Heavy Rain and Snowmelt Threatens Flooding in Southeast and Mid-Atlantic; Strong Cold Front Presses Across the Northwest

A southern storm system will bring heavy to excessive rain from the Southeast to the Mid-Atlantic through Saturday with a secondary heavy rain threat area from the Lower Mississippi Valley into the Ohio Valley. Out West, a strong cold front will continue rain, mountain snow and gusty winds into Saturday morning. Another front will bring more unsettled weather to the region by Sunday.
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Gray/Portland, ME Local Forecast Office

25NM ENE Portsmouth NH

Marine Point Forecast

[NOTICE]

Today

WSW 15kt
3ft
High: 49 °F
Tonight

NNE 15kt
2-3ft
Low: 32 °F
Sunday

ENE 15kt
3-4ft
High: 42 °F
Sunday
Night
ENE 20kt
8ft
Low: 37 °F
Monday

NNE 20kt
9ft
High: 41 °F
Monday
Night
NW 25kt
7ft
Low: 30 °F
Tuesday

NW 25kt
4ft
High: 32 °F
Tuesday
Night
NW 20kt
2-3ft
Low: 25 °F
Wednesday

W 15kt
1-2ft
High: 38 °F

High and low forecast temperature values represent air temperature.

Associated Zone Forecast which includes this point

Last Update: 2:59 am EST Dec 15, 2018
Forecast Valid: 6am EST Dec 15, 2018-6pm EST Dec 21, 2018

View Nearby Observations

Detailed Forecast

Synopsis: ANZ100-152145- 237 AM EST Sat Dec 15 2018 .Synopsis for Stonington ME to Merrimack River MA out to 25 NM... Winds shift to the west and decrease behind a cold front today before shifting to the north as high pressure slides east into northern Maine tonight. Low pressure emerges off the Mid Atlantic coast and tracks near Cape Cod Sunday into Sunday night with an easterly wind developing over the Gulf of Maine, shifting to the north on Monday. Winds increase Monday night as an Arctic cold front drops in from the northwest. && $$

Today

WSW wind 10 to 15 kt becoming N in the afternoon. Mostly sunny. Seas 3 ft subsiding to 1 ft.

Tonight

NNE wind around 15 kt becoming ENE after midnight. Winds could gust as high as 25 kt. Mostly clear. Seas 2 to 3 ft.

Sunday

ENE wind around 15 kt, with gusts as high as 25 kt. A chance of rain after 4pm. Seas 3 to 4 ft.

Sunday Night

ENE wind around 20 kt, with gusts as high as 25 kt. Rain likely, mainly after midnight. Seas 5 ft building to 8 ft.

Monday

NNE wind 15 to 20 kt becoming NNW 10 to 15 kt in the afternoon. Winds could gust as high as 25 kt. Rain. Seas 9 ft subsiding to 7 ft.

Monday Night

NW wind 20 to 23 kt increasing to 22 to 25 kt after midnight. Winds could gust as high as 35 kt. Snow showers likely, possibly mixed with rain before 9pm, then a chance of snow showers. Seas 7 ft subsiding to 5 ft.

Tuesday

NW wind around 25 kt, with gusts as high as 35 kt. Mostly sunny. Seas around 4 ft.

Tuesday Night

NW wind 17 to 20 kt decreasing to 15 to 18 kt after midnight. Winds could gust as high as 30 kt. Mostly clear. Seas 2 to 3 ft.

Wednesday

NW wind 10 to 15 kt becoming W in the morning. Sunny. Seas 1 to 2 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.