Severe weather has returned to the nation's midsection for the next several days. It could even morph into an outbreak by Sunday and Monday. We have the latest forecast details you need.

April has brought with it a pattern in the jet stream that has caused repeated rounds of severe weather for many of the same areas in the Central U.S. Meteorologist Rob Shackelford breaks down where tornadoes typically are seen in April, why they weren't where they were expected to be and when, if ever, this pattern will change.

The new “State of the Air” report from the American Lung Association reveals the cleanest cities and air quality rankings across the country, from top-ranked metro areas like Bozeman, Montana and Casper, Wyoming to standout performers like Bangor, Maine. Did your city make the list?

A new study from Climate Central finds the fastest-warming states and cities from 55 years of data. Do you live in one of these places?

Scientists now believe that the Atlantic Meridional Overturning Circulation could slow much sooner than expected. We will take a look at what this is and what the slowdown could mean for the globe.