The "polar vortex" will be digging south into the Midwest by midweek — that's a fancy phrase for a strong blast of extremely cold temperatures plummeting south, guided by the jet stream.

Much of the U.S. has seen a major dip in temperatures combined with winter storm conditions over the weekend, thanks to an expansion of the polar vortex—the area of cold air that circulates ...

Unfortunately like the term “Polar Vortex,” atmospheric rivers have been mischaracterized in the media and many ... Atmospheric river affecting the West Coast during the first week of ...

While this polar vortex event will not affect Northern California, its presence in the central and eastern U.S. will have an impact on the weather pattern for the West Coast. What is the polar vortex?

Record heat is affecting parts of the West, ... after a winter lacking in polar vortex-induced cold air outbreaks, ... sweeping all the way to the Gulf Coast by early Saturday.

After being absent for the entire winter, the polar vortex is blasting in with a bitter Arctic blast across the eastern U.S. for Mother's Day weekend, setting the stage for what could be a ...

Rather, a polar vortex is a "well-known feature of Earth's atmosphere that describes the high-altitude winds that blow around the pole every winter, miles above us in a region called the ...

“Polar vortex” became a weather buzzword back in 2014, ... Drought conditions are widespread and expanding up and down the rain-deprived West Coast — even including interior Washington state.

Much of the U.S. has seen a major dip in temperatures combined with winter storm conditions over the weekend, thanks to an expansion of the polar vortex—the area of cold air that circulates ...

The Pacific-West Coast Ridge. In recent weeks, the Pacific jet stream has delivered a series of wet, windy storms to the Pacific Northwest and Northern California, ... Weaker Polar Vortex.