Significant Snowfall for Washington Cascades and Northern Rocky Mountains

A cold front will linger for several days from the Pacific Northwest to portions of the northern Plains early this week. Cold temperatures and copious moisture will combine to produce several feet of snow into the mountain passes, with up to 4 feet of snow down to 4000 feet in the northern Rockies. Travel through mountain passes will be very difficult.
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Last Update: 920 PM EST Sun Dec 17 2017

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Gray/Portland, ME Local Forecast Office

27NM NE Gloucester MA

Marine Zone Forecast


Synopsis: ANZ100-181630- 920 PM EST Sun Dec 17 2017 .Synopsis for Stonington ME to Merrimack River MA out to 25 NM... A weak area of low pressure will cross the waters Monday. Another low and associated cold front will cross the area Tuesday. Colder weather returns for Wednesday and Thursday as high pressure builds across the waters. $$

Overnight
N winds 5 to 10 kt, diminishing to around 5 kt. Seas 1 foot or less.
Mon
SW winds around 5 kt, increasing to 5 to 10 kt in the afternoon. Seas 1 foot or less. Light snow likely in the morning, then light snow and rain likely in the afternoon with vsby 1 to 3 nm.
Mon Night
W winds 5 to 10 kt. Seas 1 to 2 ft. Rain likely with a chance of light snow in the evening with vsby 1 to 3 nm.
Tue
SW winds 5 to 15 kt with gusts up to 20 kt, increasing to 10 to 20 kt with gusts up to 30 kt in the afternoon. Seas 1 to 2 ft, building to 2 to 4 ft in the afternoon.
Tue Night
W winds 15 to 25 kt with gusts up to 35 kt. Seas 3 to 5 ft.
Wed
W winds 15 to 25 kt with gusts up to 30 kt. Seas 2 to 4 ft.
Wed Night
NW winds 15 to 20 kt with gusts up to 30 kt. Seas 2 to 4 ft.
Thu
NW winds 10 to 15 kt with gusts up to 25 kt. Seas around 2 ft.
Thu Night
W winds 5 to 10 kt. Seas 1 to 2 ft.
Fri
S winds 5 to 15 kt with gusts up to 20 kt. Seas around 2 ft.
Fri Night
S winds 10 to 20 kt with gusts up to 30 kt. Seas 4 to 7 ft. A chance of rain.
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ABOUT THIS FORECAST

Last Update: 920 PM EST Sun Dec 17 2017
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