUSSION  
NWS NATIONAL HURRICANE CENTER MIAMI FL 
805 PM EDT SUN APR 14 2013

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...WEATHER OBSERVATIONS...RADAR...AND METEOROLOGICAL 
ANALYSIS.

BASED ON 1800 UTC SURFACE ANALYSIS AND SATELLITE IMAGERY THROUGH 
2315 UTC.

...ITCZ/MONSOON TROUGH... 

THE MONSOON TROUGH EXTENDS ACROSS AFRICA TO THE COAST OF SIERRA 
LEONE NEAR 9N13W TO 6N16W. THE INTERTROPICAL CONVERGENCE ZONE 
AXIS EXTENDS FROM 6N16W TO 0N30W TO THE COAST OF BRAZIL NEAR 
2S45W. ISOLATED MODERATE CONVECTION IS FROM 0N-6N BETWEEN 10W-
22W...AND FROM 7S-1S BETWEEN 22W-28W. 
   
...DISCUSSION...

GULF OF MEXICO...                                               
 
AS OF 2100 UTC...A 1007 MB LOW IS CENTERED S OF MOBILE ALABAMA 
NEAR 30N88W. A WARM FRONT EXTENDS E FROM THE LOW ALONG THE COAST 
OF N FLORIDA TO 29N85W TO E OF ST AUGUSTINE FLORIDA AT 30N80W. 
RADAR IMAGERY SHOWS SHOWERS AND THUNDERSTORMS OVER THE NE GULF 
OF MEXICO AND N FLORIDA N OF 27N E OF 70W. MOST OF THE GULF HAS 
10-15 KT SOUTHERLY WINDS. IN THE UPPER LEVELS...THE BASE OF AN 
UPPER LEVEL TROUGH IS OVER THE NORTH CENTRAL GULF. SW UPPER 
LEVEL FLOW IS OVER THE S GULF. UPPER LEVEL MOISTURE AND BROKEN 
HIGH CLOUD ARE OVER THE NE GULF. STRONG SUBSIDENCE IS ELSEWHERE. 
EXPECT IN 24 HOURS FOR THE SURFACE LOW TO BE OVER THE W ATLANTIC 
NEAR 33N77W WITH CONVECTION. ALSO EXPECT RESIDUAL SCATTERED 
SHOWERS OVER THE NE GULF AND FLORIDA. 
 
CARIBBEAN SEA...                                        

A 1006 MB LOW IS CENTERED OVER N COLOMBIA NEAR 7N73W. SCATTERED 
MODERATE CONVECTION IS INLAND OVER N COLOMBIA AND W VENEZUELA. 
15-20 KT TRADEWINDS ARE OVER THE CARIBBEAN SEA. LIGHTEST WINDS 
ARE BETWEEN JAMAICA AND CUBA. SCATTERED SHOWERS ARE NOTED ALONG 
THE COASTS OF PANAMA...AND COSTA RICA...AS WELL AS OVER THE 
HIGHER ELEVATIONS OF HISPANIOLA AND CUBA. IN THE UPPER LEVELS... 
A RIDGE IS OVER THE CARIBBEAN WITH AXIS ALONG 80W. STRONG 
SUBSIDENCE IS OVER THE CARIBBEAN SUPPRESSING DEEP CONVECTION. 
EXPECT LITTLE CHANGE OVER THE NEXT 24 HOURS. 
 
ATLANTIC OCEAN...                                               

A WARM FRONT HAS ENTERED THE W ATLANTIC AND EXTENDS W OF 30N78W 
TO ST AUGUSTINE FLORIDA. WIDELY SCATTERED MODERATE CONVECTION IS 
WITHIN 90 NM OF THE FRONT. A 1024 MB HIGH IS CENTERED OVER THE 
CENTRAL ATLANTIC NEAR 28N51W. ANOTHER 1023 MB HIGH IS OVER THE E 
ATLANTIC NEAR 33N27W. OF NOTE IN THE UPPER LEVELS...AN UPPER 
LEVEL LOW IS CENTERED OVER THE TROPICAL ATLANTIC NEAR 20N45W. 
UPPER LEVEL DIFFLUENCE AND SCATTERED SHOWERS ARE E OF THE LOW 
FROM 12N-20N BETWEEN 30W-40W. EXPECT IN 24 HOURS FOR CONVECTION 
TO BE NE OF THE BAHAMAS DUE TO A SURFACE LOW AND ASSOCIATED WARM 
FRONT. 
 
FOR ADDITIONAL INFORMATION PLEASE VISIT 
HTTP://WWW.HURRICANES.GOV/MARINE

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FORMOSA