became a prolific tornado producer and, over a four hour period, generated no less than 15 individual tornadoes... possibly more. That morning our chase team (Michael Laca, Jim Leonard, Ray Walker, Eric Baker and Max Hagen) began the day in Hutchinson, Kansas and had opted to forego a northern chase target in Nebraska, in favor of an area of less vertical shear but deeper moisture to the south in Oklahoma. As we headed south on I-35 we quickly noticed the rapidly developing tower well to ...