Heavy Lake Effect Snow and Bitterly Cold Temperatures

A bitterly cold airmass will settle over much of the central and eastern U.S over the next several days. Well below normal temperatures and cold wind chills will be common. In addition, heavy lake effect snow will be possible especially over western New York where up to two feet is forecast by late Thursday.
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Last Update: 644 PM EST WED FEB 10 2016

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Philadelphia, PA Local Forecast Office

10NM SE Lewes DE

Marine Zone Forecast


...SMALL CRAFT ADVISORY IN EFFECT UNTIL 6 AM EST THURSDAY...
...GALE WARNING IN EFFECT FROM 6 AM EST THURSDAY THROUGH LATE THURSDAY NIGHT...
Synopsis: LOW PRESSURE OVER THE SAINT LAWRENCE VALLEY WILL MOVE INTO THE BAY OF FUNDY THURSDAY, WHILE HIGH PRESSURE OVER THE UPPER MISSISSIPPI VALLEY MOVES INTO THE MIDDLE ATLANTIC ON FRIDAY. A STRONG ARCTIC COLD FRONT WILL MOVE THROUGH OUR REGION ON SATURDAY, SWEEPING LOW PRESSURE OVER THE OUTER BANKS OF NORTH CAROLINA WELL OUT TO SEA. HIGH PRESSURE WILL MOVE INTO OUR AREA FROM THE OHIO VALLEY ON SUNDAY, AND MOVE OFF THE MID ATLANTIC COAST ON MONDAY. TWO STORM SYSTEMS ARE EXPECTED TO JOIN FORCES OVER THE MIDDLE ATLANTIC, AND MOVE UP THE EAST COAST ON TUESDAY AND WEDNESDAY.

Tonight
W winds 10 to 15 kt with gusts up to 20 kt... Increasing to 20 to 25 kt with gusts up to 30 kt. Seas 3 to 5 ft. Mainly in NW swell with a dominant period of 7 seconds. light freezing spray late.
Thu
W winds 20 to 25 kt with gusts up to 40 kt. Seas 4 to 6 ft. Mainly in NW swell with a dominant period of 4 seconds. light freezing spray.
Thu Night
NW winds 20 to 25 kt with gusts up to 35 kt... Diminishing to 10 to 15 kt with gusts up to 20 kt. Seas 4 to 6 ft...subsiding to 2 to 4 ft after midnight. Mainly in NW swell with a dominant period of 4 seconds. Light freezing spray.
Fri
W winds 5 to 10 kt...becoming SW late. Seas around 2 ft until late afternoon...then 1 foot or less. Mainly in NE swell with a dominant period of 7 seconds. light freezing spray early in the morning.
Fri Night
SW winds 15 to 20 kt with gusts up to 25 kt... Becoming W 20 to 25 kt with gusts up to 35 kt after midnight. Seas 2 to 3 ft...building to 3 to 5 ft after midnight. Scattered snow showers. Vsby 1 to 3 nm.
Sat
NW winds 25 to 30 kt with gusts up to 40 kt. Seas 4 to 7 ft. Light freezing spray.
Sat Night
NW winds 25 to 30 kt with gusts up to 40 kt. Seas 4 to 7 ft. Freezing spray.
Sun
NW winds 20 to 25 kt. Seas 4 to 7 ft... Subsiding to 3 to 5 ft in the afternoon. Freezing spray.
Sun Night
NW winds 15 to 20 kt...diminishing to 5 to 10 kt after midnight. Seas 2 to 3 ft.
Mon
S winds 5 to 10 kt. Seas around 2 ft. A chance of snow in the morning...then a chance of rain in the afternoon. Vsby 1 to 3 nm.
Mon Night
SE winds 10 to 15 kt. Seas 2 to 3 ft. A chance of rain. Vsby 1 to 3 nm.
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Last Update: 644 PM EST WED FEB 10 2016
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