804
AXNT20 KNHC 081652
TWDAT
TROPICAL WEATHER DISCUSSION
NWS NATIONAL HURRICANE CENTER MIAMI FL
1815 UTC WED APR 8 2026
TROPICAL WEATHER DISCUSSION FOR NORTH AMERICA, CENTRAL AMERICA
GULF OF AMERICA, CARIBBEAN SEA, NORTHERN SECTIONS OF SOUTH
AMERICA, AND ATLANTIC OCEAN TO THE AFRICAN COAST FROM THE
EQUATOR TO 31N. THE FOLLOWING INFORMATION IS BASED ON SATELLITE
IMAGERY, WEATHER OBSERVATIONS, RADAR AND METEOROLOGICAL ANALYSIS.
BASED ON 1200 UTC SURFACE ANALYSIS AND SATELLITE IMAGERY THROUGH
1645 UTC.
..SPECIAL FEATURES
WESTERN ATLANTIC GALE WARNING:
A FRONTAL BOUNDARY, WITH A TWO SURFACE LOWS ALONG IT, IS SLOWLY
MOVING EASTWARD. LOW-LEVEL CONVERGENCE AND LIFT NEAR THE BOUNDARY
AND UPPER-LEVEL DIFFLUENCE IS CAUSING WIDESPREAD SHOWERS AND
THUNDERSTORMS NORTH OF 24N BETWEEN 64W AND 73W. THIS ACTIVITY IS
MAINLY ON THE EAST SIDE OF THE BOUNDARY, WHICH CURRENTLY EXTENDS
FROM A LOW NEAR 32N67W TO ANOTHER LOW NEAR 28N72W TO THE CENTRAL
BAHAMAS. GALE-FORCE NORTHEAST WINDS ARE OCCURRING BEHIND THE
BOUNDARY DUE TO THE TIGHT PRESSURE GRADIENT BETWEEN THE FRONT AND
HIGH PRESSURE OVER THE NORTHEASTERN U.S. VERY ROUGH SEAS HAVE BEEN
GENERATED BY THESE GALES, AND SEAS OF UP TO 18 FT ARE OCCURRING IN
THE WARNING AREA. THE VERY ROUGH SEAS WILL LINGER ACROSS PORTIONS
OF THE WATERS N OF THE BAHAMAS INTO THU NIGHT, WITH ROUGH SEAS IN
N SWELL IMPACTING MUCH OF THE WATERS N OF 25N INTO THE WEEKEND.
EAST ATLANTIC LARGE SWELL: LONG-PERIOD NW TO N SWELL CONTINUES
PROPAGATING SOUTHWARD ACROSS PORTIONS OF THE FAR EASTERN
ATLANTIC, CAUSING MAXIMUM SEAS OF 12 TO 14 FT OVER THE SUBTROPICS
EAST OF ABOUT 40W. ROUGH SEAS COVER A MUCH BROADER AREA N OF 10N
AND E OF 55W. THE SWELL WILL ONLY VERY SLOWLY DECAY, AND SEAS OF
12 FT OR GREATER WILL REACH AS FAR SOUTH AS 15N BY THU. SEAS
SHOULD FALL BELOW 12 FT THU NIGHT, ALTHOUGH ROUGH SEAS WILL LIKELY
PERSIST INTO THE WEEKEND.
PLEASE READ THE LATEST HIGH SEAS FORECAST ISSUED BY THE NATIONAL
HURRICANE CENTER AT WEBSITE:
HTTPS://WWW.NHC.NOAA.GOV/TEXT/MIAHSFAT2.SHTML FOR MORE DETAILS ON
BOTH THE WEST ATLANTIC GALE WARNING AND THE SIGNIFICANT SWELL IN
THE EAST ATLANTIC.
EAST ATLANTIC GALE WARNING: METEO-FRANCE HAS ISSUED A GALE
WARNING FOR THE FORECAST ZONE OF MADEIRA. THE FORECAST CALLS FOR
NW GALES TO 40 KT, WITH SEVERE GUSTS DURING THE NEXT SEVERAL
HOURS. VERY ROUGH SEAS IN NW SWELL ARE ALSO REACHING THE ISLANDS.
FOR MORE DETAILS, REFER TO THE METEO- FRANCE HIGH SEAS FORECAST
LISTED ON THEIR WEBSITE HTTPS://WWMIWS.WMO.INT
..MONSOON TROUGH/ITCZ
THE MONSOON TROUGH ENTERS THE ATLANTIC NEAR 10N14W AND CONTINUES
SW TO 04N20W. THE ITCZ EXTENDS WEST-SOUTHWESTWARD FROM 04N20W TO
00N30W TO 01S45W. SCATTERED MODERATE CONVECTION IS OCCURRING FROM
03S TO THE EQUATOR BETWEEN 30W AND 40W AND FROM 01N TO 05N
BETWEEN 12W AND 18W.
