All gases expand when the temperature increases, so when lightning superheats the air at just a fraction of a second, the air expands so rapidly that it compresses the air in front of it. Thunder is ...

An intense thunderstorm system moved into the Coachella Valley from northern Mexico on Tuesday morning, Sept. 2.

A bolt of lightning heats the air through which it travels practically instantaneously to about 50,000 degrees F. Such extreme heating causes explosive expansion of the air followed by rapid cooling ...

A late-summer monsoon has delivered hundreds of thousands of lightning strikes across California, including in the High ...

AUSTIN (KXAN) – Have you ever wondered why thunder can have different sounds? A crack versus a rumble? Startlingly loud versus calmingly low? Let’s dive in … The basics: what is thunder? Electrical ...