• TROPDISC: Gale/Swell Warn

    From Mike Powell@618:250/1 to All on Sun Dec 28 09:05:01 2025
    773
    AXNT20 KNHC 280935
    TWDAT

    Tropical Weather Discussion
    NWS National Hurricane Center Miami FL
    1215 UTC Sun Dec 28 2025

    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 0600 UTC surface analysis and satellite imagery through 0900 UTC.

    ...SPECIAL FEATURES...

    Gulf of America Gale Warning: A strong cold front will enter the
    NW Gulf waters early Mon. The front will move quickly
    southeastward, departing the basin Tue night. Fresh to near gale-
    force winds will follow the front, along with rough seas. Gale-
    force N winds and rough to very rough seas will develop off
    Tampico Mon afternoon and night. These winds and seas will reach
    the waters off Veracruz Mon night and persist until Tue night.
    Seas may peak around 18 ft off Veracruz Mon night into Tue.
    Conditions will improve from north to south by midweek.

    Central Atlantic Significant Swell: A couple of cold fronts are
    moving through the north central waters. The first cold front
    extends from 31N40W to 26N54W. The second cold front enters the
    waters near 31N57W to 28N69W to 31N78W. Large swell generated
    from the first cold front is generating very rough seas greater
    than 12 ft over the forecast waters N of 27N between 41W and 55W.
    Another set of large NW swell has entered the waters with the
    second cold front, with very rough seas greater than 12 ft
    covering the waters N of 29N east of 65W, and merging with the
    very rough seas generated from the first front. The combined area
    of very rough seas will shift eastward across the waters N of 24N.
    Seas will peak at around 18 ft near 31N47W by early Tue.

    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 information.

    ...MONSOON TROUGH/ITCZ...

    The monsoon trough enters the Atlantic near 10N15W and continues
    to 06N17W. The ITCZ continues from 06N17W to 03N30W to 07N56W.
    Scattered moderate and isolated strong convection is noted from
    02N to 06N between 11W and 22W. Scattered moderate convection is
    noted within 60 nm either side of the ITCZ between 32W and 56W.

    ...GULF OF AMERICA...

    Please read the Special Features section above on an upcoming
    Gale Warning.

    A surface trough is over the SW Gulf, while the remainder of the
    Gulf is dominated by a 1019 mb high centered over the NE Gulf.
    Light to gentle winds are over the NE Gulf, with moderate to
    locally fresh winds prevailing elsewhere. Seas are in the 1-2 ft
    range over the NE Gulf, and 2-4 ft elsewhere.

    For the forecast, a weak pressure gradient will support gentle to
    moderate E to SE winds and slight to moderate seas across the
    Gulf through late today. The next cold front is expected to enter
    the northwest Gulf early Mon, followed by fresh to strong
    northerly winds and rough seas, except gale conditions are
    expected in the far west central and southwest Gulf by Mon
    afternoon. Winds and seas will diminish across the basin through
    mid week as high pressure builds over the region following the front.

    ...CARIBBEAN SEA...

    Moderate to fresh winds,a and seas of 6-8 ft prevail over the
    south central Caribbean. Moderate to fresh winds, and seas of 4-6
    ft are in the north central Caribbean. Moderate winds, and seas of
    2-4 ft, prevail elsewhere.

    For the forecast, the pressure gradient between strong high
    pressure across the western Atlantic and the Colombian low will
    support fresh to strong winds off Colombia through mid week, with
    moderate to fresh trade winds elsewhere. A cold front will move
    through the Yucatan Channel Tue night, reach from central Cuba to
    Belize by late Wed, and from eastern Cuba to the Gulf of Honduras by late Thu.

    ...ATLANTIC OCEAN...

    See the Special Features section at the beginning for details on
    the ongoing significant swell.

    A pair of cold fronts are moving through the northern waters. The
    first cold front extends from 31N40W to 26N54W. Scattered moderate
    and isolated strong convection, and gentle to moderate winds are
    in the vicinity of this front. The second cold front enters the
    waters near 31N57W to 28N69W to 31N78W. Scattered moderate and
    isolated strong convection is within 60 nm east of the front.
    Fresh to strong winds are within 60 nm east of the front, and
    north of the front. Aside from the very rough seas discussed in
    the Special Features section above, rough seas greater than 8 ft
    cover the waters N of a line from 30N70W to 22N55W to 30N28W.
    Moderate to fresh winds, and seas of 6-8 ft, are found S of 12N
    between 30W and 55W. Elsewhere, moderate or weaker winds, and
    moderate seas prevail.

    For the forecast west of 55W, a cold front over the northern
    waters will move east of the area by early Mon, leaving a trailing
    stationary front to dissipate along 21N. Strong to near- gale
    force winds and rough seas will follow this front. Large N swell
    will also follow this front, mixing with large swell already
    covering the area north of 22N and east of 70W. Another cold front
    will move off the northeast Florida coast Mon night, and will
    reach from Bermuda to Jupiter Inlet, Florida by late Tue, from
    31N60W to central Cuba by late Wed, and from 31N55W to eastern
    Cuba by Thu night.

    $$
    AL
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    * Origin: Capitol City Online (618:250/1)