Last night just before dusk the weather service posted a severe thunderstorm warning (I get them on the computer). It was mostly out of my area and to the northeast so I didn't pay much mind as such warnings are a daily occurrence.
But then I looked out the office window and saw a huge, angry cloud rushing west to east. I went out with a camera. The picture shows a static mass, but it was far from that. It was moving very fast, swirling and roiling as it went. Then I heard a roaring of the wind and a low cloud came at me out of the southwest, more or less tangential to the big boy. It was dark and turbulent right down to the ground, roaring like a freight train, and shredding branches off the cottonwoods and scattering them around. I fled to the house, prepared to get the dogs and head for the shelter. But it passed as quickly as it came.
The lower pic was taken at the same time off to the east. Looks like a funnel cloud was trying to form but it never turned into anything.