Strong to severe storms possible Fri. evening
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A sun/cloud mix is on tap as Friday gets underway, but clouds will quickly gather bringing the chance for scattered showers and thunderstorms during the afternoon.
Dangerous heat spreads across the West while severe storms and flash flooding threaten the Mississippi Valley and Great Lakes.
Some of the thunderstorms could produce rainfall rates of 2 to 3 inches per hour, potentially resulting in road closures and travel disruptions.
Severe Thunderstorm Watch* Strong to severe thunderstorms in the evening, then showers and rumbles of thunder after midnight. Lows in the upper 60s. Chance of rain 80 percent. Friday: Partly cloudy with isolated showers and thunderstorms in the afternoon and evening.
A prolonged heat wave and daily thunderstorm risks are forecast through the end of the week, with extreme heat indices reaching up to 110 degrees on Friday.