June 11 was the first day of tour 6. We debated on whether to stay in Colorado or head north. Surface flow and moisture was a bit better north into southwest Nebraska. And after a call from Dave Gold, north we headed. We arrived on the scene near the Scottsbluff National Monument to see a beautifully striated rotating supercell sucking dirt off the top of the monument. This storm did all it could to produce a tornado, even with a strongly rotating lowering on the northeast side of the storm. But it never could quite focus long enough to produce. However the structure was incredible!!!