Meteorologists say the United States is getting hit by almost every kind of extreme weather at once, as spring air masses ...

And the dreaded polar vortex will again invade the Midwest and East with soul-crushing Arctic chill. This forecast of ...

Around the same time as the heat starts blasting Phoenix, the polar vortex — a system that usually keeps frigid air penned up near the North Pole — is forecast to send its chill deep into the Midwest ...

The United States is getting slammed by a stretch of weather extremes, from flooding rain to record heat and late-season snow ...