Incoming rain brings mudslides threat to burn zones as crews battle Hughes Fire in Castaic

A brush fire erupted in the riverbed of the Santa Ana River in Jurupa Valley and quickly grew to about 38 acres.

The fire was reported around 5 p.m. Tuesday in the area of Van Buren Boulevard and Clay Street, near the Western Riverside County/City Animal Shelter, according to CalFire.

CalFire initially said the Clay Fire was at two acres and burning at a slow rate of speed in the river bottom. No evacuation orders were issued, but an evacuation warning was in place for a couple of hours.

CalFire announced around 11 p.m. that the evacuation warning had been lifted, but cautioned that crews were still working in the area. The fire is 40% contained.

Firefighters battled a brush fire in Jurupa Valley that grew to about 38 acres.

The L.A. County Medical Examiner has attributed an additional death to the Palisades Fire, raising the combined death toll from the Palisades and Eaton fires to 28.

As of Tuesday evening, the medical examiner has tied 17 deaths to the Eaton Fire and 11 to the Palisades Fire.

Arnold Schwarzenegger on Tuesday announced he's donating $1 million toward wildfire relief efforts in Los Angeles County, and the former California governor unveiled a new "L.A. Strong" T-shirt whose proceeds will also be donated.

In a social media post, Schwarzenegger said the $1 million will be divided between the Los Angeles Fire Department Foundation, the California Fire Foundation, and Habitat for Humanity of Greater Los Angeles.

"I don't like when companies or rich people ask their fans to make their donations for them," he wrote.

The T-shirt features an image of Schwarzenegger posing during his bodybuilding days.

"The shirt might look familiar - it's based on an LA classic they sell to tourists on the Venice boardwalk, except I can use my image," he added.

La Cañada Flintridge was one of several communities that was forced to evacuate during the Eaton Fire, and on Monday residents threw a pop-up appreciation party for fighters who were pre-deployed this week ahead of another round of powerful winds.

"I've been doing this since 1997 and I've never seen a show of support like this," Cal Fire Battalion Chief Joshua Rivers told ABC7.

The impromptu event was organized at La Cañada High School, where pizza, ice cream, snacks, and even takeout food from a Porto's Bakery were served in the gymnasium.

Community members showed their gratitude to pre-deployed firefighters by organizing a pop-up appreciation party -- complete with pizza and ice cream -- at La Cañada High School.

"The whole city -- everybody's trying to help," said Cynthia Xue, one of the residents who donated food.