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
ERA
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