Stormy Weather Along the East Coast; Extended Warm-up for the West

A strong low pressure system will bring heavy rain, gusty winds, and thunderstorms along the east coast. Isolated severe thunderstorms could produce damaging winds and a few tornadoes in the Southeast. Heavy rains may result in excessive runoff and flash flooding. Building high pressure out west will produce above normal temperatures, especially, in the Pacific Northwest.
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Gray/Portland, ME Local Forecast Office

20NM ENE Portsmouth NH

Marine Point Forecast

[NOTICE]

Overnight

SW 10kt
2ft
Low: 41 °F
Tuesday

S 15kt
2ft
High: 53 °F
Tuesday
Night
S 15kt
3-4ft
Low: 43 °F
Wednesday

SE 15kt
4ft
High: 48 °F
Wednesday
Night
SE 15kt
7ft
Low: 45 °F
Thursday

S 10kt
7ft
High: 51 °F
Thursday
Night
SW 10kt
6ft
Low: 45 °F
Friday

WSW 10kt
5ft
High: 52 °F
Friday
Night
S 10kt
4-5ft
Low: 44 °F

High and low forecast temperature values represent air temperature.

Associated Zone Forecast which includes this point

Last Update: 9:47 pm EDT Apr 23, 2018
Forecast Valid: 12am EDT Apr 24, 2018-6pm EDT Apr 30, 2018

View Nearby Observations

Detailed Forecast

Synopsis: ANZ100-241600- 947 PM EDT Mon Apr 23 2018 .Synopsis for Stonington ME to Merrimack River MA out to 25 NM... High pressure shifts eastward into the Atlantic tonight. The next low pressure system will develop over the mid Atlantic coast on Tuesday, moving north toward New England on Wednesday with a cold front crossing the Gulf of Maine on Thursday. Brief high pressure brings quieter weather on Friday before the next frontal system arrives Saturday. $$

Overnight

SW wind around 10 kt. Clear. Seas around 2 ft.

Tuesday

SW wind 10 to 15 kt becoming S in the afternoon. Winds could gust as high as 20 kt. Sunny. Seas around 2 ft.

Tuesday Night

S wind 12 to 15 kt decreasing to 10 to 13 kt after midnight. Winds could gust as high as 25 kt. Increasing clouds. Seas 3 to 4 ft.

Wednesday

SE wind 10 to 15 kt. Rain, mainly after 9am. Patchy fog after noon. Seas 2 ft building to 4 ft.

Wednesday Night

SE wind 10 to 15 kt, with gusts as high as 25 kt. Rain. Patchy fog. Seas 5 ft building to 7 ft.

Thursday

S wind around 10 kt. Showers likely, mainly before 7am. Patchy fog before 9am. Seas around 7 ft.

Thursday Night

SW wind around 10 kt. Partly cloudy. Seas around 6 ft.

Friday

WSW wind around 10 kt becoming S in the afternoon. Mostly sunny. Seas around 5 ft.

Friday Night

S wind 5 to 10 kt. A chance of showers. Seas 4 to 5 ft.

*Notices:

This forecast is for a single location. For safety concerns, mariners should be aware of the weather over a larger area. Forecast information for a larger area can be found within the zone forecast and the NDFD graphics.
The forecast conditions at a particular point may not exceed the criteria of a Small Craft Advisory, Gale, Storm etc. These watches/warnings/advisories are issued for the entire zone in which the point resides and mariners should act accordingly.