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: 421 AM EDT Tue Mar 17 2026

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Key West, FL Local Forecast Office

7NM SE Molasses Reef Light FL

Marine Zone Forecast


Today
Northwest to north winds 10 to 15 knots early, increasing to 15 to 20 knots this morning, then becoming north to northeast 20 to 25 knots in the afternoon. Seas 1 to 2 feet, building to 4 to 7 feet, occasionally to 9 feet. Wave detail: northwest 2 feet at 4 seconds, becoming northwest 4 feet at 7 seconds and north to northeast 3 feet at 3 seconds. Showers likely with a chance of thunderstorms early this morning, then a chance of showers with a slight chance of thunderstorms this afternoon. winds and seas will be higher in and around showers and thunderstorms.
Tonight
North to northeast winds 20 to 25 knots, decreasing to near 20 knots. Seas 5 to 8 feet, occasionally to 10 feet. Wave detail: north to northeast 6 feet at 6 seconds and west to northwest 5 feet at 9 seconds. A chance of showers with a slight chance of thunderstorms.
Wednesday
North to northeast winds near 20 knots, decreasing to 15 to 20 knots. Seas 5 to 7 feet, occasionally to 9 feet. Wave detail: northeast 6 feet at 7 seconds and west 4 feet at 9 seconds. showers likely with a slight chance of thunderstorms.
Wednesday Night
North to northeast winds increasing to 20 to 25 knots. Seas 5 to 8 feet, occasionally to 10 feet. Showers likely with a slight chance of thunderstorms.
Thursday
North to northeast winds 20 to 25 knots. Seas 5 to 8 feet, occasionally to 10 feet. A chance of showers with a slight chance of thunderstorms.
Thursday Night
North to northeast winds near 20 knots. Seas 5 to 7 feet, occasionally to 9 feet. A chance of showers.
Friday
North to northeast winds 15 to 20 knots. Seas 4 to 6 feet, occasionally to 8 feet. A slight chance of showers.
Friday Night
North to northeast winds 15 to 20 knots, decreasing to near 15 knots. Seas 3 to 5 feet, occasionally to 6 feet. A slight chance of showers.
Saturday
Northeast winds decreasing to 10 to 15 knots. Seas 3 to 5 feet, occasionally to 6 feet.
Saturday Night
Northeast to east winds 10 to 15 knots. Seas 3 to 4 feet, occasionally to 5 feet.



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421 AM EDT Tue Mar 17 2026
 
 

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