All cloud types
“Massive storm tower reaching max altitude limit”
Formation
Strong vertical convection
Weather signal
Thunderstorms, heavy rain, hail, tornadoes
Technical specs
Altitude1,000-60,000+ ft
AppearanceTowering cloud with anvil top, dark base
Fun factThe only cloud that can produce hail, thunder, and lightning.
uncommon
Etymology
Latin: 'cumulus' (heap) + 'nimbus' (rain storm)