>> a big story across the united states developing, excessive heat, widespread over an area, home to almost 15 million people. the advisories stretch from ohio into kansas city, warnings in place for places like st. louis. and the reason for that is we get a multiday event set up here where potentially through friday, maybe even saturday, we have triple-digit heat, and this is just factoring in, of course, without the humidity. this is just in the shade into the afternoon hours, but you factor in the humidity, it could feel as high as 113 in a few spots across this region and we'll see that kind of expand off towards the eastern half of the country. so, by say thursday and friday, atlanta gets into the middle 90s, feeling like into the 100s. new york city also will get into the lower 90s, will feel like close to 100 degrees by the afternoon hours. and with all of this set, plenty of instability in the atmosphere, severe storm potential there into parts of minnesota, into western wisconsin today. some flooding associated with this could also be seen around this region, mainly south of minneapolis going in towards the afternoon hours. and watching a few areas of disturbed weather, tropical storm don in the works. at this point, it looks like it