MONROVIA (CBSLA) – Many Angelenos woke up to unusual summer rainfall Monday, as forecasters warned of the risk of flash flooding throughout the day across the Southland, especially in burn areas.
A flash flood watch was in effect through 8 p.m. Monday for Los Angeles County mountain areas including Lancaster, El Monte, East Los Angeles, Topatopa Peak, Reyes Peak, West Covina, Alhambra, Falling Springs, Pasadena, Pomona, Palmdale and Whittier.
Excluded from the flood watch was the Santa Monica Mountains, the San Gabriel Valley and the Ventura County Mountains.
“Scattered showers and thunderstorms, some capable of producing heavy downpours with rainfall rates up to an inch per hour are possible,” the National Weather Service wrote.
A storm cell moving through the region could bring heavy rain that causes flash flooding and debris flows in burn areas, the NWS said, including the burn scars of the Bobcat Fire in the Antelope Valley foothills, the Dam Fire in the Angeles National Forest north of Azusa, the arson-sparked Ranch Fire north of Azusa and the Lake Fire near Lake Hughes.
There’s also the risk of flash flooding for neighborhoods below the El Dorado Fire burn scar in Yucaipa in San Bernardino County. Evacuation warnings were issued by Cal Fire from 8 a.m. to 8 p.m. Monday.
There is no fire or Evacuation order for the Yucaipa area. There is an evacuation warning for the area of the El Dorado burn scar tomorrow 8am to 8pm for potential flooding. Sorry for the confusion, glitch in the alert system.
— CAL FIRE BDU (@CALFIREBDU) July 26, 2021