A lobe of the polar vortex, a ring of freezing air typically ... Slippery conditions will probably develop along Interstate 95 in Virginia and North Carolina from Wednesday into Thursday.

Texas has declared a state of emergency in response to the polar vortex. Maryland, Virginia, West Virginia, Kansas, Missouri, Kentucky and Arkansas have also declared a state of emergency.

The polar vortex of ultra-cold air usually spins around ... Hundreds of car accidents were reported in Virginia, Indiana, Kansas and Kentucky, where a state trooper was treated for non-life ...

The polar vortex has taken on an unexpected pattern ... Pennsylvania, Maryland, Virginia as well as Washington D.C. While hats, gloves and scarves may have become as normal as morning coffee ...

The polar vortex of ultra-cold air usually spins around ... School closings were widespread, with districts in Indiana, Virginia, Kentucky, Missouri and Kansas canceling or delaying the start ...

Data from a polar vortex splitting during 2002’s Southern Hemisphere sudden warming event helps expand models to accommodate ...

The polar vortex of ultra-cold air usually spins around ... Hundreds of car accidents were reported in Virginia, Indiana, Kansas and Kentucky, where a state trooper was treated for non-life ...