National Weather Service Marine Forecast FZNT25 KNHC

FZNT25 KNHC 210830
OFFN04

NAVTEX Marine Forecast
NWS National Hurricane Center Miami, FL
430 AM EDT Tue Jul 21 2026

Please refer to Coastal Waters Forecasts (CWF) available through NOAA Weather Radio and other means for detailed Coastal Waters Forecasts

Southeast Gulf of America

SYNOPSIS
As of 2 AM EDT, Tropical Storm Bertha is located over the NE Gulf about 110 nm south of Panama City, Florida moving slowly toward the northwest. On the forecast track, Bertha will move near or along the northern Gulf coast during the next several days. Otherwise, high pressure over the western Gulf will become less evident by midweek. After midweek, Atlantic high pressure will extend westward to the central Gulf.

TODAY
S winds 10 kt S of 24N, and S to SW 15 to 20 kt N of 24N. Seas 3 to 5 ft. Isolated showers and thunderstorms.

TONIGHT
S to SW winds 10 to 15 kt, shifting to SE late. Seas 3 to 5 ft. Isolated showers and thunderstorms.

WED
SE winds 10 kt. Seas 3 to 5 ft. Isolated showers and thunderstorms.

WED NIGHT
S of 24N, NE to E winds 10 to 15 kt. N of 24N, variable winds less than 5 kt, becoming E to SE 10 kt late. Seas 3 to 5 ft.

THU
E winds 10 to 15 kt. Seas 3 to 5 ft.

THU NIGHT
NE to E winds 10 to 15 kt. Seas 3 to 5 ft.

FRI
E winds 10 kt. Seas 3 to 4 ft.

FRI NIGHT
E winds 10 kt. Seas 3 to 4 ft.

SAT
S of 24N, E to SE winds 10 kt. N of 24N, SE winds 10 kt in the morning, becoming variable less than 5 kt. Seas 2 to 4 ft.

SAT NIGHT
E to SE winds 10 kt S of 24N, and variable less than 5 kt N of 24N. Seas 3 to 4 ft.

Within 200 nm east of the coast of Florida

SYNOPSIS
A surface trough that is over the central Atlantic from 27N57W to 22N59W to 16N61W will move westward reaching near 70W by Wed afternoon and to near 75W by Thu morning. Moderate to fresh winds and moderate seas are expected on either side of the trough axis. Fresh to locally strong trade winds are expected offshore Hispaniola, including approaches to the Windward Passage through the forecast period. Moderate or weaker winds along with moderate seas are forecast elsewhere E of the Bahamas through Fri, except S of 23N E of about 77W where mostly fresh trades are expected through Sat night.

TODAY
SE to S winds 10 to 15 kt. Seas 3 to 4 ft.

TONIGHT
SE winds 10 to 15 kt. Seas 3 to 4 ft.

WED
SE winds 10 to 15 kt. Seas 3 to 4 ft, subsiding to 2 to 3 ft.

WED NIGHT
E to SE winds 10 to 15 kt. Seas 3 to 4 ft.

THU
E winds 5 to 10 kt. Seas 2 to 4 ft.

THU NIGHT
E to SE winds 10 to 15 kt. Seas 3 to 4 ft.

FRI
E to SE winds 5 to 10 kt. Seas 2 to 4 ft.

FRI NIGHT
SE winds 10 to 15 kt. Seas 3 to 4 ft.

SAT
SE to S winds 5 to 10 kt. Seas 3 to 4 ft.

SAT NIGHT
SE to S winds 10 to 15 kt. Seas 3 to 4 ft.