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 Storms Possible from Ohio to the Gulf Coast Friday and Saturday

Severe Storms Possible from Ohio to the Gulf Coast Friday and Saturday

Secondary severe weather season is underway a

7 Nov 2025 3:30 AM
First Snow Forecast of the Season for the Northern Plains

First Snow Forecast of the Season for the Northern Plains

NORTHERN PLAINS - As we head into the end of

7 Nov 2025 3:20 AM
Record Heat This Week, Before Arctic Blast

Record Heat This Week, Before Arctic Blast

Another day of records was set today across T

7 Nov 2025 3:15 AM
Next Big Push of Moisture in the Northwest

Next Big Push of Moisture in the Northwest

A series of atmospheric rivers has been respo

6 Nov 2025 11:30 PM
Windy and Stormy Weather For The Northeast

Windy and Stormy Weather For The Northeast

NORTHEAST - The Storm Prediction Center has m

6 Nov 2025 2:10 AM
King Tides Return to Start the Month

King Tides Return to Start the Month

Coastal areas will be dealing with intrusions

5 Nov 2025 11:35 AM
How Big Did the Hail Get in Texas Saturday?

How Big Did the Hail Get in Texas Saturday?

Powerful storms swept through the Lone Star S

2 Nov 2025 10:25 PM