Hazardous Coastal Conditions for the Mid-Atlantic; Storm System Approaching Southern Alaska
A Nor'easter will create hazardous marine and coastal conditions along the Mid-Atlantic coast through mid-week, with significant coastal flooding and beach erosion possible. Meanwhile, another strong storm system is forecast to bring high winds and heavy precipitation to portions of southern Alaska. Elsewhere, relatively benign weather is expected through the first half of the work week. Read More >
Hazardous Weather Conditions
Last Update: 428 AM EDT Tue Oct 20 2026
For More Weather Information:
3NM N American Shoal Light FL
Marine Zone Forecast
Today
Northeast winds 20 to 25 knots, decreasing to near 20 knots this afternoon. Seas 2 to 4 feet, occasionally to 5 feet, except 4 to 6 feet, occasionally to 8 feet, subsiding to 3 to 5 feet, occasionally to 7 feet west of cosgrove shoal light. nearshore waters very rough, becoming rough. A slight chance of showers.
Tonight
Northeast winds near 20 knots, becoming north to northeast and decreasing to 15 to 20 knots. Seas 2 to 4 feet, occasionally to 5 feet, except 3 to 5 feet, occasionally to 7 feet west of cosgrove shoal light. Nearshore waters rough, becoming choppy. A slight chance of showers.
Wednesday
Northeast winds 15 to 20 knots, decreasing to 10 to 15 knots in the afternoon. Seas 2 to 3 feet, except 3 to 4 feet, occasionally to 5 feet west of cosgrove shoal light. Nearshore waters choppy, becoming a light to moderate chop.
Wednesday Night
Northeast winds 10 to 15 knots. Seas 1 to 2 feet, except 2 to 3 feet west of cosgrove shoal light. nearshore waters a light to moderate chop.
Thursday
North to northeast winds 10 to 15 knots, becoming northeast. Seas 1 to 2 feet, except 2 to 3 feet west of cosgrove shoal light. Nearshore waters a light to moderate chop. A slight chance of showers.
Thursday Night
Northeast winds 10 to 15 knots, increasing to 15 to 20 knots after midnight. Seas 2 to 3 feet, except building to 3 to 4 feet, occasionally to 5 feet west of cosgrove shoal light. Nearshore waters a light to moderate chop, becoming choppy. A slight chance of showers and thunderstorms.
Friday
Northeast winds 15 to 20 knots. Seas 2 to 4 feet, occasionally to 5 feet, except around 4 feet, occasionally to 5 feet west of cosgrove shoal light. Nearshore waters choppy. A chance of showers with a slight chance of thunderstorms.
Friday Night
Northeast winds near 20 knots, increasing to 20 to 25 knots after midnight. Seas 2 to 4 feet, occasionally to 5 feet, except 4 to 6 feet, occasionally to 8 feet west of cosgrove shoal light. Nearshore waters rough, becoming very rough. A chance of showers and thunderstorms.
Saturday
Northeast winds near 25 knots. Seas 3 to 5 feet, occasionally to 6 feet, except 4 to 6 feet, occasionally to 8 feet west of cosgrove shoal light. Nearshore waters extremely rough. Showers likely with a chance of thunderstorms.
Saturday Night
Northeast winds 25 to 30 knots. Seas 4 to 6 feet, occasionally to 8 feet, except 5 to 8 feet, occasionally to 10 feet west of cosgrove shoal light. Nearshore waters extremely rough. Showers likely with a slight chance of thunderstorms.
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