- Lift over a mountain initiated the growth of this Cumulus Congestus
- W004124Z
- In a conditionally unstable atmosphere, something needs to initiate condensation before storms can maintain themselves. Here, that extra push is provided by lift over a mountain. The large Cumulus Congestus cloud above the peak is becoming a Cumulonimbus as its top freezes and flares forward. Without the mountain, the sky would have remained clear.
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