- Cloud types, Cb: two small Cumulonimbus clouds (pulse storms)
![Cloud types, Cb: two small Cumulonimbus clouds (pulse storms)](http://www.skyartstock.com/peas/W010438Z-SKYART.jpg)
- W010438Z
- Cloud types, Cb: two small Cumulonimbus clouds stand tall along a summer wind-shift line at sunset. These are pulse storms, which go up, drop a downpour, then collapse and disintegrate.
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