June 2012 North American derecho

June 2012 Derecho

Composite radar image as the storm moved from Indiana to Virginia
Date(s)	June 29–30, 2012
Duration	18 hours (10:00 AM-4:00 AM)
Track length	800 mi (1,290 km)
Peak wind gust  (measured)	91 mph (146 km/h; 40.7 m/s) (Fort Wayne, Indiana)
Largest hail	2.75 in (7.0 cm) (Bismarck, Illinois)
Fatalities	22 total
Damage costs	$2.9 billion[1]
Areas affected	United States Midwest, United States Mid-Atlantic
Part of the Summer heat wave of 2012 derecho series Summer 2012 North American heat wave 2012 North American drought Late July 2012 North American derecho

The June 2012 Mid-Atlantic and Midwest derecho was one of the deadliest and most destructive fast-moving severe thunderstorm complexes in North American history. The progressive derecho tracked across a large section of the Midwestern United States and across the central Appalachians into the mid-Atlantic states on the afternoon and evening of June 29, 2012, and into the early morning of June 30, 2012. It resulted in a total of 22 deaths, millions of power outages across the entire affected region, and a damage total of US$2.9 billion which exceeded that of all other derecho events aside from the August 2020 Midwest derecho (estimated US$11 billion). The storm prompted the issuance of four separate severe thunderstorm watches by the Storm Prediction Center. A second storm in the late afternoon caused another watch to be issued across Iowa and Illinois.