Wall cloud - Towering cumulus with rain-free base.A wall cloud, a lowering of the cloud base underneath main stormupdraft, forms in this thunderstorm. Tornadoes can form out ot the wall clouds.
10/22/2018 8:33:44 AM
Date: 1982
Credit: NOAA Photo Library, NOAA Central Library; OAR/ERL/National Severe Storms Laboratory (NSSL)
Subject: Sky Scenes
Subject: Clouds