MORE: Firefighters battle 2,000-acre Canyon Fire near Anaheim-Corona border
The store on Green River Road in Corona found that its parking lot had become a waypoint for residents of the hundreds of homes in the area that were evacuated due to the fast-moving fire.
In response, Ralphs kept its doors open all night Monday and offered its restrooms and food from inside the store to victims at no cost.
Firefighters and first responders were welcomed as well and were offered free breakfast and coffee on a table outside the store adorned with a sign that read, "Thank you to the firefighters, police & all the agencies involved. God bless you."