- A tall storm tower composed of a stream of vigorous updraft bubbles
- W013285Z
- In the midst of a web of thin Cirrus stands a tall storm tower composed of a stream of vigorous updraft bubbles packed closely together. This is a burst phase, an explosive period of intense growth. Air condenses at the low base and accelerates upward, forcing a continuous Pileus cloud cap to form in the bent flow above the crown.
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