Southern California Braces for Historic Christmas Storm

A significant atmospheric river storm is currently hammering Southern California with heavy rain, strong winds, and substantial snowfall, leading meteorologists to anticipate it may become the region’s worst Christmas storm in recent memory. Flash flood warnings have already been issued for several areas, notably in regions impacted by previous wildfires, such as the Altadena burn zone.

A Multi-Day Rain Event

Rain began to fall across Southern California early on Wednesday and is predicted to continue for several days. Meteorologist Ariel Cohen from the National Weather Service’s Oxnard office noted the long duration of this storm event, indicating significant cumulative rainfall over multiple days. “This is a long-duration event, so we’re going to be having the cumulative effects of rain,” he stated.

Forecasters are particularly concerned about Wednesday, or Christmas Eve, as rainfall is expected to intensify. Flood risks may extend into Saturday, as precipitation is projected to linger throughout the week. “It might be best to stay indoors during this event,” Cohen advised, highlighting the danger of life-threatening flooding and the potential for dangerous rock and mudslides.

Immediate Threats and Evacuations

The storm has already wreaked havoc in Northern California, causing severe flooding and high surf that led to two fatalities. In response, officials across the state are on high alert and implementing evacuation orders, particularly for residents near burn scars. Specific areas affected include the Palisades, Eaton, and Kenneth fire zones.

Los Angeles County officials are making direct contact with residents of nearly 400 homes, giving them urgent evacuation orders due to the heightened threat posed by potential debris flows and mudslides. L.A. County Supervisor Hilda Solis emphasized, “It’s important we stay alert, stay vigilant and keep each other safe.”

In Altadena, residents prepared for the storm by loading up on sandbags. Local resident Jim Seraco shared his approach: “It’s better to be prepared than not.” Similarly, Dave Racs, who lost his home in a previous fire, is taking proactive measures on his property, fortifying it against potential flooding.

Preparing for the Storm

Across the region, the community is readying itself for the impending storm. Crews worked to provide sandbags, as residents sought to protect their homes. Racs, living in a camper on his property after losing his house, expressed resolve, stating, “You deal with what’s in front of you.”

The National Oceanic and Atmospheric Administration’s Weather Prediction Center has raised the flash flood risk to high for Wednesday, especially along the southern slopes of the Santa Monica, San Gabriel, and San Bernardino mountains. The Los Angeles Basin and surrounding areas are also included in this high-risk zone.

As the situation evolves, local meteorologist Kristan Lund warned of widespread flash flooding. Vehicles could be swept away, structures may take on water, and tree falls could lead to power outages and travel delays.

What to Expect Amid the Storm

Southern California is forecasted to receive 4 to 6 inches of rain from Tuesday through Saturday, with foothills and mountains potentially accumulating as much as 10 inches. The storm’s initial heavy rainfall is expected Tuesday evening, followed by sporadic bands of rain throughout Wednesday.

• Tuesday Evening into Wednesday Morning: Expect a burst of heavy rainfall with possible thunderstorms, though immediate flooding may not be a concern.
• Wednesday Daytime: Brief lulls in rainfall may occur between heavy bands, but rain will resume.
• Wednesday Evening into Thursday Morning: This period will likely see another surge in heavy rainfall, notably increasing the risks of urban flooding and mudslides.
• Thursday: Heavy rains will persist, further escalating flood concerns.
• Friday and Saturday: Rain showers may continue, with snow expected in mountainous regions, presenting additional hazards.

Safety Precautions and Resources

Authorities, including the California Governor’s Office of Emergency Services, are actively preparing for potential rescue operations. They’ve deployed resources such as ground and air vehicles for emergency support. Residents are strongly encouraged to stay home when possible and avoid all roadways, especially near flood-prone areas.

For those in low-lying regions, setting up sandbags is advisable to mitigate flooding risks. Los Angeles County has established several distribution points for sandbags. More information and resources are available through local government websites.

With widespread preparation and community vigilance, Southern California aims to weather the storm while ensuring the safety of its residents.