heat lightning

A flash of heat lightning lit up the sky over the mountains and there was a low rumble of thunder.

She recalled certain images: heat lightning traveling from cloud to cloud, tall grasses, gas flares on the horizon, droves of red-winged blackbirds.

Extremely dry ground and hotter than average temperatures, combined with heat lightning and strong winds, have caused the fires to spread aggressively.

When word got out about Mr. Sloan, excitement would spread like heat lightning across the islands.

The afternoon clouds look like mountain ranges, enhancing the lush Irish topography, and later there is heat lightning in the distance, which lights up the horizon like an old projector.