- A severe storm is being born as a small Cumulonimbus pulls together
- W030257S
- A long-lived severe storm is being born here as a single, small Cumulonimbus cloud pulls together. The rain-free base at left has a series of cloud towers emerging from it in a stair-step pattern, indicating continuous updrafts in one place. Each one emerges stronger and taller than the previous one, with an occasional lull when outflow briefly slows growth or shifts it back slightly.
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