Dangerous, coldest air of the season expected across Northeast this weekend

Dangerous, coldest air of the season expected across Northeast this weekend

Amid a winter of relentless Arctic conditions, the most powerful polar punch of the season is expected this week across the Northeast, with dangerous wind chill temperatures approaching 25 degrees below zero in some places. Powerful winds of the northwest will usher in air associated with the polar vortex. National Weather Service (NWS) offices are keeping a close eye on the weather setup and could issue Extreme Cold Warnings — rarely seen in the Northeast.