NWS issues severe thunderstorm and flash flood warnings in San Diego County
SAN DIEGO (KUSI) — A severe thunderstorm warning and a flash flood warning were issued Thursday afternoon in San Diego County as a strong storm developed over area mountains and deserts.
A severe thunderstorm warning was issued for east central San Diego County until 2:30 p.m. Thursday, The National Weather Service said. A thunderstorm developing over San Diego County’s mountains and deserts could bring quarter-sized hail and wind gusts up to 60 miles per hour this afternoon.
The storm developed at about 1:30 p.m. Thursday southeast of Highway 78 near Borrego Springs Road. The storm was slowly moving east, according to the National Weather Service.
A flash flood warning was also issued for southeastern San Diego County until 4:15 p.m.
Locations that are likely to be affected by flash floods include Pine Valley and Boulevard, Borrego Springs, Mount Leguna, Cuyamaca Rancho State Park, Julian, Shelter Valley, and Agua Caliente.
The heavy rain and thunderstorms that have stricken San Diego County for the past several days will mostly be confined to the mountains and deserts.
Drier air moving in from the southwest will provide relief from the wet and stormy weather starting Friday, but rain, thunderstorms and flash flooding are still possible Thursday, especially in the afternoon and evening, forecasters said.
But the humid conditions caused by the recent monsoonal moisture will begin to let up Friday, the NWS said. Fair weather will prevail beginning Friday through the middle of next week, bringing temperatures and humidity levels down to seasonal norms.