Flash Flood and Debris Flow Risk for Southern California Wednesday

news image
Top Stories
4 Dec 2019 7:01 AM
https://www.youtube.com/watch?v=wVqfm7klJdE&feature=youtu.be     An atmospheric river of Pacific moisture will be streaming over the Southwest Wednesday.  This particular set-up will lead to heavy rain and mountain snow for California. Southern California could see the heaviest rain from this event and that means a risk of flash flooding.  Burn scarred areas from the wildfires this year will be included with that heavy rain risk and that means we could see some debris flows and mudslides.

Flood Alerts

Flood alerts are in place today from Santa Barbara to San Diego as conditions will continue to be dangerous through the afternoon.  If you are located in any of these areas, you will want to make sure you have a way to get to higher grounds.

Forecast

The heaviest rain for the Pacific Coast will be for the morning hours. By the early afternoon the heaviest rain will be farther inland, but the risk for flooding will last well into the afternoon.

Rainfall Through Early Wednesday

Rainfall Potential

A solid 1-3 inches of rainfall will be possible across Southern California, but away from the coast some areas could see over 4 inches of rainfall.  This amount of rain will could lead to flooded roads and travel delays. Keep checking with WeatherNation for the latest heavy rain updates.  
All Weather News
More
Weekend Storm Brings Soaking Rain and Severe Threat Across Texas

Weekend Storm Brings Soaking Rain and Severe Threat Across Texas

For the rest of the weekend, heavy rain and s

14 Nov 2026 8:45 PM
Freezing Temperatures Across the Midwest and Southeast

Freezing Temperatures Across the Midwest and Southeast

Millions of Americans are getting a chilly re

14 Nov 2026 7:50 PM
Snow, Flooding, & Strong Winds Hit California, Active Pacific Pattern Persists

Snow, Flooding, & Strong Winds Hit California, Active Pacific Pattern Persists

The first in a line of several storms systems

14 Nov 2026 7:00 PM
Tropics Update: All is Quiet

Tropics Update: All is Quiet

There are only a few weeks left in the Hurric

14 Nov 2026 10:00 AM
More Snow Chances for the Northeast Into the Weekend

More Snow Chances for the Northeast Into the Weekend

Heavy snow is piling up across portions of th

14 Nov 2026 12:30 AM
Lake Effect Machine May Fire Up Midweek

Lake Effect Machine May Fire Up Midweek

We've got a party getting started in the midw

13 Nov 2026 2:00 AM
Severe Threat Rolls Returns to the Ohio Valley

Severe Threat Rolls Returns to the Ohio Valley

An interesting setup is rolling through the M

11 Nov 2026 12:20 PM