RELATED | Maria Quiban's Weather Forecast
A flash flood watch will be in force from 2 p.m. through this evening in the Antelope Valley and the San Gabriels in Los Angeles County.
"Any thunderstorm that develops will move slowly,'' warned an NWS statement. "This will concentrate the storm's rainfall over a smaller area, leading to a greater chance of flash flooding.''
Besides the mountains and Antelope Valley, the Cuyama Valley -- which goes through Ventura, Kern, Santa Barbara and San Luis Obispo counties -- was cited by the NWS as an area where slow-moving thunderstorms were expected.
"A flash flood watch means that conditions may develop that lead to flash flooding,'' noted the NWS statement. "There is a potential for dangerous and sudden inundation of roadways by swift-moving water. There is a potential for dangerous torrents of water moving down steep terrain.''
Southland temperatures were expected to be in the 70s and 80s Friday, reaching 90 in some areas.
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