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: 1017 PM EST Sun Dec 17 2017

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New York, NY Local Forecast Office

21NM SSW Montauk NY

Marine Zone Forecast


Synopsis: ANZ300-181545- 1017 PM EST Sun Dec 17 2017 .Synopsis for the Long Island Waters and New York Harbor... A warm front approaches from the south overnight. Weak low pressure tracks across the waters on Monday, then exits to the northeast Monday night. A cold front approaches on Tuesday and passes through the region Tuesday Night, with high pressure building from Wednesday through Friday. $$

Overnight
E winds around 5 kt. Seas 1 ft or less. Slight chance of freezing rain late this evening, then chance of rain and snow. Rain late. Vsby 1 to 3 nm late this evening and early morning.
Mon
SE winds 5 to 10 kt, becoming SW in the afternoon. Seas 1 ft or less. Light rain likely in the morning.
Mon Night
W winds 10 to 15 kt with gusts up to 25 kt. Seas building to 2 to 4 ft.
Tue
W winds 15 to 20 kt, increasing to 20 to 25 kt in the afternoon. Seas 3 to 4 ft, building to 4 to 6 ft in the afternoon.
Tue Night
W winds 20 to 25 kt with gusts up to 30 kt. Seas 4 to 7 ft.
Wed
NW winds 20 to 25 kt with gusts up to 30 kt. Seas 4 to 7 ft.
Wed Night
NW winds 20 to 25 kt, diminishing to 15 to 20 kt after midnight. Seas 4 to 6 ft.
Thu
NW winds 15 to 20 kt, diminishing to 5 to 10 kt in the afternoon. Seas subsiding to 2 to 4 ft.
Thu Night
SW winds 5 to 10 kt, becoming SE after midnight. Seas 2 to 3 ft.
Fri
S winds 10 to 15 kt. Seas around 3 ft.
Fri Night
S winds 15 to 20 kt. Seas building to 3 to 5 ft, then to 5 to 6 ft after midnight. Chance of showers in the evening, then chance of rain after midnight.
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Last Update: 1017 PM EST Sun Dec 17 2017
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