Severe Thunderstorm and Flash Flooding Threats in the South

Organized severe thunderstorms capable of producing mainly large hail and perhaps damaging winds are expected across portions of Louisiana this afternoon with a second round further west tonight. Heavy thunderstorms may lead to flash flooding over portions of the northern Gulf Coast today through Saturday. Several inches of excessive rainfall are possible with Flash Flood Watches in effect.
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Hazardous Weather Conditions

Hazardous Weather Outlook

Last Update: 322 PM EDT Tue Apr 13 2021

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Gray/Portland, ME Local Forecast Office

25NM ENE Portsmouth NH

Marine Zone Forecast

Synopsis: ANZ100-140930- 322 PM EDT Tue Apr 13 2021 .Synopsis for Stonington ME to Merrimack River MA out to 25 NM... A weak high pressure ridge axis will remain over the area through Thursday with generally light winds over the waters. Low pressure will take shape south of New England late Thursday before strengthening south of the Gulf of Maine on Friday with gale force winds becoming increasingly likely. This low will begin to move east...away from the waters on Saturday. $$

Tonight

E winds 5 to 10 kt. Seas 3 to 4 ft.

Wed

NE winds 5 to 10 kt, becoming SE in the afternoon. Seas 3 to 4 ft.

Wed Night

S winds 5 to 10 kt. Seas 2 to 4 ft.

Thu

E winds 5 to 15 kt, becoming 10 to 15 kt in the afternoon. Seas 2 to 3 ft.

Thu Night

E winds 15 to 25 kt with gusts up to 30 kt. Seas 3 to 4 ft, building to 4 to 6 ft after midnight. A chance of rain in the evening, then rain likely after midnight.

Fri

NE winds 20 to 25 kt with gusts up to 35 kt. Seas 6 to 9 ft. Rain.

Fri Night

NE winds 20 to 25 kt, becoming N 15 to 20 kt after midnight. Seas 7 to 9 ft. Rain.

Sat

N winds 15 to 20 kt, diminishing to 10 to 15 kt in the afternoon. Seas 6 to 9 ft. A chance of showers in the morning.

Sat Night

N winds 5 to 15 kt, becoming 5 to 10 kt after midnight. Seas 4 to 6 ft.

Sun

N winds 5 to 10 kt, becoming SE in the afternoon. Seas 3 to 4 ft.

Sun Night

SW winds 5 to 10 kt. Seas 2 to 3 ft.