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
Wildfire Danger: Critical Conditions Today

Wildfire Danger: Critical Conditions Today

Fire outlooks have been issued across the Fro

18 Feb 2026 2:30 PM
Stormy Pattern Continues This Week with More Rain, Mountain Snow Ahead for California

Stormy Pattern Continues This Week with More Rain, Mountain Snow Ahead for California

CALIFORNIA - The state of California has been

18 Feb 2026 11:40 AM
Weirdly Warm February on the Plains

Weirdly Warm February on the Plains

More record high temperatures were broken acr

18 Feb 2026 11:20 AM
Severe Storms Target the Midwest, Ohio Valley on Thursday

Severe Storms Target the Midwest, Ohio Valley on Thursday

While the Midwest has finally seen a break fr

18 Feb 2026 11:15 AM
Rounds of Snow Return to the Rockies

Rounds of Snow Return to the Rockies

ROCKIES - Widespread winter alerts remain in

18 Feb 2026 3:00 AM
Severe Storms Target the South Sunday

Severe Storms Target the South Sunday

Storms flew through Texas, Louisiana, and Mis

15 Feb 2026 11:05 PM
Lingering Snow in the Northeast

Lingering Snow in the Northeast

NORTHEAST - As this next clipper system cont

12 Feb 2026 8:05 AM