January's reputation for cold and snow is well deserved, but it can also deliver tornadoes and damaging atmospheric rivers.

In San Francisco, authorities issued the first-ever tornado warning.Elsewhere, inclement weather plagued areas of the U.S., with dangerous conditions including heavy snow in upstate New York ...

In San Francisco, authorities issued the first-ever tornado warning.Elsewhere, inclement weather plagued areas of the U.S., with dangerous conditions including heavy snow in upstate New York, a major ...