A Week of Relentless Storms: Heavy Rain, Local Flooding, and Mountain Snow Sweep Across Southern California

A Rapid-Fire Series of Storms

The third storm in just over a week swept across Southern California on Friday, drenching neighborhoods from Los Angeles, CA to the coastal communities of Orange County. Streets darkened before dawn as clouds thickened again, trapping moisture and setting the stage for another round of heavy rain.

Forecasters noted that the region is now on track for one of the wettest Novembers on record. Since November 13, downtown Los Angeles has received more than four times the typical monthly rainfall.

The morning began with alerts for flash flooding across roads, creeks, and small streams. Vehicles became stranded near Culver City, CA as water rose quickly over low-lying streets before sunrise.

Neighborhoods Swamped as Pond Overflows

In Huntington Beach, CA, rainwater surged through streets with the force of a fast-moving stream. A neighborhood pond spilled over, pushing water into residential roads and trapping parked cars in rising pools.

Residents described how quickly conditions shifted. “One moment the street was wet, the next it was moving like a creek," several said while watching water swirl around curbs and doorsteps.

The storm delivered those quick bursts of rain that overwhelm drainage systems, leaving entire blocks submerged within minutes.

Storm Pushes Into the Mountains

By midday Friday, the storm had shifted eastward into the mountains, leaving behind scattered sunshine along the coast. Higher elevations picked up fresh snow. Big Bear, CA measured about 3 inches (7.6 centimeters) by early afternoon, with additional accumulation expected heading into Saturday.

“It is certainly possible we are going to see a few inches overnight," said Sebastian Westerink, meteorologist at the National Weather Service in San Diego.

Despite intense rainfall bands, Westerink confirmed that no major widespread damage had been reported from the latest system.

A Welcome Soaking for a Drought-Prone State

California relies heavily on winter precipitation, and this November has delivered an exceptional surplus. State water officials noted rising reservoir levels thanks to well-above-average rainfall since October.

This month alone, downtown Los Angeles has recorded about 3.5 inches (8.9 centimeters) of rain. A typical November brings just 0.78 inches (2 centimeters) .

Farther north, Santa Barbara County has absorbed even more moisture. Parts of the Santa Ynez Mountains have measured more than 15 inches (38 centimeters) .

Atmospheric River Leaves Its Mark

A powerful atmospheric river earlier this month has already been linked to at least six deaths statewide. That same surge of moisture set the stage for the storm sequence now drenching the region.

Atmospheric rivers are long, concentrated bands of water vapor that travel across the sky like airborne rivers, channeling tropical moisture into mid-latitude regions. When these systems collide with the mountains of California, they release torrents of rain and snow.

Flooding concerns remain elevated in burn-scar regions where wildfire-damaged soil becomes unstable under heavy rain.

A Brief Break as the Storm Moves On

By Friday afternoon, the third storm drifted southeast toward the Baja California Peninsula and farther east across the mountains. Patches of sun reappeared over Los Angeles, but the week’s weather had already reshaped rainfall totals and flooded streets across the region.

On roadways still drying from the morning’s deluge, residents commented on the rapid pace of events.
“Three storms in one week," one motorist said while navigating deep puddles. “You could feel every one of them."