- A cluster of Cumulus Congestus clouds building into a storm
- W031372S
- Clouds building into a storm. Accelerated growth in a Cumulus Congestus cluster spells an imminent storm cloud. Continuous bubbling yields ever taller towers and the growth rate is beginning to offset wind shear and evaporation. Each tower carries moisture aloft, priming the atmosphere for less erosion of successive towers until a Cumulonimbus storm cloud can get established.
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