The Polar Vortex in the upper atmosphere has disintegrated after the intense warming of the stratosphere in mid-March.
Several days with temperatures of 10-20 degrees below the historical average could be dangerous to plants and ruin outdoor plans.
BISMARCK, N.D. (AP) — Harsh cold descended on the nation’s midsection Monday as a polar vortex gripped the Rockies ... most of Kentucky and portions of Arkansas, Tennessee, Mississippi ...
Flood warnings remain in effect across Kentucky, Arkansas, Tennessee, Mississippi, Alabama, West Virginia, Virginia, and Ohio. Frigid cold temperatures expected as polar vortex sweeps across U.S ...
The polar vortex is a part of Earth's atmosphere that is found over the North Pole. Strong winds typically keep the vortex locked in place, but periodically, changes in the weather can cause the ...