A flash flood warning was issued Sunday evening for San Bernardino County and parts of eastern Los Angeles County as storms caused torrential rainfall across the region, the National Weather Service announced.
In LA County, San Dimas, Glendora, Pomona, La Verne and Claremont are among the areas expected to see flash flooding, the warning said. The warning is in effect until 9 p.m.
In San Bernardino County, where the warning is in effect until 9:45 p.m., affected areas include San Bernardino, Rialto, Highland, Muscoy, Crestline, Devore and the I-15 Freeway through Cajon Pass.
Between 0.75 and 1.25 inches has fallen in San Bernardino County, and officials expected an additional 0.75 to 1 inch.
Most flood deaths occur in vehicles. People in affected areas are advised to exercise caution around streams, crevices, highways, streets, underpasses and other poor drainage and low-lying areas.