Eric Nguyen's Homepage of Meteorology and Storm Observing!

August 10, 2004

Eastern Colorado

"When we reached the storm it was still stationary, north of the front with strong east winds feeding into it. It was LP in nature and began to lean over with time. It had a rock hard cylinder updraft at the beginning, which was clearly rotating quite strong. Occasionally we saw long rotating tubes on the edge of the updraft that would rope out and die. When we thought the storm was about to die, it finally began to move southward and probably encountered some more unstable air, which caused the storm to rapid back-building and re-intensify. That's when the storm began to develop a round smooth mother-ship looking updraft with a well defined RFD notch. There were funnels that developed and small dust whirls underneath the wallcloud / funnel which we considered too weak to categorize it as anything more then a dust whirl."
August 10, 2004