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: 703 AM EDT Tue Oct 20 2026
For More Weather Information:
60NM SW Nantucket MA
Marine Zone Forecast
...GALE WARNING IN EFFECT THROUGH WEDNESDAY EVENING...
Today
NE winds around 30 kt with gusts up to 45 kt. Seas 10 to 11 ft. Wave detail: E 11 ft at 10 seconds and N 8 ft at 7 seconds. A slight chance of showers this morning.
Tonight
NE winds 30 to 35 kt with gusts up to 45 kt. Seas 10 to 13 ft. Wave detail: NE 13 ft at 9 seconds and N 6 ft at 7 seconds.
Wed
NE winds 30 to 35 kt with gusts up to 45 kt. Seas 12 to 14 ft. Wave detail: NE 14 ft at 9 seconds and N 9 ft at 8 seconds. A chance of showers in the afternoon.
Wed Night
NE winds 30 to 35 kt with gusts up to 45 kt. Seas 12 to 13 ft. Wave detail: NE 13 ft at 10 seconds and N 10 ft at 8 seconds. A chance of showers. Patchy fog after midnight.
Thu
N winds 25 to 35 kt with gusts up to 40 kt. Seas 9 to 13 ft. Wave detail: E 12 ft at 9 seconds and N 9 ft at 7 seconds. A chance of showers in the morning.
Thu Night
N winds 25 to 30 kt with gusts up to 35 kt. Seas 7 to 10 ft. Wave detail: N 10 ft at 7 seconds and E 10 ft at 9 seconds.
Fri
N winds 25 to 30 kt. Seas 8 to 11 ft.
Fri Night
N winds 20 to 25 kt with gusts up to 30 kt. Seas 6 to 9 ft.
Sat And Sat Night
N winds 15 to 20 kt, becoming NW 5 to 10 kt. Seas 5 to 8 ft.
seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height.
seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height.
Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height.
Additional Forecasts and Information
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