Big Goose Storm
It had been 7 months since I've even heard thunder here in Wyoming. But early May finally brought the first decent thunderstorm of the year. Throughout the evening clouds built up over the Bighorn Mountains before the storm descended and hit Sheridan after 8PM. The high moisture content combined with late evening sunlight behind the storm gave the clouds a greenish-blue tint. The storm wasn't severe, but it brought frequent lightning, small hail, and a drenching rain that made the already flooded Big Goose Creek rise even higher. The photogenic shelf cloud ahead of the rain core showed some impressive structure as it was sculpted by wind shear above.