A slow-moving storm system is still on track to soak Southern California with significant rain this week.

After relatively mild weather on Monday and Tuesday, “business” begins to pick up on Wednesday across the region, according to the National Weather Service.

There will be increasing chances of rain throughout the day, and, by Wednesday evening, most areas can expect to receive around a quarter inch of rain, NWS says.

Precipitation from the atmospheric river event continues through Thursday, Friday and into Saturday morning.

“It looks like Friday will be the wettest day of the week when we’ll see moderate to heavier rainfall, especially in the foothill and valley communities,” says KTLA’s Kaj Goldberg.

The updated forecast calls for one to 1.5 inches of rain along the coast and in the Los Angeles basin through Saturday. Valleys and foothills can expect 1.25 to 2 inches, and mountains will receive 2 to 2.5 inches of rain and snow above 8,000 feet.

NWS Storm Bulletin
The National Weather Service says there is a 100% chance of rain with the approaching storm. Nov. 13, 2023. (NWS)

“We could see flooding on the streets and highways, along with gusty winds,” Goldberg says.

Ahead of the storm, the NWS is urging residents to clear out rain gutters, consider backup plans for any outdoor activities, and – as always – avoid driving on flooded roads.