D.C. region braces for rare Level 4 severe weather, with tornadoes possible

Forecasters warn the Washington, D.C. area could endure a rare Level 4 risk of severe storms Monday, including a fast-moving squall line with damaging winds (70–80 mph), hail, and possible tornadoes, mainly between 1 p.m. and 7 p.m.; the setup could trigger power outages, travel disruptions, and a sharp evening temperature drop, with watches/warnings likely to be issued as the day unfolds. Residents should secure outdoor items, stay alert for alerts, and seek shelter if warnings are issued.