Summer has gotten hotter nearly everywhere: See where it's worst

U.S. summers are heating up fast, and a new study shows nearly every major city is hotter than in 1970, with extreme heat risks on the rise.

Kentucky firefighter likely died shielding wife from catastrophic London tornado

The community of Laurel County, Kentucky, is grieving the loss of more than a dozen people, including a firefighter who spent nearly four decades helping others, after a tornado destroyed his neighborhood while he was on duty.

Watch: 'Fog tsunami' rolls over Lake Michigan

Stunning video captured by a Michigan photographer shows a giant fog wave rolling over Lake Michigan as a storm approached.

4.1-magnitude earthquake hits Tennessee, felt in Atlanta

A 4.1-magnitude earthquake struck Tennessee Saturday morning and was felt as far as Atlanta and western North Carolina.

Child among 2 dead after flooding, severe weather lash Plains

At least two people, including a child, have been killed after severe weather tore across portions of Texas and Oklahoma over the weekend.

See it: 'Firenado' spins through burning Iowa field sparked by lightning

Strong thunderstorms in Iowa and Nebraska on Thursday night caused several lightning strikes in the area, one of which started this fire whirl.

Boy dies after being swept away by floodwaters while walking to bus stop, police say

Since Wednesday, more than a foot of rain has now fallen in parts of Kentucky. A 9-year-old boy was tragically caught in a rushing flood Friday while walking to school.

What does a 100-year flood actually mean?

Weather forecasters often use terms like "100-year" or "500-year" floods. Here’s what those terms really mean and why these extreme events are happening more frequently.

Sleet and snow hit the Sierra

Sleet and snow hit the Sierra over the weekend and that kept everybody busy.

San Francisco weather: Heat records set, more warm temps expected

The sun was out on Monday and Bay Area residents flocked to the pools, where record temps were set, and more warm weather is expected.

Massive storm that fueled tornadoes, blizzard leaves 33 dead across US

A violent storm has killed at least 33 people across several states. The massive weather system brought tornadoes, dust storms and blizzard warnings to millions of people.

Tornado touches down in SoCal as storm knocks down trees

The National Weather Service confirmed they were investigating reports of a possible tornado that touched down in Los Angeles County's Pico Rivera.