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In radar usage, a local maximum in radar reflectivity that undergoes a life cycle of growth and decay.

The rising portion of the reflectivity maximum is indicative of updraft, and the later descending portion is indicative of a precipitation downdraft. Cells in ordinary convective storms last from 20 to 30 min, but often form longer-lasting multicell convective storms. Cells in supercell storms are more steady and last considerably longer.
See also thunderstorm cell.

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