cumulonimbus clouds aka storm clouds
The Shadiest One was created in 1997.
in the valley
The comparative from of shady is shadier. The superlative form of shady is shadiest.
Cherry Springs State Park, Pennsylvania
A "Nimbus Cloud" is a cloud that produces precipitation. Most likely a Hail or Snow Cloud.
It's called in-cloud or cloud-to-cloud lightning.
There often is. Most tornadoes are associated with a wall cloud but not all.
The cumulonimbus cloud.
Most of the volume in an atom is occupied by the electron cloud. Most of the complex reactions of the atom occur in the cloud.
Most likely it is a funnel cloud. If it touches the ground then it is a tornado.
An electron cloud is a visual model of the most likely locations for electrons in an atom.
Rising convectively, a cumulus cloud is the most common.