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Lowering wall cloud under main thunderstorm updraft.
Tornadoes will generally form in and ground the wall cloud.
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Image ID: nssl0051, NOAA's National Severe Storms Laboratory (NSSL) Collection
Photo Date: 1982
Credit: NOAA Photo Library, NOAA Central Library; OAR/ERL/National Severe Storms Laboratory (NSSL)
Category: Sky Scenes/Clouds/
• High Resolution Photo Available
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