Downstrike

Seventeen hundred downstrikes of lightning later, destruction reigns over southwest Oregon.

Source: wiktionary

Lightning downstrikes became visible as it crossed Beekman Ridge south of Butte Falls.

Source: wiktionary

These storms typically arrive in the afternoon, building incredible cloud banks that can unleash rapid-fire lightning strikes. Cells often will hover and send forth dozens of downstrikes in a concentrated area, particularly in areas like the Valle Caldera.

Source: wiktionary

Besides forming new cores, arcs may also form branches, and "downstrikes" are liable to be particularly troublesome.

Source: wiktionary