AP Blue Sky Science: How does thunder form? Jul 10, 2019 Facebook Twitter SMS Email Print Save When lightning occurs, a large discharge of electricity causes the surrounding air to vibrate as it passes through the atmosphere to the surface. Tags Wire Field59 Blue-sky-science More video 2019 Football Preview: VCA looks to repeat as Coast Valley League champs, again Video - 2019 Football Preview: Gabe Espinoza takes over the head job at Orcutt Academy Video - 2019 Football Preview: John Beck talks about changes to Pioneer Valley Program Facebook Twitter SMS Email Print Save Most Popular The 2019 Central Coast Football Preview is here! Richard Fred Grossini Football: Lompoc set to host Simi Valley, Cabrillo takes on Bishop Diego in weekend season-openers Football, California's most popular sport, sees participation fall for fourth year in a row. How is the Central Coast affected? Don Oaks View All Promotions promotion 2019 High School Football Pick'em promotion spotlight Which season suits you best?