A slow moving thunderstorm dumping heavy rain and hail trundles northeast in the background as a BNSF empty sand train rolls through the siding at Broomfield, Colorado where they will wait to go into Denver on May 18, 2018.
For the train and storm chaser. Trains with thunderstorms, dark clouds, rain, lightning, hurricanes - tropical storms, funnel clouds, storm light, rainbows, and snow storms.