A Pacific storm system brought snow to our local mountains overnight and continued to drop rain on Southern California Monday morning, prompting a flash flood warning and creating dangerous driving conditions on local freeways.
Rainfall totals were mostly between a half-inch to an inch of rain across the coasts and valleys, according to the National Weather Service.
Heavy downpours prompted the Weather Service to issue a flash flood warning for the Sage, Calgrove and Sand Burn area about 1:30 a.m., the Santa Clarita Valley Sheriff’s Station posted.
Officials were concerned the heavy downpours could lead to flooding mudslides in the burn areas.
A number of freeways were temporarily shut down due to traffic collisions ahead of the Monday morning commute.
Two big rigs got together on the southbound 57 Freeway at Via Verde in San Dimas.
One of the big rigs jackknifed across the freeway lanes, prompting a closure and miles of backup.
In Pasadena, a crash on the eastbound side of the 210 Freeway led to a SigAlert being issued.
The eastbound lanes were expected to reopen about 6:15 a.m., according to the California Highway Patrol.
In Calabasas, a SigAlert was issued until 7 a.m. for a collision that blocked three lanes on the eastbound side of the 101 Freeway.
Another collision shut down the westbound 60 Freeway in Walnut, resulting in several miles of backup, video showed about 5:31 a.m.
The heavy rain also caused waters in the Los Angeles River to rise.
Four people became stranded on an island in the Atwater Village neighborhood about 2:30 a.m.
Rescue crews managed to pull all four victims to safety.
In the local mountains, snow fell overnight Sunday into Monday.
Video from Wrightwood showed snow falling on Highway 2 near Mountain High East.
The resort has been making snow recently in hopes of opening soon, according to its website.
Forecasters are calling for the stormy weather to move out of the region by Monday afternoon.