..GULF OF AMERICA
A WEAK AREA OF LOW PRESSURE AND ASSOCIATED TROUGH OVER THE
SOUTHEASTERN GULF AND THE FLORIDA STRAITS IS PRODUCING SCATTERED
SHOWERS AND ISOLATED THUNDERSTORMS. SIMILIAR ACTIVITY IS
OCCURRING ALONG ANOTHER TROUGH OVER THE FAR WESTERN GULF, NEAR THE
COASTS OF MEXICO AND SOUTHERN TEXAS. WINDS AND SEAS ARE HIGHEST
TODAY (UP TO 30 KT AND 10 FT) OVER THE NORTHEAST AND NORTH-
CENTRAL WATERS, WHERE A TIGHT PRESSURE GRADIENT EXISTS BETWEEN
STRONG HIGH PRESSURE OVER THE NORTHEAST U.S. AND THE TROUGHING
OVER THE SOUTHEASTERN GULF. WINDS AND SEAS ARE LIGHTEST OVER THE
SOUTHWESTERN WATERS.
FOR THE FORECAST, THE TROUGH OVER THE SOUTHEASTERN WATERS WILL
DRIFT SLOWLY EASTWARD AND MOVE OUT OF THE BASIN BY THU. HOWEVER,
STRONG TO NEAR GALE-FORCE NE WINDS AND ROUGH SEAS WILL CONTINUE
OVER THE NORTHEAST GULF FOR ANOTHER DAY OR SO. AS HIGH PRESSURE
BUILDS SOUTHWESTWARD INTO THE NORTHERN GULF FRI THROUGH THE
WEEKEND, MODERATE TO FRESH E TO SE WINDS WILL BECOME ESTABLISHED
THROUGH THE BASIN.
..CARIBBEAN SEA
SCATTERED MODERATE CONVECTION HAS BEEN PERSISITING NEAR JAMAICA,
WESTERN HAITI, AND EASTERN CUBA, PRIMARILY ASSOCIATED WITH AN
UPPER-LEVEL JET. THE REMAINDER OF THE REGION IS EXPERIENCEING
GENERALLY FAIR WEATHER SUPPORTED BY DRY AIR IN THE MID- AND
UPPER-LEVELS OF THE ATMOSPHERE. WINDS ARE STRONGEST, UP TO 25 KT, OVER
THE USUAL LOCATION, THE SOUTH-CENTRAL PORTION OF THE AREA OFF THE
COASTS OF COLOMBIA AND VENEZUELA, WHERE THE PRESSURE GRADIENT IS
TIGHT BETWEEN LOW PRESSURE OVER COLOMBIA AND HIGH PRESSURE
NORTHEAST OF THE AREA. THESE WINDS ARE CAUSING ELEVATED SEAS, UP
TO ABOUT 8 FT. WINDS AND SEAS ARE LIGHTEST OVER THE WESTERN
PORTION OF THE AREA.
FOR THE FORECAST, FRESH TO STRONG TRADES WILL PREVAIL OVER THE
CENTRAL AND EASTERN BASIN INTO THU, WITH GENTLE TO MODERATE WINDS
TO THE WEST. STRONG HIGH PRESSURE WILL THEN BUILD SOUTHWARD FROM
THE WESTERN ATLANTIC, WITH A TIGHTENING PRESSURE GRADIENT LEADING
TO INCREASING WINDS, ESPECIALLY IN THE SOUTH-CENTRAL BASIN.
..ATLANTIC OCEAN
A GALE WARNING IS IN EFFECT FOR THE PORTIONS OF THE WESTERN
ATLANTIC. METEO-FRANCE ALSO HAS A GALE WARNING IN EFFECT FOR
PORTIONS OF THE FAR EASTERN ATLANTIC. PLEASE REFER TO THE SPECIAL
FEATURES SECTION ABOVE FOR DETAILS ON THESE HAZARDOUS WEATHER
EVENTS.
THE REMAINDER OF THE BASIN IS DOMNINATED BY STRONG SURFACE HIGH
PRESSURE, WHICH ALONG WITH DRY AIR ALOFT, IS SUPPORTING FAIR
WEATHER ACROSS THE MAJORITY OF THE SUBTROPICAL AND TROPICAL
ATLANTIC. MOST AREAS ARE EXPERIENCING MODERATE TO FRESH WINDS,
BUT A ZONE OF STRONG EASTERLY WINDS EXTEND N OF 20N AND E OF 40W,
WHERE SOME SIGNIFICANT NORTHERLY SWELL IS LEADING TO VERY ROUGH
SEAS. DETAILS ON THE SWELL AND ITS FORECAST PROPAGATION CAN BE
FOUND IN THE SPECIAL FEATURES SECTION ABOVE. MODERATE SEAS
DOMINATE THE REMAINDER OF THE ATLANTIC.
FOR THE FORECAST WEST OF 55W, PLEASE REFER TO THE SPECIAL FEATURES
WESTERN ATLANTIC GALE WARNING SECTION FOR FORECAST DETAILS
RELATED TO THE MARINE CONDITIONS CAUSED BY THE PREVIOUSLY
MENTIONED FRONTAL BOUNDARY.
CANGIALOSI
CLICK HERE TO GO TO PREVIOUS BULLETINS.
Main Text Page