Tropical Waves

A far eastern Atlantic tropical wave has its axis near 21/22W S of 15N, moving westward at 10-15 kt. Nearby convection is discussed in the MONSOON TROUGH/ITCZ section below.

Another eastern Atlantic tropical wave has its axis near 37W from 02N to 16N, moving westward at about 15 kt. No significant convection is currently occurring with this wave.

A central Atlantic tropical wave has its axis near 54W south of 19N. It is moving westward near 15 kt. No significant convection is currently occurring with this wave.

A central Caribbean tropical wave has its axis near 80/81W south of 18N, moving westward at 10 kt. Most convection with this wave is in the eastern North Pacific waters.

Monsoon Trough Itcz

The monsoon trough enters the Atlantic near 12. 5N17W and continues southwestward to 07N26W. The ITCZ extends from 07N26W to 05N34W. It resumes from 04N38W to 00N49W. Scattered moderate and isolated strong convection is noted from 02N to 08N between 02W and 30W.

Gulf Of America

A persistent broad area of low pressure present is over the southwestern Gulf just offshore Mexico. Scattered moderate and isolated strong convection is noted within 240 nm NE of the low. A 1019 mb high is centered over the NE Gulf. The pressure gradient between these features is supporting fresh to strong winds NE of the low. Light winds are in the vicinity of the high center. Gentle to moderate winds prevail elsewhere. Seas are in the 6-8 ft range over the western Gulf, and 2-4 ft elsewhere.

For the forecast, the pressure gradient between the area of low pressure area and a ridge over the NE Gulf will support fresh to strong SE winds and moderate to rough seas, accompanied by scattered showers and thunderstorms, through Sun night. The Atlantic ridge will build westward into the Gulf Tue through Thu, and in combination with lower pressure over South Texas and northeastern Mexico will promote fresh to strong southerly winds over the western Gulf, and moderate to fresh winds over the eastern Gulf.

Caribbean Sea

Fresh to strong winds, and seas of 7-10 ft, prevail over the central Caribbean. Moderate to fresh winds, and moderate seas, are over the remainder of the Caribbean waters.

For the forecast, a ridge will prevail N of the area through Sun to support a large area of fresh to strong trade winds and moderate to rough seas across the central Caribbean. Expect highest winds and seas off the coast of Colombia. Pulsing winds to fresh to strong speeds are expected in the Gulf of Honduras nightly through Thu. The ridge north of the area will reorganize Sun night through Mon then shift slowly NE through midweek, leading to a slight decrease in wind and seas across the basin.

Atlantic Ocean

High pressure prevails across the discussion waters, anchored by a 1022 mb high centered near 25N58W and another 1026 mb high centered near 31N30W. Light to gentle winds are in the vicinity of the high centers. Gentle to moderate winds are elsewhere N of 20N. Moderate to fresh winds prevail S of 20N. Seas are in the 5-7 ft range S of 20N, and 3-5 ft N of 20N.

For the forecast west of 55W, high pressure over the area will generally remain in place through Sun. The ridge will reorganize Sun night and Mon, then shift slowly NE Tue through Wed. This pattern will support moderate E to SE trade winds S of 22N and a gentle anticyclonic flow elsewhere through Sun. Fresh SW winds will briefly develop across the NW waters N of 29N and W of 74W late Sun into Sun night, as a weak frontal system moves through the SE U. S. Expect fresh to strong winds each afternoon through late evening across Atlantic waters near Puerto Rico and Hispaniola.

Posted about 2 hours ago by NHC Forecaster AL