Heavy rainfall in Southern California caused flooding and evacuations in Ventura County due to a storm system moving along the California coast. The Oxnard Civic Center received over three inches of rain an hour, leading to an evacuation order and warnings in parts of Port Hueneme.
The city of Oxnard reported that many streets and intersections were impacted by standing water, and the fire department advised residents to stay off the streets until floodwaters receded. Tornado warnings were issued for parts of Ventura County, but no tornado was detected.
The storm is expected to move off the Southern California coast by Thursday night, creating a prolonged and potentially significant rainfall event in Santa Barbara, Ventura, and Los Angeles counties. Rainfall rates of 0.3 to 0.6 inches per hour are forecast, with potential for flash flooding, mudflows, and debris flows. People in the Santa Barbara area were warned to stay off the roads due to heavy rain.
The cloudy, cool, and wet weather is expected to continue until at least Friday, with the storm moving over the southwest US and northwestern Mexico by Saturday. After the storm passes, Southern California is expected to dry up, with warmer temperatures forecast for Christmas Eve and Christmas Day.