Storm Moving Through the Upper Midwest to the Northeast

Heavy rain and the potential for strong thunderstorms along and east of the Appalachians will precede a cold front, while snow showers will fall behind the front in the Ohio Valley, Upper Midwest and Great Lake States. Rain-on-snow flooding is possible in portions of New England and New York State. Rain and high elevation snow will return to the west.
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Last Update: 643 PM EST SAT FEB 25 2017

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Philadelphia, PA Local Forecast Office

10NM SE Lewes DE

Marine Zone Forecast


...SMALL CRAFT ADVISORY IN EFFECT THROUGH SUNDAY AFTERNOON...
Synopsis: IN THE WAKE OF THE STRONG COLD FRONT MOVING THROUGH OUR REGION SATURDAY AFTERNOON, COOLER AIR WILL SETTLE IN OVER THE REGION. HIGH PRESSURE THEN BUILDS SOUTH OF THE REGION ON SUNDAY BEFORE MOVING OFFSHORE ON MONDAY. LOW PRESSURE APPROACHING FROM THE WEST WILL LIFT A WARM FRONT THROUGH THE REGION ON TUESDAY. THE AFOREMENTIONED LOW WILL PROPAGATE FROM THE GREAT LAKES REGION INTO EASTERN CANADA. THE ASSOCIATED COLD FRONT WILL MOVE THROUGH WEDNESDAY NIGHT OR THURSDAY. A QUICK MOVING LOW PRESSURE SYSTEM WILL SLIDE OVER THE MID ATLANTIC AT THE END OF THE WEEK.

Tonight
W winds 15 to 20 kt...becoming NW 20 to 25 kt after midnight. Seas 4 to 6 ft. Mainly in SE swell with a dominant period of 10 seconds. numerous showers with isolated tstms early this evening...then a chance of showers late this evening.
Sun
NW winds 20 to 25 kt...becoming W 15 to 20 kt in the afternoon. Seas 3 to 5 ft. Mainly in SE swell with a dominant period of 9 seconds.
Sun Night
SW winds 10 to 15 kt with gusts up to 25 kt. Seas 2 to 4 ft. Mainly in SE swell with a dominant period of 9 seconds.
Mon
SW winds 10 to 15 kt. Seas 2 to 3 ft. Mainly in SE swell with a dominant period of 9 seconds.
Mon Night
S winds around 10 kt. Seas 2 to 3 ft. A chance of rain after midnight.
Tue
S winds 5 to 10 kt. Seas 2 to 3 ft. A chance of rain.
Tue Night
SW winds around 10 kt. Seas 3 to 4 ft. A chance of showers.
Wed
SW winds 10 to 15 kt. Seas 4 to 6 ft. A chance of showers.
Wed Night
SW winds 15 to 20 kt. Seas 5 to 8 ft. A chance of showers.
Thu
W winds 15 to 20 kt...increasing to 20 to 25 kt in the afternoon. Seas 5 to 8 ft. A chance of showers.
Thu Night
W winds 20 to 25 kt...diminishing to 15 to 20 kt after midnight. Seas 4 to 7 ft. winds and seas higher in and near tstms.

WINDS AND SEAS HIGHER IN AND NEAR TSTMS.
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ABOUT THIS FORECAST

Last Update: 643 PM EST SAT FEB 25 2017
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