Severe Weather and Flooding From Portions of the Plains to the Mid-Atlantic

A potent spring storm system with abundant moisture will bring a chance of significant severe weather and heavy rain today into tonight. Damaging winds, large hail, and a couple of tornadoes will be possible across the Tennessee Valley, middle Ohio Valley, and portions of the Mid-Atlantic. Heavy rain and flooding are possible from the Ozarks to the Tennessee Valley.
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Last Update: 1242 PM EDT SAT MAY 27 2017

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Philadelphia, PA Local Forecast Office

6NM WNW Fenwick Island Buoy DE

Marine Zone Forecast


Synopsis: AS A FRONT REMAINS DRAPED TO OUR SOUTH TODAY AND TONIGHT, WEAK LOW PRESSURE WILL TRACK ALONG IT AND EXIT OFF THE MID ATLANTIC COAST TONIGHT INTO SUNDAY. ANOTHER LOW PRESSURE SYSTEM IS FORECAST TO CONSOLIDATE JUST NORTH OF THE GREAT LAKES MONDAY AND THEN GRADUALLY SHIFT EASTWARD THROUGH WEDNESDAY. AN ASSOCIATED COLD FRONT MOVES THROUGH OUR AREA LATER MONDAY, THEN A SECONDARY COLD FRONT ARRIVES DURING TUESDAY. HIGH PRESSURE BUILDS FROM THE MIDWEST TO THE CAROLINAS WEDNESDAY.

This Afternoon
SE winds 5 to 10 kt. Waves around 2 ft or less. Mainly in S swell with a dominant period of 7 seconds. A chance of showers and tstms late.
Tonight
E winds 5 to 10 kt. Waves around 2 ft or less, then around 3 ft after midnight. Mainly in S swell with a dominant period of 7 seconds. A chance of tstms early in the evening. A chance of showers in the evening.
Sun
E winds 10 to 15 kt. Seas around 3 ft early in the morning, then around 2 ft or less, then around 3 ft late. Mainly in SE swell with a dominant period of 7 seconds.
Sun Night
SE winds 10 to 15 kt. Seas 3 to 4 ft. Mainly in E swell with a dominant period of 6 seconds. scattered showers after midnight.
Mon
S winds 5 to 10 kt. Seas 3 to 4 ft. Scattered showers and tstms.
Mon Night
S winds 5 to 10 kt in the evening, becoming variable less than 5 kt. Seas around 3 ft in the evening, then around 2 ft or less. Scattered showers and tstms in the evening.
Tue
SE winds around 5 kt, becoming S in the afternoon. Waves around 2 ft or less.
Tue Night
SW winds 5 to 10 kt. Waves around 2 ft or less.
Wed
SW winds 5 to 10 kt. Waves around 2 ft or less.
Wed Night
SW winds 5 to 10 kt. Waves around 2 ft or less. 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: 1242 PM EDT SAT MAY 27 2017
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