000
AXNT20 KNHC 081738
TWDAT 

TROPICAL WEATHER DISCUSSION
NWS NATIONAL HURRICANE CENTER MIAMI FL
205 PM EDT SUN APR 8 2012

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 1200 UTC SURFACE ANALYSIS AND SATELLITE IMAGERY THROUGH
1715 UTC.

...ITCZ/MONSOON TROUGH...

THE MONSOON TROUGH EXTENDS ACROSS AFRICA TO THE COAST OF SIERRA 
LEONE NEAR 8N12W AND CONTINUES TO 2N18W. THE ITCZ EXTENDS FROM 
2N18W TO 2N30W TO THE COAST OF BRAZIL AT EQ48W. SCATTERED 
MODERATE TO ISOLATED STRONG CONVECTION IS FROM 2N-6N BETWEEN 
10W-20W. SCATTERED MODERATE CONVECTION IS FROM 1N-3N BETWEEN 
44W-52W.  

...DISCUSSION...

GULF OF MEXICO...
A 1024 MB HIGH IS CENTERED OVER S GEORGIA NEAR 32N83W PRODUCING 
10-15 KT EASTERLY FLOW OVER THE GULF OF MEXICO. A SURFACE TROUGH 
IS OVER THE E GULF ALONG 28N86W 25N86W 24N85W MOVING W AT 
5-10 KT. A THIN LINE OF SCATTERED SHOWERS ARE NOTED ON SATELLITE 
IMAGERY ALONG THE TROUGH AXIS. ANOTHER SURFACE TROUGH IS OVER 
THE EASTERN BAY OF CAMPECHE AND S MEXICO ALONG 21N91W 16N93W. 
ISOLATED MODERATE CONVECTION IS W OF THE TROUGH AXIS FROM 
17N-20N BETWEEN 94W-97W. SCATTERED MODERATE CONVECTION IS NEAR 
TAMPICO MEXICO FROM 20N-23N BETWEEN 96W-98W. AN AREA OF 
SCATTERED SHOWERS ARE FURTHER N ALONG THE COAST OF S TEXAS AND 
NE MEXICO FROM 23N-27N BETWEEN 93W-98W. IN THE UPPER LEVELS...NW 
UPPER LEVEL FLOW WITH MOSTLY SUBSIDENCE IS NOTED. EXPECT A WEAK 
FRONTAL BOUNDARY TO BE OVER THE NORTHERN GULF STATES IN 24 HOURS 
TO BE FOLLOWED WITH A 1021 MB HIGH OVER S TEXAS.       

CARIBBEAN SEA...
THE TAIL END OF A STATIONARY FRONT EXTENDS FROM N HISPANIOLA TO 
E CUBA ALONG 21N70W 19N77W. SCATTERED SHOWERS ARE WITHIN 60 NM 
OF THE FRONT. A RELATIVELY LAX SURFACE PRESSURE AREA IS OVER THE 
CARIBBEAN PRODUCING 10-15 KT TRADEWINDS WITH STRONGEST WINDS 
ALONG THE COAST OF N COLOMBIA. IN THE UPPER LEVELS ZONAL FLOW 
PREVAILS. A BAND OF UPPER LEVEL MOISTURE EXTENDS FROM THE 
EASTERN PACIFIC TO S OF HONDURAS TO THE LEEWARD ISLANDS. 
EXPECT...ADDITIONAL SHOWERS OVER THE LEEWARD ISLANDS OVER THE 
NEXT 24 HOURS.    

ATLANTIC OCEAN...
A COLD FRONT EXTENDS FROM 30N57W TO N HISPANIOLA ALONG 23N63W 
21N70W. ISOLATED MODERATE CONVECTION IS E OF THE FRONT FROM 
26N-32N BETWEEN 55W-58W. SCATTERED SHOWERS ARE WITHIN 60 NM OF 
THE REMAINDER OF THE FRONT. A 1032 MB HIGH IS CENTERED NEAR 
42N33W WITH A SURFACE RIDGE AXIS TO 25N50W PRODUCING FAIR 
WEATHER. A 1013 MB LOW IS CENTERED OVER THE E ATLANTIC NEAR 
36N19W. A SURFACE TROUGH EXTENDS S FROM THE LOW TO THE CANARY 
ISLANDS NEAR 27N16W WITH A BAND OF SHOWERS. IN THE UPPER 
LEVELS... THE BASE OF AN UPPER LEVEL TROUGH IS OVER THE W 
ATLANTIC N OF 25N BETWEEN 60W-80W SUPPORTING THE SURFACE FRONT. 
AN UPPER LEVEL LOW IS CENTERED OVER THE E ATLANTIC NEAR 25N17W 
SUPPORTING THE E ATLANTIC SURFACE FEATURE. EXPECT...THE FRONT TO 
BECOME STATIONARY OVER THE NEXT 24 HOURS WITH CONVECTION.    

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

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FORMOSA