"The upcoming week will see a potent and long duration atmospheric river," the WPC said.

The more significant storm will hit on Monday and Tuesday, but impacts from the first storm will arrive on Friday.

States across the central and eastern U.S. are under extreme heat watches and warnings as the areas face a dangerous heat wave throughout the first half of the week, according to the National Weather ...

Millions of Americans are experiencing severe weather conditions this week as heavy rainfall, extreme heat and thunderstorms are forecast across the U.S., with life-threatening conditions possible in ...