A large slide dumps a house into the Russian River during heavy rain Tuesday in Sonoma County. Tayfun Coskun/Anadolu via Getty Images

An atmospheric river brought heavy rain, serious mountain snow and strong winds to California that flooded roads and rivers and triggered landslides, with at least two storm-related deaths reported – and more rain is on the way.

The first storm, which impacted a large swath of the state, including Los Angeles, San Francisco and Sacramento, tapered off on Wednesday.

Northern California bore the brunt of the impacts, with reports of landslides and flooding in urban and low-lying areas. Two people were reported dead in Sonoma County due to the flooding, the sheriff’s office said.

Rain coated Southern California’s Los Angeles County through Wednesday morning, maintaining the risk for debris flows and mudslides in areas still recovering from the devastating recent wildfires.

Another atmospheric river-fueled storm with up to an inch of rain, which could renew those threats, arrived Thursday. But it’s expected to be less intense than previous storms, and the rain would be largely beneficial for the parched landscape to reduce the fire threat.

Floodwaters cause road closures during heavy rain Tuesday in Forestville, Sonoma County, California, as an atmospheric river hits Northern California. Tayfun Coskun/Anadolu via Getty Images

The heaviest rainfall is forecast between midday Thursday and early Friday morning.

Here are the latest impacts:

House swept into Russian River amid relentless storms

Northern California bore the brunt of the storm Tuesday when a rain-saturated hillside in Forestville gave way, sending a house sliding into the Russian River near the Forest Hills Bridge, according to CNN affiliate KGO. The collapse was caused by heavy downpours and unstable soil.

California Highway Patrol officers arrived at the scene around 12:30 p.m. to find land and trees sliding into the river, with the home already gone, KGO reported.

“As we all know, the Russian River is a beautiful place, especially during the summer,” Sgt. Juan Valencia of the Sonoma County Sheriff’s Office told the outlet. “But when we get these heavy rains, it’s very unpredictable.”

Authorities confirmed the home dragged into the Russian River had been unoccupied at the time of the collapse, KGO reported.

Heavy rainfall and flooding

The storm has unleashed staggering rainfall totals, with Palmetto, some 17 miles east of Chico, recording 24.4 inches since Friday and areas like Sweetbriar and Brush Creek, 50 miles north of Redding, nearing or exceeding 22 inches.

Redding’s 4.33 inches of rain on Sunday was its wettest February day on record, surpassing a century-old record set in 1914. San Francisco also broke a daily rainfall record Tuesday with 2.53 inches, eclipsing a record for the day set in 1887.

The Russian River in Guerneville hit moderate flood stage early Wednesday, threatening homes, businesses and resorts in low-lying areas. Meanwhile, the Napa River, which had been rising rapidly Tuesday, peaked just over 24 feet before flood warnings were canceled.

Officials warn high water levels could persist as streams and creeks continue draining into major rivers, keeping many areas at risk.

Flood watches are in place north of the Bay Area from Thursday morning to Friday afternoon, where lower elevations could see up to an inch of rain and higher elevations could see two inches. These numbers aren’t as high as earlier storms – but soils are already saturated, so it wouldn’t take much to cause more flooding.

Landslides and road closures add to chaos

The relentless rain has triggered landslides across California, forcing partial and full closures of key roadways. While crews work to assess damage and clear debris, some closures remain indefinite.

California State Route 70 is among the most severely impacted, as a landslide near Quincy has closed indefinitely the highway between Jarbo Gap and the Greenville Wye, two mountain towns east of Chico and the Butte Valley.

North of Greenville, California State Route 89 is operating under one-way traffic control due to landslide debris, while crews work to stabilize the area.

In Stockton, flooding temporarily shut down the southbound lanes of California State Route 99 between Turner and Victor Road. Although the highway has since reopened, officials continue to monitor conditions closely.

Heavy snowfall paralyzes mountain travel

The Sierra Nevada has been buried under heavy snowfall, with multiple locations reporting more than a foot of snow – peaking at 32 inches of snow at California’s Donner Peak.

Winter weather alerts are in place across the mountain range until Friday, when an additional one to three feet of snowfall is possible. Alerts are also in effect for parts of Cascades through Thursday morning.

The storm has also brought significant snowfall to other parts of the West, including Idaho and Montana, where some areas have reported totals of 1 to 3 feet since the weekend.

This storm will track across the country through the remainder of this week and into the weekend, reaching the Northern Rockies by late Friday. It will move to the Midwest on Saturday, then parts of the Mid-Atlantic that night. Snowfall in the Northeast will last into Sunday.