Heat advisory remains in effect
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Dangerous heat, severe storms could hit
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Much of the U.S. is under extreme heat warnings or advisories while New York, Philadelphia and Washington could feel like 100 degrees or more.
A phenomenon called "corn sweat" could exacerbate the impacts of the extreme heat blanketing a large portion of the U.S., according to experts.
An intense heat wave threatens millions of people across the Southeast with temperatures reaching 115 degrees through midweek.
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WQRF Rockford on MSNFog possible tonight, heat and humidity returns tomorrowAside from an isolated shower or storm mainly South of I-88, most in the Stateline should stay dry this evening. Temperatures will gradually fall to the low 70s, meeting the dew point under a calm wind.
The National Weather Service released an updated extreme heat warning at 12:53 p.m. on Friday in effect until 9 p.m. for Eastern Montgomery and Lower Bucks as well as Delaware and Philadelphia counties.
A heat advisory will continue Sunday afternoon before late-day thunderstorms cool things down. More heat and storms are likely through the workweek.
Heat advisories were in effect for a large portion of the East Coast from central Florida to Virginia through much of the weekend.