Meteorologists blame a stretched polar vortex, moisture, lack of sea ice for dangerous winter blast

Meteorologists warn that a stretched polar vortex could bring severe winter weather to much of the United States ...

What is a polar vortex? Wind chill temperature? Winter weather terms to know

As a winter storm approaches Western North Carolina and other regions, here's what to know about deciphering forecaster terms.
The Cincinnati Enquirer

Polar vortex to bring another round of extreme cold. What this means for Ohio

Bundle up. This weekend will get seriously cold. The planet's most extreme cold air will be barreling into the central and eastern United States this coming weekend "like a wrecking ball," said ...
UPI

Weakened polar vortex means more bitter cold forecast for U.S. this month

As one blast of Arctic air pushes out to sea, already a new surge of cold air, driven by a breakdown of the polar vortex, is likely to expand from central Canada and through the midwestern and ...

Winter is about to reawaken as the polar vortex unlocks blasts of cold air into New England

The polar jet stream, which is affected by the polar vortex above it, has become quite wavy, allowing Arctic air to ...