Arctic Blast Threatens Coldest US Inauguration in Four Decades

• An Arctic air mass to drop U.S. temperatures by up to 40 degrees, risking extreme cold.
• The National Weather Service warns of hypothermia risk as wind chills hit -55°F.
• Frost quakes may occur even as far south as the Gulf Coast with the deep freeze.
• Central U.S. experiences record lows, with advisories from Montana to northern Texas.
• Heavy snow and ice from the Arctic front to disrupt the Northeast and mid-Atlantic travel.
• Outdoor event attendees warned as Central Plains wind chills fall below zero.
• Increased demand for cold weather gear, like hand warmers, due to Arctic conditions.