Special Features

Central Atlantic Significant Swell: A cold front extends from 31N37W southwestward to 22N56W, while another frontal boundary enters the basin just south of Bermuda. Scattered showers and isolated thunderstorms are noted north of 22N and between 40W and 47W. Fresh to strong southerly winds are present north of 27N and between 33W and 39W. Meanwhile, fresh to locally gale-force westerly winds are occurring north of 28N and between 50W and 65W. Large NW swell behind the front is producing 12 to 14 ft seas north of 29N between 45W and 65W. Rough seas extend south to the eastern Caribbean islands and west of 40W. A new pulse of N-NW swell is expected to move into the waters north of 28N late tonight through Sat night to produce another area of rough to very rough seas.

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 10N14W to 06N17W. The ITCZ continues from 06N17W to 01S46W. Scattered moderate convection is is observed south of 08N and east of 42W.

Gulf Of America

High pressure dominates the Gulf waters, supporting moderate or lighter winds and seas of 1-3 ft. Generally dry conditions are found across the basin, except for a few showers off Veracruz.

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 Sun. 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 will be possible in the far west central and southwest Gulf by Mon night.

Caribbean Sea

A broad subtropical ridge is forcing fresh to strong easterly trade winds and moderate to locally rough seas in the south-central Caribbean. Moderate to locally fresh easterly winds and moderate seas are found in the north-central, SW and NW Caribbean. Elsewhere, moderate or lighter winds and moderate seas prevail. A few showers are occurring in the Gulf of Honduras and off Nicaragua.

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.

Atlantic Ocean

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

Outside of the large swell area described in the Special Features section, a broad subtropical ridge dominates the remainder of the tropical Atlantic. Moderate or lighter winds and moderate seas prevail in these waters.

For the forecast west of 55W, a cold front moving into the waters between Bermuda and the Bahamas will move east the area through early Sun. Fresh to strong winds near the front will diminish through tonight, but large N swell following the front will mix with earlier large swell still covering the area east of 65W. Another cold front will move into the waters between northeast Florida and Bermuda by late Sat, and sweep to the east of the area by early Mon, leaving a trailing stationary front to dissipate along 21N. Strong winds and additional large N swell follow this front across waters east of 70W into early next week. A third cold front will move off the northeast Florida coast Mon night, and will reach from Bermuda to Jupiter Inlet, Florida by late Tue, and from 31N60W to central Cuba by late Wed.

Posted 0 minutes ago by NHC Forecaster Delgado