In cumulonimbus clouds during conditions where graupels are repeatedly wetted and then injected back toward high altitudes by strong updrafts, very large graupels called hail result. (britannica.com)
Fire whirls arise when superheated air above a wildfire drives strong updrafts and downdrafts that get sheared by the wind, causing them to twist into a vortex that funnels flames upward. (discovermagazine.com)
If strong updrafts of wind make that altitude separation big enough, an electric current flows to cancel out the difference in charge. (sciencedaily.com)