Winter Storm Bringing Blizzard Conditions, Heavy Snow and Ice through Tonight

A sprawling winter storm will continue to produce blizzard conditions across the eastern Dakotas, western and southern Minnesota, and northern Iowa. Areas of moderate to heavy snow are expected over much of the Upper Midwest, Great Lakes, and Northeast. To the south of the snow, a wintry mix including some ice accumulations, will impact portions of the northern Mid-Atlantic with slick travel.
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Last Update: 336 PM EST Sat Jan 18 2020

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Philadelphia, PA Local Forecast Office

15NM E Lewes DE

Marine Zone Forecast

...SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE SUNDAY NIGHT...

Synopsis: Low pressure over the Great Lakes will move eastward to our north through tonight reaching the Gulf of Maine by Sunday morning. The low is forecast to pull a cold front through our region late tonight, followed by a secondary cold front on Sunday night. High pressure is expected to build from the north central states on Monday to the Middle Atlantic coast on Wednesday. The high should drift out to sea late in the week. The next low pressure system could affect the region next Saturday.

This Afternoon
S winds 15 to 20 kt with gusts up to 30 kt. Seas 3 to 5 ft. Swell mainly from the E with a dominant period of 7 seconds. Rain.
Tonight
SW winds 20 to 25 kt, diminishing to 15 to 20 kt after midnight. Gusts up to 30 kt. Seas 4 to 6 ft. Swell mainly from the SE with a dominant period of 8 seconds. rain, mainly in the evening.
Sun
NW winds 20 to 25 kt. Gusts up to 30 kt. Seas 4 to 7 ft. Swell mainly from the S with a dominant period of 7 seconds.
Sun Night
NW winds 20 to 25 kt with gusts up to 30 kt. Seas 4 to 6 ft. Swell mainly from the NW with a dominant period of 6 seconds.
Mon
NW winds 20 to 25 kt with gusts up to 30 kt. Seas 3 to 5 ft.
Mon Night
N winds 15 to 20 kt with gusts up to 25 kt. Seas 3 to 5 ft.
Tue
N winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to 4 ft.
Tue Night
N winds 10 to 15 kt. Gusts up to 20 kt in the evening. Seas around 3 ft.
Wed
N winds 5 to 10 kt. Seas around 3 ft in the morning, then 2 ft or less.
Wed Night
N winds around 5 kt. Seas 2 ft or less.
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ABOUT THIS FORECAST

Last Update: 336 PM EST Sat Jan 18 2020
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