On April 23, 2018 a large outbreak of tornadoes impacted Ohio, extreme east Indiana, and far north Kentucky. It is the largest outbreak in Ohio history, and will not soon be forgotten. The event was well forecast, as models picked up on the event 5 days in advance. On the morning of the 23rd, the SPC had a high risk up for much of Ohio, extreme east Indiana, and north Kentucky. A rare 45% significant tornado risk was centered over central Ohio. A large outbreak of significant tornadoes was anticipated. Very strong shear, widespread MLCAPE values of 3,000 j/kg, good lapse rates, low 70°s dew points, and temperatures in the low 80°s set the stage for the event. Supercells fired along a cold front in eastern Indiana before 1:00 PM that day, and initially spawned a few weak and short lived tor