NBC 7 San Diego
NBC 7's Interactive Radar map showing rainfall over east central San Diego as of 5 p.m. Saturday.
The National Weather Service (NWS) issued a flash flood warning for parts of San Diego County Saturday.
As of 7:45 p.m., the NWS said the warning would remain in effect until at least 8 p.m. Areas impacted by the warning include San Diego moutain and desert areas.
The NWS says precautions should be taken in these warning areas.
This includes motorists avoiding driving their vehicles into areas where the water covers the roadway. The depth of the water may be greater than it looks ad could prevent vehicles from traveling safely across. Instead, drivers should move to higher ground.
At around 4:40 p.m., California Highway Patrol officials said a 3-foot boulder washed up on the northbound lanes of Old Highway 80 creating a traffic hazard.
Saturday’s flash flood warning came on the heels of a severe thunderstorm warning that lasted through 4:30 p.m. in east central San Diego. Severe thunderstorms capable of producing hail and strong, dangerous winds hit Borrego Springs and Shelter Valley earlier in the day.
On Friday, a storm cause a power outage in Borrego Springs that left more than 1,200 people in the dark.
Check for weather updates using NBC 7's interactive radar here.