Thunderstorms prompt flash flood warnings for Riverside, San Bernardino counties

Date: 2021-09-10 00:00:00 Thunderstorms over the mountains across southern California were prompting flash flood warnings on Thursday afternoon. The National Weather Service in San Diego has issued a flash flood warning for portions of Riverside County until 7:45 p.m. Some locations that could experience flash flooding include northwestern Palm Springs, Hwy 243 between Banning and Idyllwild, Idyllwild-Pine …

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