A cumulonimbus cloud soars over Winchester Tuesday (Dave Stoll)

Here's his description: “Taken [Tuesday] evening in Winchester. This is the cell that prompted the NE Frederick and Clarke Co VA warnings early this evening. Photo taken facing east. Storm is about 15 miles east of my location traveling north to south at 10mph.”

The photograph shows off the characteristic mushroom shape of the cloud top along with the anvil, spreading out laterally in the background.