Dangerous heat and humidity from the central U.S. to East Coast this weekend

Hot and very humid conditions will push the heat index to well over 100 degrees across a large portion of the central and eastern U.S. Excessive Heat Warnings and Heat Advisories are in effect for much of the Plains, Miss. Valley, Midwest, Ohio Valley, Mid-Atlantic and southern states. Be very cautious if you must do outdoor activities in these areas during the afternoon and evening this weekend.
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Last Update: 632 PM EDT SAT JUL 23 2016

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Philadelphia, PA Local Forecast Office

10NM SE Lewes DE

Marine Zone Forecast


Synopsis: A VERY WEAK FRONT WILL CROSS DELMARVA THIS EVENING. HIGH PRESSURE WILL BUILD OVER THE AREA LATER TONIGHT AND THROUGH THE DAY SUNDAY. A WEAK COLD FRONT WILL CROSS THE REGION MONDAY. HIGH PRESSURE WILL RETURN FOR THE MIDDLE PART OF THE WEEK. ANOTHER FRONT MAY AFFECT THE AREA THURSDAY AND THURSDAY NIGHT.

Tonight
SW winds 10 to 15 kt with gusts up to 20 kt...becoming NW 5 to 10 kt late. Seas 2 to 3 ft. Mainly in SE swell with a dominant period of 7 seconds. A chance of tstms early this evening. Scattered showers until early morning. Isolated tstms late this evening and early morning.
Sun
NE winds around 5 kt...becoming SE late. Seas 2 to 3 ft. Mainly in S swell with a dominant period of 5 seconds.
Sun Night
S winds 5 to 10 kt...becoming SW 10 to 15 kt. Seas 2 to 3 ft. Mainly in S swell with a dominant period of 9 seconds in the evening...becoming light.
Mon
S winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 4 ft. Mainly in SE swell with a dominant period of 9 seconds.
Mon Night
SW winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to 5 ft.
Tue
W winds 5 to 10 kt. Seas 2 to 4 ft.
Tue Night
SW winds 5 to 10 kt. Seas 2 to 3 ft.
Wed
SW winds around 5 kt...becoming S in the afternoon. Seas 2 to 3 ft.
Wed Night
S winds 5 to 10 kt. Seas around 2 ft.
Thu
S winds 5 to 10 kt. Seas around 2 ft. A chance of showers and tstms.
Thu Night
SW winds 5 to 10 kt. Seas around 2 ft. A chance of showers and tstms in the evening. winds and seas higher in and near tstms.

WINDS AND SEAS HIGHER IN AND NEAR TSTMS.
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Last Update: 632 PM EDT SAT JUL 23 2016
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