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
Severe Threat Looms This Weekend

Severe Threat Looms This Weekend

Here we go again. After what looks like a lar

6 Apr 2026 10:43 AM
Florida: Rain Coming to Drought-Stricken State

Florida: Rain Coming to Drought-Stricken State

A low-pressure system that moved over Texas b

6 Apr 2026 10:35 AM
Artemis II Closing in on the Moon

Artemis II Closing in on the Moon

LIFTOFF - At 6:35 PM ET on April 1, 2026, NAS

6 Apr 2026 10:25 AM
West Pattern: Moisture Returns

West Pattern: Moisture Returns

The drought conditions have started to increa

6 Apr 2026 9:45 AM
Severe Storms Push East Easter Sunday

Severe Storms Push East Easter Sunday

Several rounds of severe storms have tracked

5 Apr 2026 10:55 PM
Cold Front Ends Record Heat

Cold Front Ends Record Heat

Unseasonably warm air is taking over much of

5 Apr 2026 10:20 AM
Snow and Ice Persist on Saturday in the Upper-Midwest

Snow and Ice Persist on Saturday in the Upper-Midwest

On the northern side of the strong low creati

4 Apr 2026 9:30 PM