829  
AXNT20 KNHC 201740  
TWDAT  
 
TROPICAL WEATHER DISCUSSION  
NWS NATIONAL HURRICANE CENTER MIAMI FL  
139 PM EDT SAT APR 20 2019  
 
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.  
   
..SPECIAL FEATURES
 
 
   
..ATLANTIC GALE WARNING
 
 
A COLD FRONT EXTENDS FROM 31N76W TO 23N81W. EXPECT WESTERLY GALE-  
FORCE WINDS, AND SEA HEIGHTS RANGING FROM 12 FT TO 14 FT, NORTH  
OF 29N AND WITHIN 90 NM EAST OF THE FRONT. THESE CONDITIONS WILL  
CONTINUE THROUGH 18Z TODAY. PLEASE READ THE ATLANTIC HIGH SEAS  
FORECAST AT THE WEBSITE  
HTTPS://WWW.NHC.NOAA.GOV/TEXT/MIAHSFAT2.SHTML, FOR MORE DETAILS.  
   
..MONSOON TROUGH/ITCZ
 
 
THE MONSOON TROUGH PASSES THROUGH THE COASTAL SECTIONS OF GUINEA  
NEAR 15N17W TO 04N23W. THE ITCZ CONTINUES FROM 04N23W TO 04S38W.  
SCATTERED MODERATE CONVECTION IS NOTED SOUTH OF 02N AND WEST OF  
20W.  
 
GULF OF MEXICO...  
 
THE COLD FRONT EXTENDS ACROSS THE FLORIDA STRAITS WITH SCATTERED  
SHOWERS. SURFACE RIDGING AND FAIR WEATHER PREVAILS ACROSS THE  
REMAINDER OF THE BASIN, ANCHORED BY A 1020 MB HIGH CENTERED NEAR  
25N95W.  
 
HIGH PRESSURE WILL CONTINUE BUILDING ACROSS THE WESTERN GULF IN  
THE WAKE OF THE FRONT. RESIDUAL SEAS OVER THE EASTERN GULF WILL  
SUBSIDE THROUGH TONIGHT. THE HIGH PRESSURE WILL SHIFT EAST  
THROUGH SUNDAY, ALLOWING FRESH SE RETURN FLOW OVER THE WESTERN  
GULF THROUGH EARLY NEXT WEEK.  
 
CARIBBEAN SEA...  
 
A STATIONARY FRONT EXTENDS ACROSS THE WEST CARIBBEAN FROM 22N81W  
TO 16N87W WITH SCATTERED SHOWERS. SURFACE RIDGING PREVAILS ACROSS  
THE REMAINDER OF THE BASIN, ANCHORED BY A 1035 MB HIGH CENTERED  
OVER THE NORTH-CENTRAL ATLANTIC. SCATTEROMETER DATA DEPICTS  
MODERATE TO FRESH NORTHERLY WINDS TO THE WEST OF THE FRONT, WHILE  
MODERATE TO FRESH EASTERLY WINDS PREVAIL OVER THE SOUTH-CENTRAL  
CARIBBEAN MAINLY NORTH OF COLOMBIA.  
 
THE STATIONARY FRONT WILL DISSIPATE SUN. MODERATE TO FRESH TRADE  
WINDS WILL PREVAIL ACROSS THE CARIBBEAN, WITH THE EXCEPTION OF  
STRONG BREEZE NE WINDS N OF COLOMBIA. TRADES WILL SLOWLY DIMINISH  
THROUGH MID-WEEK.  
 
ATLANTIC OCEAN...  
 
REFER TO THE SPECIAL FEATURES SECTION ABOVE FOR DETAILS ABOUT THE  
GALE WARNING CURRENTLY IN EFFECT FOR THE WEST ATLANTIC.  
 
A COLD FRONT EXTENDS ACROSS THE WEST ATLANTIC FROM 31N76W TO  
23N81W. A SQUALL LINE EXTENDS FROM 30N76W TO 25N78W. SCATTERED TO  
NUMEROUS MODERATE CONVECTION PREVAILS WITHIN THESE FEATURES MAINLY  
NORTH OF 24N AND WEST OF 74W. TO THE EAST, ANOTHER COLD FRONT  
EXTENDS OVER THE CENTRAL ATLANTIC FROM 31N36W TO 25N40W TO 22N48W,  
THEN BECOMES STATIONARY TO 24N61W. A SURFACE TROUGH EXTENDS WEST  
OF THE FRONT FROM 31N39W TO 28N47W. SCATTERED SHOWERS PREVAIL  
ALONG THE TROUGH AND FRONT MAINLY NORTH OF 28N BETWEEN 34W-41W,  
AND AT THE END OF THE STATIONARY FRONT BETWEEN 57W-61W. SURFACE  
RIDGING PREVAILS ELSEWHERE.  
 
THE FRONT WILL REACH FROM NEAR 31N71W TO THE SE BAHAMAS SUNDAY  
AFTERNOON WHERE IT WILL STALL AND GRADUALLY DISSIPATE. NE SWELL  
WILL MOVE INTO THE WATERS NORTH OF THE VIRGIN ISLANDS THROUGH  
EARLY NEXT WEEK. THE ENERGY RELATED TO THE FRONT IN THE CENTRAL  
ATLANTIC WILL INDUCE THE FORMATION OF A SURFACE LOW THAT WILL  
DEVELOP BY SUNDAY MORNING.  
 
FOR ADDITIONAL INFORMATION PLEASE VISIT  
HTTP://WWW.HURRICANES.GOV/MARINE  
 

 
 
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