• Atlantic Gale Warning

    From Mike Powell@1:2320/105 to All on Sat Feb 28 09:30:09 2026
    062
    AXNT20 KNHC 281007
    TWDAT

    Tropical Weather Discussion
    NWS National Hurricane Center Miami FL
    1215 UTC Sat Feb 28 2026

    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 31N. The following information is based on satellite
    imagery, weather observations, radar and meteorological analysis.

    Based on 0600 UTC surface analysis and satellite imagery through 0955 UTC.

    ...SPECIAL FEATURES...

    Gale Warning East of 35W: A Gale Warning remains in effect for
    the Canarias and Agadir Marine Zones of Meteo France. The
    forecast calls for NE winds to Force 8 on the Beaufort Wind
    Scale, with severe gusts between the Canary Islands through at
    least 01/0000 UTC. Seas currently range from 9 to 13 ft N of 10N
    and E of 30W based on a recent altimeter pass. Higher seas of 12
    to 15 ft are possible just N of the Canary Islands.

    For more information, please see the latest HIGH SEAS FORECAST
    issued by Meteo-France at website: https://wwmiws.wmo.int/index.php/metareas/affiches/2

    Central and Eastern Atlantic Significant Swell Event: A robust
    high pressure system near the Azores is maintaining fresh to
    near gale-force trade winds across the eastern and central
    Atlantic. Wind waves generated by these winds will continue to
    generate seas of 8 to 13 ft across most of the waters between 20W
    and 60W, with highest seas E of 40W. This event will persist
    through early next week, while drifting SW.

    Please read the latest NWS High Seas Forecast issued by the
    National Hurricane Center at website: https://www.nhc.noaa.gov/text/MIAHSFAT2.shtml
    for more information.

    ...MONSOON TROUGH/ITCZ...

    The monsoon trough enters the Atlantic along the coast of Guinea
    near 11N14W, then extends southwestward to 05N18W. The ITCZ
    continues from 05N18W to the coast of Brazil near 04S38W.
    Scattered moderate convection is observed south of 06N and east of 30W.

    ...GULF OF MEXICO...

    A stationary front extends from the Florida Big Bend region to a
    1013 mb low pres near 27N87W and then to the south Texas coast. A
    few showers and isolated thunderstorms are noted in the SE Gulf
    waters. A weak pressure gradient dominates the Gulf, resulting in
    moderate or weaker winds and slight to moderate seas.

    For the forecast, the storm activity will progress southeastward
    this morning and weaken. The weak front will slowly sink
    southeastward and exit the basin tonight. Later, a strong high
    pressure system will build west-southwestward over the area from
    the N Atlantic beginning on Sun night, with the related gradient
    generally supporting moderate to fresh east to southeast winds
    across the Gulf. Locally strong winds will occur at night off N
    Yucatan Tue and Wed.

    ...CARIBBEAN SEA...

    A strong high pressure system centered over the central Atlantic
    combines with the Colombian low to support fresh to near gale-
    force trade winds over the central Caribbean. Seas are 7 to 10 ft
    with these winds. Moderate to fresh trades and moderate seas
    dominate the eastern Caribbean, while mainly gentle to moderate E
    to SE winds with moderate seas are noted over the NW part of the
    basin. Seas to 8 ft are noted across the Atlantic passages in the
    Lesser Antilles.

    For the forecast, an expansive subtropical ridge over the central
    Atlantic will support fresh to near gale-force easterly trade winds
    and moderate to rough seas across the central and eastern Caribbean
    over the next several days. A tighter pressure gradient will
    initiate gale-force winds off Colombia at night Mon through at least
    late next week and support locally very rough seas. Fresh to strong
    trades expected elsewhere across most of the central and eastern
    portions of the basin. In the meantime, rough seas in mixed swell
    will prevail in the tropical N Atlantic through the forecast period,
    with seas to 12 ft reaching 55W Mon. Elsewhere, little change is
    expected with moderate to fresh trades continuing through the period.

    ...ATLANTIC OCEAN...

    A Gale warning is in effect E of 35W. Please, see the Special
    Features section for more information.

    A nearly stationary front has exited the coast off NE Florida,
    supporting numerous showers and isolated thunderstorms W of 75W
    and N of 27N. Meanwhile, a 1034 mb high pressure system located
    near the Azores extends an extensive ridge across the entire
    Atlantic forecast waters. The tight pressure gradient between the
    ridge and lower pressures in the deep tropics and western Africa
    result in fresh to near gale-force easterly winds and rough to
    very rough seas over much of the central and eastern Atlantic.
    Moderate to fresh easterly winds and rough seas are found north of
    20N and between 50W and 65W. Elsewhere, moderate or weaker winds
    and moderate seas are prevalent.

    For the forecast west of 55W, the aforementioned front is expected
    to move slowly southeastward and weaken across the waters W of
    65W through Sun night before dissipating. Elsewhere, high pressure
    over the central Atlantic continues to maintain control over much
    of the western Atlantic while rough seas prevail over the SE
    waters. Another cold front is expected to enter the northern
    waters early next week and gradually shift southeastward and
    weaken. Fresh to near gale-force easterly winds and rough to very
    rough seas, peaking around 14 ft, are forecast behind the front
    Mon through Tue night north of 27N. High pressure will build by
    the middle of next week resulting in moderate to fresh winds and
    rough seas over much of the basin.

    $$
    Delgado
    --- SBBSecho 3.28-Linux
    * Origin: Capitol City Online (1:2320/105)