Special Features

Gale Warning E of 35W: Meteo-France has issued a GALE WARNING, from now through 22/0000 UTC, for the Canarias Marine Zone. SW winds to Force 8 are associated with 993 mb low pressure near 30N19W. 12-16 ft seas, locally reaching 17 ft, is analyzed north of 20N and east of 35W. Winds and seas will gradually diminish tonight after the GALE WARNING expires and the area of low pressure weakens. For more information, please see the latest HIGH SEAS FORECAST issued by Meteo-France at website: https://wwmiws.wmo.int/index.php/metareas/affiche/2 for more information.

Monsoon Trough/ITCZ

The monsoon trough axis enters the Atlantic through the coast of Liberia near 06N10W and continues southwestward to 03N16W, where the ITCZ begins and continues to 01N50W. Scattered moderate convection is from 03S to 06N between 35W and 48W. Additional scattered moderate convection is within 120 nm of other segments of the ITCZ and Monsoon Trough.

Gulf Of America

1021 mb high pressure centered in the NE Gulf remains in control of the regional weather conditions. Gentle anticyclonic winds and 1-3 ft seas prevail. Along the coast of NE Mexico and S Texas, winds may reach moderate to locally fresh speeds. The diurnal surface trough is analyzed in the Bay of Campeche.

For the forecast, high pressure over the eastern Gulf will maintain moderate SE winds and slight to moderate seas across the western Gulf into the middle of next week. A trough over the Bay of Campeche in the southwest Gulf will support occasional moderate to fresh winds off the northern and western coasts of the Yucatan Peninsula mainly at night through the middle of next week. This pattern will also support light winds and near calm seas over the eastern Gulf through Wed.

Caribbean Sea

The cold front analyzed from Hispaniola southward to the Colombia offshore waters is showing signs of losing its thermal and moisture gradients. By this evening, it will likely degenerate into a surface trough. Regardless of the character of the boundary, fresh to strong N to NE winds will persist across the western Caribbean Sea west of the front, including south of Hispaniola, within the Windward Passage, and in the lee of Cuba, through Monday. These winds were captured on this morning's satellite scatterometer pass. Seas are analyzed to be 5-7 ft across the western and west- central Caribbean, where the aforementioned winds persist. Elsewhere, in the east-central and eastern Caribbean ahead of the cold front, gentle to moderate E to SE winds and 3-5 ft seas prevail.

For the forecast, the front will dissipate by this evening. Moderate to locally strong NE winds will remain in the western Caribbean, including the lee side of Cuba, the Windward Passage and just south of Hispaniola through Mon as high pressure develops across the northern Bahamas in the wake of the front. As the associated ridge shifts slightly eastward, fresh to strong winds and moderate to rough seas will develop offshore Colombia Mon through Wed.

Atlantic Ocean

Please see the SPECIAL FEATURES section for information on a GALE WARNING EAST OF 35W issued by Meteo-France.

A cold front extends from 1006 mb low pressure centered near 31N64W to central Hispaniola. Moderate to fresh NE to N winds are west of the front. East of the front, strong to near-gale force S to SW winds were detected by satellite scatterometer north of 20N east of the front to 60W. Seas are 7-11 ft north of 22N between 55W and 76W. Scattered moderate convection is north of 23W between 60W and 67W. 1027 mb high pressure centered near 35N44W guides the weather conditions across the central Atlantic, where moderate to locally fresh NE to E winds prevail with a narrow region of 4-7 ft seas between 49W and 55W. East of 49W, seas are 8-11 ft in NE swell generated by the GALE FORCE low pressure centered near the Canary Islands.

For the forecast west of 55W, fresh to strong winds and rough seas on either side of the front, and mainly N of 25N, will continue to affect the offshore waters from west to east through Sun as the front continues to move eastward. This system is forecast to reach from 31N57W to Puerto Rico by Sun morning. Then, the front will move across the SE waters on Mon while dissipating. Looking ahead, a new cold front is forecast to enter the offshore waters of NE Florida Mon night into Tue, followed by fresh to strong NE to E winds and rough seas. These marine conditions are forecast to affect most of the waters N of 27N into the middle of the next week before starting to diminish Wed night as the front lifts N.

Posted 23 minutes ago by NHC Forecaster Mahoney