000
AXNT20 KNHC 262339
TWDAT 

TROPICAL WEATHER DISCUSSION                                    
NWS NATIONAL HURRICANE CENTER MIAMI FL                         
805 PM EDT SUN APR 26 2015

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 FROM THE AFRICAN COAST NEAR 7N12W TO 
5N18W. THE INTERTROPICAL CONVERGENCE ZONE AXIS EXTENDS FROM 
5N18W TO 2N30W TO 1N40W TO THE COAST OF SOUTH AMERICA NEAR 
0N50W. WIDELY SCATTERED MODERATE CONVECTION IS FROM 3N-6N 
BETWEEN 18W-23W...FROM 0N-3N BETWEEN 27W-32W...AND FROM 2N-3S 
BETWEEN 46W-50W.  
 
...DISCUSSION...

GULF OF MEXICO...                                           

A 999 MB LOW IS CENTERED OVER CENTRAL TEXAS NEAR 33N101W. A COLD 
FRONT IS FURTHER NW MOVING TOWARDS THE GULF OF MEXICO.  10 KT SE 
SURFACE FLOW IS OVER THE W GULF W OF 90W WHILE 10 KT SW WINDS 
ARE OVER THE E GULF. RADAR IMAGERY SHOWS SCATTERED SHOWERS AND 
ISOLATED THUNDERSTORMS OVER THE N GULF N OF 27N MOVING E.  SMOKE 
AND HAZE IS SEEN HOWEVER OVER THE YUCATAN PENINSULA AND THE 
SOUTHERN GULF S OF 24N BETWEEN 86W-94W. MOSTLY FAIR WEATHER IS 
OVER THE REMAINDER OF THE GULF. IN THE UPPER LEVELS...AN UPPER 
LEVEL RIDGE IS OVER THE GULF WITH AXIS ALONG 90W. EXPECT OVER 
THE NEXT 24 HOURS FOR THE COLD FRONT TO BE OVER THE NW GULF FROM 
HOUSTON TEXAS TO BROWNSVILLE TEXAS WITH CONVECTION. 

CARIBBEAN SEA...                                               

A 1004 MB LOW IS CENTERED OVER N COLOMBIA NEAR 6N72W. 10-25 KT 
TRADEWINDS ARE OVER THE CARIBBEAN SEA WITH STRONGEST WINDS ALONG 
THE COAST OF N COLOMBIA AND WEAKEST WINDS S OF CUBA. SCATTERED 
SHOWERS AND ISOLATED THUNDERSTORMS ARE INLAND OVER NW 
VENEZUELA...AND N COLOMBIA. SCATTERED SHOWERS ARE OVER  
..PANAMA...COSTA RICA...AND HISPANIOLA. THE REMAINDER OF THE 
CARIBBEAN HAS MOSTLY FAIR WEATHER. IN THE UPPER LEVELS...AN 
UPPER LEVEL HIGH IS CENTERED N OF COLOMBIA AT 13N74W. STRONG 
SUBSIDENCE COVERS THE ENTIRE CARIBBEAN SEA. EXPECT LITTLE CHANGE 
OVER THE NEXT 24 HOURS. 

...HISPANIOLA...                                         

CURRENTLY SCATTERED SHOWERS ARE OVER HISPANIOLA DUE TO AFTERNOON 
AND EVENING HEATING. STRONG SUBSIDENCE AND DRY AIR REMAINS ALOFT 
SUPPRESSING CONVECTION. EXPECT SIMILAR WEATHER OVER THE NEXT 24 
HOURS. 

ATLANTIC OCEAN...                                               

A SURFACE TROUGH IS OVER THE W ATLANTIC FROM 31N66W TO 28N69W. 
SCATTERED MODERATE CONVECTION IS NE OF THE TROUGH FROM 30N-33N 
BETWEEN 60W-65W. A 1023 MB HIGH IS OVER THE E ATLANTIC NEAR 
33N26W. A RIDGE AXIS EXTENDS SW FROM THE HIGH TO 20N50W. A 1016 
MB LOW IS EMBEDDED OVER THE E ATLANTIC NEAR 28N25W. OF NOTE IN 
THE UPPER LEVELS...AN UPPER LEVEL RIDGE IS OVER THE W ATLANTIC 
BETWEEN 60W-80W. ZONAL FLOW IS OVER THE CENTRAL ATLANTIC BETWEEN 
45W-60W. AN UPPER LEVEL TROUGH IS OVER THE E ATLANTIC BETWEEN 
30W-45W. AN UPPER LEVEL RIDGE IS OVER THE E ATLANTIC N OF 20N E 
OF 30W. EXPECT IN 24 HOURS FOR A COLD FRONT TO MOVE INTO THE W 
ATLANTIC AND EXTEND FROM 31N73W TO CENTRAL FLORIDA WITH 
CONVECTION.  
 
FOR ADDITIONAL INFORMATION PLEASE VISIT 
HTTP://WWW.HURRICANES.GOV/MARINE

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FORMOSA