A two-day storm that slammed into Southern California this week resulted in closed roadways, numerous traffic collisions and increased concern for areas scorched by recent wildfires.

The storm arrived in Ventura County on Wednesday and provided steady rain to the region through Thursday morning before moving into Los Angeles County.

Just before 8 a.m. Thursday, the intensity of the storm prompted the National Weather Service to issue a flash-flood warning for the Woolsey and Hill Fire burn areas. The warning expired at 10:45 a.m. with no major issues reported.

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The storm also provided a boost to seasonal rainfall levels, pushing some regions of Ventura County above normal levels.

Rainfall totals exceeded expectations by about half an inch to 1 inch, according to meteorologist Joe Sirard of the National Weather Service. The rain was expected to end by Friday and not return for at least a week, according to forecasts.

According to the Ventura County Watershed Protection District, the Lake Sherwood area received the most rainfall during storm, 2.12 inches. Most regions in Ventura County received more than 0.70 inch of rain during the storm.

Only Oxnard and Seacliff, an area near the Santa Barbara County line, received less, according to figures provided by the district.

As of 3 p.m. Thursday, Lake Sherwood had received 146.7 percent of its normal rainfall amount for the season, which begins in October. Most regions of Ventura County had received more than 75 percent of their normal rainfall amounts to date.

The worst of the storm came Thursday morning. Around 7:40 a.m., the California Highway Patrol reported that a vehicle had been totaled after a rock fell off the hillside near the roadway south of Mugu Rock.

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The storm also caused mud and debris flows along Pacific Coast Highway south of Ventura County, prompting the closure of the roadway for several hours Thursday. At least one vehicle became stuck in the mudslide.

Caltrans crews managed to clear the highway by noon, although the right southbound lane of PCH near Leo Carrillo State Beach remained closed for mud cleanup.

In fire-ravaged Malibu, city officials reported no injuries or property damage. No evacuation orders were issued.

Mud and debris were not the only hazards for drivers in the region as CHP and local fire personnel responded to dozens of traffic incidents Thursday during the morning commute.

One incident reported around 7 a.m. in Moorpark sent a Ventura County sheriff’s deputy to a hospital with minor to moderate injuries.

The crash was under investigation and all involved parties were cooperating with authorities. Sheriff’s officials said the incident was possibly rain-related.

In Simi Valley, CHP officials reported that a roadway was blocked by a boulder the size of a car.

The storm also caused issues in higher elevations, where snowfall blanketed roadways.

Motorists were urged to use caution on mountain passes, where up to 6 feet of snow was predicted at higher elevations.

On Interstate 5, snowfall on the Grapevine late Thursday morning closed the area to traffic for several hours.

Issues were even seen at airports Thursday as a plane skidded off the runway in Burbank.

Nobody was hurt when a Southwest Airlines plane from Oakland skidded off a wet runway as it landed during downpours at Hollywood Burbank Airport. The plane came to a stop in a graded area designed to slow aircraft that overshoot the runway, the Federal Aviation Administration said.

“As we landed, you could feel the brakes,” passenger Grant Palmer told KABC-TV. “Then I started noticing the plane going sideways.”

Palmer said he was prepared to tuck into an emergency posture, but his unflappable co-worker continued writing emails during the rough landing.

Staff writer Jeremy Childs and Associated Press reports contributed to this story.