Tornado outbreak of March 2–3, 2012

On March 2 and 3, 2012, a large and deadly tornado outbreak occurred over a large section of the Southern United States into the Ohio Valley region, spawning up to 70 tornadoes in its wake. A moderate risk of severe weather was issued for March 2 a day in advance for a large area from near Tuscaloosa, Alabama to Dayton, Ohio as an intense storm system tracked across the region in a very high shear environment, and intense tornadoes were possible.

Source: Wikipedia — Tornado outbreak of March 2–3, 2012 (CC BY-SA 4.0)