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15 August 2020
NWS Office Issues First Ever Fire Tornado Warning
Pyrocumulonimbus. That’s the term for a cumulonimbus cloud that develops when a large wildfire heats the air up so much that a giant cloud develops. They can develop even if the atmosphere is stable since the forcing is all from the heat of the fire below. If there is wind shear in the atmosphere, they can rotate and sometimes produce a tornado. We’ve seen quite a few of these over …