The Arctic Oscillation has positive and negative phases. During a positive phase, the upper-level polar winds are strong, reducing the likelihood of Arctic air spilling south.

(CBS DETROIT) — An arctic air mass will impact all of southeast Michigan through Wednesday as the coldest temperatures of the winter so far arrive this week. A cold weather advisory is in effect ...

Arctic blast brings dangerously cold air and snow. Snow showers will be persistent and widespread, with near white-out conditions at times. Get the latest forecast from the FOX 17 Weather team.

Blast of Arctic air to bring dangerously cold temperatures, wind chills to New England this week By Ken Mahan and Dave Epstein Globe Staff and Globe Correspondent,Updated January 19, 2025, 4:17 p.m.

Rochester, N.Y. (WHAM) — Arctic air will cling to Western New York over the next few days. The Arctic air helped with the creation of some lake effect snow earlier Monday morning, with most ...