An atmospheric river will bring more rain, heavy snow, gusty winds, and coastal flooding to California. This live blog will keep you up-to-date on the latest threats.

More heavy rain will impact Southern California on Tuesday. Weather & Radar's expert meteorologists will be ready with the latest forecast.

A moderate risk for excessive rain is now in place for Tuesday. More flooding is possible, especially in southern California. Check in with Weather & Radar for the latest information throughout the day tomorrow.

Evacuations are in place in Santa Barbara County for properties along waterways associated with the Alisal burn area and some areas along Sycamore Creek and Mission Creek in the city of Santa Barbara.

The Santa Barbara Airport is closed due to flooding on the airfield. Commercial flights have been canceled, and general aviation operations have been paused.

Parts of southern California have seen more than half a foot of rain over the last 48 hours. With more rain on the way, flash flooding remains a concern.

Power outages are starting to grow across California. Currently, 14,173 customers are without power.

Meteorologist Becca Parker will have the latest forecast live on YouTube at 3 p.m. ET/12:00 p.m. PT.

Heavy snow hit the Sierra Nevada overnight, plastering everything with a wet snow and causing local power outages. Here is a view of the wintry scene from near Truckee, Calf.

High surf, strong rip currents and coastal flooding are concerns along the California coastline. Coastal residents should prepare for possible flooding.

In addition to the flooding threat, a few strong storms may break out in central California today. There is a slight risk, a level two out of five, of severe weather across parts of the Sacramento Valley. The strongest storms this afternoon will be capable of a tornado or two along with isolated marginal hail and damaging winds.

Heavy snow is already causing issues in the Sierras. Chain controls are now in place for Donner Pass. Jonathan Petramala is in the Sierras with reports for Weather & Radar throughout the day.