Special Features

Central Atlantic Significant Swell: A cold front will move through Central Atlantic waters early this week, with strong to near gale-force northerly winds behind it. Significant NW swell, with period of 8 to 12 seconds, generated by gales N of the region will accompany these winds and combine with wind-waves to induce very rough seas SE of Bermuda starting tonight, spreading E across waters N of 20N through Wed. Widespread seas of 12 to 16 ft can be expected from 40W to 70W during this period. 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 is now confined entirely inland over Africa. The ITCZ extends from 04N19W to 03N35W to 02N50W. Scattered moderate convection is noted from 00N to 07N between 04W and 28W, and from 00N to 10N between 29W and 44W.

Gulf Of America

A cold front extends from Sarasota, Florida NW to SE Louisiana. On the SW Gulf, a surface trough is generating scattered heavy showers and tstms across the E Mexico offshore waters and in the Bay of Campeche. Surface ridging dominates elsewhere, thus supporting moderate to fresh NE to E winds and slight to moderate seas.

For the forecast, high pressure building across the eastern United States will tighten the pressure gradient across the Florida Straits, bringing an increase in winds today. Fresh winds over those waters will reach strong speeds today into Tue evening. Rough seas will develop with the strong winds.

Caribbean Sea

The pressure gradient between the high pressure N of the region and relatively lower pressure in northern Colombia is allowing for mostly moderate to fresh trade winds across the basin, except for fresh to strong winds off Colombia where seas are rough to 10 ft.

For the forecast, fresh to strong NE to E winds off Colombia will pulse mainly at night through Sat, supporting rough seas in the south-central and portions of the SW Caribbean waters. High pressure will move off the coast of the United States in the wake of a cold front over the SW N Atlantic waters this evening. This will tighten the pressure gradient over the waters in the lee of Cuba, south of Hispaniola, and in the Windward Passage, thus resulting in fresh to strong NE winds over these waters through Thu night. Otherwise, E long period swell over the tropical Atlantic waters will subside this morning. New long-period northerly swell will affect the tropical Atlantic waters Wed and Thu, and then again Fri evening through Sat.

Atlantic Ocean

See Special Features section above for information on significant swell arriving starting tonight that will bring very rough seas to part of the central Atlantic into mid-week.

A cold front extends from 31N70W to Port St Lucie, Florida and is followed by fresh to locally strong N to NE winds and moderate seas. Ahead of the front, a pre-frontal trough from 30N63W to 24N75W is generating scattered showers N of 27N between 60W and 68W. The Azores High of 1026 mb located just S of the Islands extends a ridge across the remainder subtropical Atlantic waters, and supports moderate to fresh NE to E winds E of 40W along with rough seas to 10 ft. Moderate or weaker winds and moderate seas are ongoing elsewhere.

For the forecast W of 55W, the cold front will rapidly progress eastward through midweek. Widespread strong to locally near-gale force NE winds and rough seas are expected in the wake of the front. Very rough seas in excess of 12 ft will be possible east of 75W Tue through midweek. A second cold front is forecast to enter the northern waters by midweek with strong winds and building seas in the wake of the front E of 70W.

Posted about 3 hours ago by NHC Forecaster Ramos