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
Total Lunar Eclipse Visible Across North America Tuesday Morning

Total Lunar Eclipse Visible Across North America Tuesday Morning

A blood moon will soon be gracing (clear) ski

25 Feb 2026 7:12 PM
Spring & Summer Like Temperatures For the Southwest

Spring & Summer Like Temperatures For the Southwest

This week brings some nice days to the southe

25 Feb 2026 7:00 PM
A Clipper Brings Additional Quick Snow to the Northeast

A Clipper Brings Additional Quick Snow to the Northeast

The Northeast has gotten another few inches o

25 Feb 2026 6:45 PM
Fire Burns Through the Florida Everglades, Prompting Road Closures

Fire Burns Through the Florida Everglades, Prompting Road Closures

A fast-moving brush fire is burning across pa

25 Feb 2026 3:55 PM
Northeast Hit By Historic Snowstorm

Northeast Hit By Historic Snowstorm

MAJOR SYSTEM RECAP:The Northeast hasn't seen

25 Feb 2026 3:50 PM
Elevated Fire Danger Across Southern Plains

Elevated Fire Danger Across Southern Plains

Last week, multiple fires broke out across th

25 Feb 2026 8:55 AM
Heavy Rain Wrapping Up Out West

Heavy Rain Wrapping Up Out West

Inches of rain and feet of snow fell across t

25 Feb 2026 3:00 AM