More than 50 million in Northeast face severe weather risk as wildfire smoke impacts air quality
A severe weather threat is in effect from the Ohio Valley through the Mid-Atlantic and Northeast.
Heat and severe storms damper July 4th celebrations, leave hundreds of thousands without power
While millions of Americans across the Northeast experienced record-setting temperatures, thunderstorms in the Midwest downed trees, ruptured power lines and made transportation treacherous.
It could be hottest July 4th ever for millions of Americans, with over 300 record temperatures forecast
Extremely dangerous heat, coupled with humidity, could result in heat index readings of 100 to 115 degrees from the Midwest to the East Coast, forecasters said.
Dangerous heat wave impacting large swathes of the U.S. this week, forecasters warn
A heat wave will blast a large swath of the U.S. this week. The National Weather Service says temperatures will feel hotter because of the high humidity that's arriving with…