Dangerous Heat Building in the West; Severe Storms in the Upper Midwest

A long duration heat wave will build across the Southwest, California, and Pacific Northwest. Dangerous heat is also forecast for the Great Basin and South Plains. Severe storms in the Upper Midwest may have locally heavy rain, damaging winds, and very large hail. Heavy rain and flooding will also be possible in the Deep South and Appalachians.
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Last Update: 1006 PM EDT Thu Aug 13 2020

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Gray/Portland, ME Local Forecast Office

11NM S Brunswick ME

Marine Zone Forecast


Synopsis: ANZ100-141615- 1006 PM EDT Thu Aug 13 2020 .Synopsis for Stonington ME to Merrimack River MA out to 25 NM... High pressure builds out of northern Canada and into the Maritimes through the weekend. Increasing northeast winds as the high builds in may bring a window of gusts and building seas before a return to calmer weather. A slow moving frontal system will approach the waters by early next week. && $$

Overnight
SW winds around 5 kt, becoming N. Seas 1 to 2 ft.
Fri
N winds around 5 kt, becoming E in the afternoon. Seas 1 to 2 ft.
Fri Night
NE winds 5 to 15 kt. Seas 1 foot or less, then around 2 ft after midnight.
Sat
E winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft.
Sat Night
NE winds 5 to 10 kt. Seas 2 to 3 ft.
Sun
E winds 5 to 10 kt with gusts up to 20 kt. Seas 2 to 4 ft.
Sun Night
E winds 5 to 10 kt. Seas 2 to 4 ft. A chance of showers after midnight.
Mon
E winds 5 to 10 kt. Seas 2 to 4 ft. A chance of showers.
Mon Night
SE winds 5 to 10 kt, becoming NW after midnight. Seas 2 to 4 ft. A chance of showers.
Tue
SW winds around 5 kt. Seas 2 to 4 ft. A chance of showers.
Tue Night
W winds around 5 kt. Seas 2 to 3 ft.
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Last Update: 1006 PM EDT Thu Aug 13 2020
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