Overview
- The Mid-Atlantic, including Washington, D.C., spent Monday under a rare Storm Prediction Center Level 4 severe risk with forecasts for hurricane-force gusts and strong, long‑track tornado potential.
- By Monday night the squall line moved offshore and the severe threat eased, with a sharp cold blast following the front and freeze alerts extending into the South.
- Blizzard conditions persisted across Wisconsin and Michigan, where snow totals reached two to three feet and additional heavy snowfall targeted Michigan’s Upper Peninsula.
- Disruptions mounted nationwide, with more than 4,500 flight cancellations, widespread power outages topping half a million customers, and early school dismissals across multiple states.
- Out West, an early-season heat dome is expected to produce record highs and triple‑digit temperatures in parts of California, Arizona, and Nevada under NWS heat watches.