Atmospheric river slams California with deadly flash flooding, vicious surf from days of record rain

The heaviest rain totals have come across just northwest of Los Angeles near the city of Oxnard and also near the Pacific Palisades burn scar where some mudslides and flash flooding was reported.

SAN FRANCISCO – A deadly atmospheric river has slammed California with days of heavy rain, strong wind gusts and rough surf. The storm system has brought several months' worth of rain to Southern California in the span of just a few days.

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The peak of the multi-day threat was Saturday where millions faced a level 3 out of 4 flash flood threat across California. 

The heaviest rain totals have come across just northwest of Los Angeles near the city of Oxnard and also near the Pacific Palisades burn scar where some mudslides and flash flooding was reported. 

In Carmel, Ca., a father drowned along the coast trying to save his 7-year-old daughter who was dragged out to sea by a 15-20 foot wave and later found dead, according to the Monterey County Sheriff's Office.

Further north in the Sacramento area, a 71-year-old male delivery driver stopped his car on the Pleasant Grove Creek Bridge.

According to Sutter County officials, the bridge had 2-3 feet of water flowing over the road with heavy rain, and pushed the man's Mazda off the bridge and into a nearby creek, partially submerging the vehicle.

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The man was able to call 911 for assistance, but by the time personnel arrived, the car was pushed further down the creek and was fully submerged.

The man was pulled from the car unresponsive and was declared deceased after attempts to revive him.

Near Imperial Beach, the Coast Guard reported that four migrants died due to their vessel capsizing Friday night. 

By late on Saturday night, the bulk of the heavy rain started to come to an end and moved east across southern Nevada including Las Vegas.

WHAT IS A WILDFIRE BURN SCAR AND HOW COULD THEY HAVE LASTING IMPACTS?

According to the National Weather Service, ash from wildfires creates burn scars – a water-repellent coating that prevents the ground from absorbing water and causes the area to be predisposed to flash flooding and debris flows.

Evacuation warnings were issued for areas around the Palisades, Franklin, Easton and Canyon fires, amongst other locations. By Sunday morning, all evacuation warnings had been lifted. 

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All told, parts of the California coast, including San Francisco and Los Angeles, could see 3–5 inches of rain through Monday. Typically, Los Angeles averages just over 6 inches of rain from November to January.

San Diego could see 2–3 inches of through Sunday. On average, the area only sees an average of just over 4" of rain from November to January.

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The upper-level low will start to weaken by Sunday, but another storm will brush Northern California, renewing flash flood potential. 

By Monday the storm will continue to move south and only provide a chance of rain for portions of Southern California.

Meanwhile, winter weather alerts have been posted for the Sierras. Some of the highest mountain passes have already closed for the season.

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Wind gusts along ridgetops in the Sierras could exceed 100 mph.

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