Environmental Polar Vortex to Once Again Grip Midwest, Northeast by Kristina Pydynowski on February 25, 2014 Kristina Pydynowski Author More in Environmental: People Outside Will Be Injured: Severe Thunderstorms Strike Park Forest March 31, 2026 Park Forest Officials Urge Residents to Protect Pipes as Coldest Air of the Season Continues December 14, 2025 Park Forest Workshops Join Global Effort to Prevent Bird Collisions August 21, 2025