SAN DIEGO -- The San Diego County Department of Environmental Health is warning people to stay out of the water at local beaches following Friday night's thunderstorm.
Officials issued a general advisory Saturday for all county beaches -- especially those near storm drains, creeks, rivers and lagoon outlets.
Urban runoff can create heightened levels of bacteria in the water after a rainstorm, according to county officials. Beachgoers were asked to avoid the water for at least 72 hours after the storm.
No signage is posted for a general advisory.