Strong to Severe Thunderstorms Continue Tonight in the East; Early Heat Wave in the West

Scattered strong to severe storms with damaging winds and potentially a tornado or two are expected tonight from the coastal Carolinas into the Mid-Atlantic states. An anomalously early heat wave will continue to intensify and expand across the West and Southwest as the week progresses. Numerous daily and potentially monthly record highs are expected to be broken. Read More >

Hazardous Weather Conditions

Last Update: 1025 PM EDT Mon Mar 16 2026

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Key West, FL Local Forecast Office

3NM NE Content Keys FL

Marine Zone Forecast

Overnight

West to northwest winds near 15 knots, becoming northwest to north and increasing to 15 to 20 knots late. Seas 1 to 2 feet, except 2 to 3 feet west of the marquesas keys. nearshore waters a moderate chop, becoming choppy. Showers with a chance of thunderstorms. Winds and seas will be higher in and around showers and thunderstorms.

Tuesday

North winds 15 to 20 knots, increasing to 20 to 25 knots in the afternoon. Seas 2 to 3 feet, building to 3 to 5 feet, occasionally to 6 feet. West of the marquesas keys, seas 3 to 4 feet, occasionally to 5 feet, building to 6 to 7 feet, occasionally to 9 feet. Nearshore waters choppy, becoming very rough. A chance of showers with a slight chance of thunderstorms.

Tuesday Night

North to northeast winds decreasing to near 20 knots. Seas 3 to 5 feet, occasionally to 6 feet, except 5 to 7 feet, occasionally to 9 feet west of the marquesas keys. Nearshore waters becoming rough. A chance of showers with a slight chance of thunderstorms.

Wednesday

Northeast winds near 20 knots. Seas 3 to 5 feet, occasionally to 6 feet, except 4 to 6 feet, occasionally to 8 feet west of the marquesas keys. Nearshore waters rough. A chance of showers with a slight chance of thunderstorms.

Wednesday Night

Northeast winds 20 to 25 knots. Seas 3 to 5 feet, occasionally to 6 feet, except 5 to 6 feet, occasionally to 8 feet west of the marquesas keys. Nearshore waters very rough. A chance of showers with a slight chance of thunderstorms.

Thursday

North to northeast winds near 20 knots, decreasing to 15 to 20 knots. Seas 3 to 5 feet, occasionally to 6 feet, except 5 to 6 feet, occasionally to 8 feet west of the marquesas keys. nearshore waters rough, becoming choppy. A chance of showers with a slight chance of thunderstorms.

Thursday Night

North to northeast winds near 20 knots. Seas 2 to 4 feet, occasionally to 5 feet, except 4 to 5 feet, occasionally to 6 feet west of the marquesas keys. Nearshore waters rough. A slight chance of showers.

Friday

North to northeast winds 15 to 20 knots, decreasing to near 15 knots. Seas 3 to 5 feet, occasionally to 6 feet, subsiding to 2 to 4 feet, occasionally to 5 feet. West of the marquesas keys seas 5 to 6 feet, occasionally to 8 feet, subsiding to 4 to 5 feet, occasionally to 6 feet. Nearshore waters choppy, becoming a moderate chop. A slight chance of showers.

Friday Night

North to northeast winds near 15 knots. Seas 2 to 3 feet, except 3 to 4 feet, occasionally to 5 feet west of the marquesas keys. Nearshore waters a moderate chop.

Saturday

Northeast winds 10 to 15 knots, becoming 5 to 10 knots. Seas 2 to 3 feet. Nearshore waters a light to moderate chop, becoming smooth to a light chop.

Saturday Night

Northeast to east winds 5 to 10 knots. Seas 2 to 3 feet, except around 3 feet west of the marquesas keys. Nearshore waters smooth to a light chop.