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: 106 PM EDT SUN JUL 24 2016

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Philadelphia, PA Local Forecast Office

26NM S New York NY

Marine Zone Forecast


Synopsis: HIGH PRESSURE WILL REMAIN IN CONTROL OVER THE AREA UNTIL A WEAK WARM FRONT RETURNS BACK TO THE NORTH AND EAST BY LATE TONIGHT. THIS COLD FRONT IS EXPECTED TO APPROACH FROM THE NORTHWEST MONDAY BEFORE SLOWLY MOVING INTO THE AREA MONDAY NIGHT. THE FRONT MAY STALL OVER THE DELMARVA OR NEARBY TO OUR SOUTH MIDWEEK AS HIGH PRESSURE BUILDS IN FROM THE NORTH. ANOTHER FRONT MAY AFFECT THE AREA LATE THIS WEEK INTO NEXT WEEKEND.

This Afternoon
S winds 10 to 15 kt. Seas around 2 ft. Mainly in S swell with a dominant period of 7 seconds.
Tonight
S winds 10 to 15 kt... Becoming SW 5 to 10 kt late. Seas 2 to 3 ft. Mainly in SE swell with a dominant period of 8 seconds. A chance of showers with a slight chance of tstms late.
Mon
SW winds 5 to 10 kt...becoming S 10 to 15 kt with gusts up to 20 kt in the afternoon. Seas 2 to 4 ft. Mainly in SE swell with a dominant period of 9 seconds. Patchy fog early in the morning. A chance of showers and tstms in the afternoon.
Mon Night
SW winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to 4 ft. Mainly in S swell with a dominant period of 8 seconds. A chance of showers and tstms.
Tue
W winds 5 to 10 kt. Seas 2 to 4 ft. A chance of showers and tstms in the morning.
Tue Night
SW winds 5 to 10 kt...becoming W after midnight. Seas 2 to 3 ft.
Wed
N winds around 5 kt...becoming E in the afternoon. Seas around 2 ft.
Wed Night
S winds 5 to 10 kt. Seas around 2 ft.
Thu
S winds around 5 kt...increasing to 5 to 10 kt in the afternoon. Seas around 2 ft. A chance of showers and tstms.
Thu Night
S 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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ABOUT THIS FORECAST

Last Update: 106 PM EDT SUN JUL 24 2016
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