What to Know

Scattered showers arrived Monday night before rain became more widespread overnight and into Tuesday morning in Los Angeles County.

Downtown Los Angeles' average rainfall for October is 0.57 inches, meaning the storm might deliver a month's worth of rainfall or more in just a few hours.

A severe thunderstorm warning was issued for Santa Monica, Calabasas and Agoura Hills until 9:30 a.m.

Flash flood watches will be in effect for recent burn scar areas, including the Eaton and Palisades fire zones.

Roads will be slick with flooding possible in some locations during the morning drive.

Temperatures on Tuesday will run 10 to 20 degrees below normal.

The first significant storm of the season is brining rain to Los Angeles. See live updates below.

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