Heavy Rain and Severe Thunderstorms in the Southwest; Coastal Flooding Along Portions of the Eastern Seaboard

A slow moving front will produce a threat for heavy rainfall and severe weather from the southwest into the western High Plains through the weekend. Heavy rainfall and isolated flash flooding and gusty winds will be possible this weekend into early next week in portions of southern Florida. Coastal flooding impacts remain possible through the weekend along the Southeast and Mid-Atlantic coasts Read More >

Coastal Waters Forecast for Gulf of America from West End of Seven Mile Bridge to Halfmoon Shoal out to 5 Fathoms (GMZ035) (Text-Only)
NWS Forecast for: Gulf of America from West End of Seven Mile Bridge to Halfmoon Shoal out to 5 Fathoms (GMZ035)
Issued by: National Weather Service Key West, FL
Last Update: 616 AM EDT Fri Oct 23 2026


Today: Northeast winds 15 to 20 knots, decreasing to 10 to 15 knots this afternoon. Seas 2 to 3 feet, subsiding to 1 to 2 feet. West of the marquesas keys, seas 3 to 4 feet, occasionally to 5 feet, subsiding to 2 to 3 feet. Nearshore waters choppy, becoming a light to moderate chop. A chance of showers.

Tonight: Northeast winds near 15 knots, increasing to near 20 knots. Seas 1 to 2 feet, building to 2 to 4 feet, occasionally to 5 feet. West of the marquesas keys, seas 2 to 3 feet, building to 3 to 5 feet, occasionally to 6 feet. Nearshore waters a moderate chop, becoming rough. A chance of showers with a slight chance of thunderstorms.

Saturday: Northeast winds near 20 knots, decreasing to 15 to 20 knots. Seas 2 to 4 feet, occasionally to 5 feet, except 4 to 5 feet, occasionally to 7 feet west of the marquesas keys. Nearshore waters rough, becoming choppy. A slight chance of showers and thunderstorms.

Saturday Night: North to northeast winds near 20 knots, decreasing to 15 to 20 knots. Seas 2 to 4 feet, occasionally to 5 feet, except 4 to 5 feet, occasionally to 7 feet west of the marquesas keys. Nearshore waters rough, becoming choppy. A slight chance of showers and thunderstorms.

Sunday: North to northeast winds 15 to 20 knots, increasing to near 20 knots. Seas 2 to 4 feet, occasionally to 5 feet, except 4 to 5 feet, occasionally to 7 feet west of the marquesas keys. nearshore waters choppy, becoming rough. A chance of showers with a slight chance of thunderstorms.

Sunday Night: North to northeast winds 20 to 25 knots. Seas 3 to 5 feet, occasionally to 6 feet. West of the marquesas keys, seas 6 to 7 feet, occasionally to 9 feet, building to 7 to 9 feet, occasionally to 11 feet. Nearshore waters very rough. A chance of showers.

Monday: North to northeast winds 20 to 25 knots, increasing to near 25 knots. Seas 3 to 5 feet, occasionally to 6 feet, except 7 to 9 feet, occasionally to 11 feet west of the marquesas keys. nearshore waters very rough, becoming extremely rough. A chance of showers.

Monday Night: North to northeast winds near 25 knots. Seas 4 to 6 feet, occasionally to 8 feet, except 7 to 9 feet, occasionally to 11 feet west of the marquesas keys. Nearshore waters extremely rough. A slight chance of showers.

Tuesday: North to northeast winds near 25 knots. Seas 3 to 5 feet, occasionally to 6 feet. West of the marquesas keys, seas 7 to 9 feet, occasionally to 11 feet. Nearshore waters extremely rough. A slight chance of showers and thunderstorms.

Tuesday Night: North to northeast winds 20 to 25 knots. Seas 3 to 5 feet, occasionally to 6 feet. West of the marquesas keys. seas 7 to 9 feet, occasionally to 11 feet, subsiding to 6 to 7 feet, occasionally to 9 feet. Nearshore waters very rough. A slight chance of showers and thunderstorms.







Zone Forecast: Gulf of America from West End of Seven Mile Bridge to Halfmoon Shoal out to 5 Fathoms (GMZ035)

Visit your local NWS office at: https://www.weather.gov/key