Silver Star, Montana

A small thunderstorm forming above the Ruby Valley, Silver City, Montana.
I was taking landscapes of the river at a fishing access site. When I was done, I started packing up my gear. I turned around and started to walk back to my car, when I saw this beauty!
Needless to say I scrambled to get everything back together and on the tripod!
I continued south on down the valley. After several hours, I returned to this spot, this 'small' thunderstorm developed into a full-blown gully washer. The river had risen at least 3 feet and bridges were starting to breach.