Storm systems are sweeping across parts of the US Midwest and South, leaving at least 21 dead, including nine people who were ...

More than 1,000 tornadoes sprout up across the US in the average year, causing billions of dollars in damage and killing scores of Americans. Track them here.

The number of measles cases in the U.S. has risen to 1,024 with infections confirmed in 30 states, according to new CDC data ...

Forecasters are also warning of high-risk zones where tornadoes, damaging winds, hail, and flash flooding are possible.