Snow shut down a key interstate north of Los Angeles for hours on Monday while weekend downpours doused wildfires across Southern California in the first significant storm of

More rain fell Monday on parts of Southern California after causing mudflows over the weekend, helping firefighters but boosting the risk of toxic ash runoff in areas scorched by Los Angeles-area wildfires.

One of the latest, the Hughes Fire in the Castaic area, has prompted evacuation orders for tens of thousands of people. ABC News has kicked off "SoCal Strong" (#SoCalStrong), highlighting the impacted communities and offering fundraising opportunities for victims of the fires.

The Eaton and Palisades fires have consumed more than 37,000 acres of homes, businesses and landmarks in Altadena and Pacific Palisades.

Black residents of Altadena were more likely to have their homes damaged or destroyed by the Eaton fire and will have a harder financial road to recovery from the disaster, according to research released Tuesday by UCLA.

A new UCLA study found that the Eaton fire disproportionally impacted Altadena’s Black community and that systemic inequality and redlining contributed to fire vulnerability. The study, released on Tuesday,

Black residents of Altadena were disproportionately impacted by the Eaton Fire’s devastation, both in the concentration of households within the burn area and the percentage of homes that were destroyed or sustained major damage,