Heavy Snow & Ice Across Portions of the Plains and Midwest; Unsettled in the Pacific Northwest

Heavy snow and freezing rain will impact portions of the Plains, upper Midwest, and Great Lakes into Monday. Significant snow accumulations and gusty winds are likely in some areas. Farther to the south, rain and a few thunderstorms are expected over the Mississippi, Tennessee, and Ohio Valleys. Heavy rain & mountain snowfall will also continue from northern California into the Pacific Northwest.
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Last Update: 943 PM EST Sun Jan 21 2018

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Philadelphia, PA Local Forecast Office

10NM SE Lewes DE

Marine Zone Forecast


...GALE WATCH IN EFFECT FROM TUESDAY MORNING THROUGH TUESDAY AFTERNOON...
Synopsis: Low pressure will move from the southern Plains to the Great Lakes region through Tuesday. A warm front will be moving north across our area later tonight and Monday. As the low moves into southeastern Canada, a cold front is expected across our area Tuesday. High pressure will then build across the region for the end of the week.

Overnight
SW winds around 10 kt. Gusts up to 20 kt. Seas 2 ft or less. Swell mainly from the SE with a dominant period of 7 seconds.
Mon
S winds 10 to 15 kt. Gusts up to 20 kt early in the afternoon. Seas 2 ft or less. Swell mainly from the SE with a dominant period of 5 seconds.
Mon Night
S winds 10 to 15 kt with gusts up to 25 kt, increasing to 15 to 20 kt with gusts up to 30 kt after midnight. Seas 2 ft or less, then 3 to 4 ft early in the evening. Swell mainly from the S with a dominant period of 5 seconds. a chance of showers after midnight.
Tue
SW winds 20 to 25 kt with gusts up to 40 kt, becoming W 10 to 15 kt with gusts up to 25 kt late. Seas 4 to 7 ft, subsiding to 3 to 5 ft late. Swell mainly from the S with a dominant period of 6 seconds. Showers until late afternoon, then showers likely late.
Tue Night
W winds 10 to 15 kt with gusts up to 25 kt. Seas 3 to 5 ft.
Wed
W winds 15 to 20 kt with gusts up to 30 kt. Seas 3 to 4 ft.
Wed Night
NW winds around 15 kt with gusts up to 25 kt. Seas 3 to 4 ft.
Thu
NW winds 15 to 20 kt. Seas around 3 ft.
Thu Night
NW winds 10 to 15 kt, becoming N 5 to 10 kt after midnight. Seas 2 ft or less.
Fri
N winds 5 to 10 kt, becoming NE in the afternoon. Seas 2 ft or less.
Fri Night
S winds 5 to 10 kt. Seas 2 ft or less.
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Last Update: 943 PM EST Sun Jan 21 2018
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