I made my way to OKC on Tuesday, May 2, and with Bob C. and Bill S., rounded up five guests from Tour 1 and Tour 2 for a chase into northwestern OK. We left OKC really late, at 5 p.m., but that was not too much of a problem as the upper-level support was late and nothing had developed yet. I was hoping that the models which showed early evening development into extreme western OK would come to fruition. But, as we stopped at a convenience store for a snack around 7:30 p.m., there was still nothing to chase. Some high-based virga bombs were nearby, and there was some lightning with storms in extreme southeastern CO. We would just have to be patient.
A little after sunset, some stronger stuff went up near Guymon, and it was time to head towards that. By the time we got to Booker, TX, a nice (presumably elevated) supercell was not too far to our WNW, and we stopped to watch and photograph. Lightning was plentiful, and I managed some good shots which showed the excellent storm structure. A good-sized wall cloud persisted and was quite low to the ground, too. The storm chased us east and southeast, but never looked quite as good and compact again. We rolled back into OKC at 2 a.m.