Los Angeles County Drenched: How Many Inches Of Rain Fell?

LOS ANGELES, CA — The biggest storm to hit Southern California this year drenched Los Angeles County this week, causing floods, mudslides and dangerous conditions.

Most of LA County’s coastline saw between 1 and 3 inches of rain during the storm this week. The San Gabriel Valley saw between 2 to 5 inches and downtown LA set a record for rainfall at 2.87 inches of rain, breaking a record of 2.71 inches set in 1954.

Mount San Antonio in the San Gabriel Mountains logged the most rain in the county, recording 6.27 inches of rain, according to NWS. The Eaton fire burn scar area saw around 4 inches of rain and the Palisades fire burn scar area saw around 2 inches.

Over the last three days, Northridge got a total of 1.77 inches of rain, Ballona Creek saw 1.82 inches and the University of Southern California saw 2.31. inches according to LA County Public Works.

So far this season, downtown LA has gotten a total of about 5 inches of precipitation beginning on Oct. 1 according to Public Works.

The recent storm brought a variety of dramatic weather conditions throughout the county, including a major mudslide that swept up an SUV into the ocean and a collapsed roof at a Smart & Final in Azusa.

Following the downpour, LA County beaches were put under a health advisory as high levels of bacteria are expected for at least 72 hours after significant rainfall.

“Bacteria levels can increase significantly during and after rainstorms, as contaminants within the runoff enters the ocean,” according to the LA County Department of Public Health. “Elevated bacteria levels in ocean water may cause illness, especially in children and the elderly.”