5-18 featured a dual dryline structure across portions of S central KS. After sitting in Greensburg, KS for nearly an hour, we got suckered south to an area of clumpy towering cumulus that were forming in steeper lapse-rate air coming out of the TX/OK panhandle area. Once this convection crossed the boundary into substantially greater surface theta-e values, we were interested to see what would happen. Turned out that a large cold pool was already established before moving into this area and all we were able to view was an outflow dominant cluster of sub-severe storms. We made a decision to head south for the better environment, yet a storm formed north of Greensburg that produced a nice tornado. Storm morphology really killed us this day.