Lightning brightens the early morning sky over San Luis Obispo on Sunday, July 19.
Lightning brightens the early morning sky over San Luis Obispo on Sunday, July 19.
Lightning brightens the early morning sky over San Luis Obispo on Sunday, July 19.

Powerful electrical storm over SLO County a lesson in what causes lightning

July 25, 2015 05:41 PM

About Weather Watch

John Lindsey

@PGE_John

John Lindsey writes Weather Watch, a weekly column for The Tribune. He is PG&E's Diablo Canyon meteorologist and media relations representative. Email him at pgeweather@pge.com .