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
Hail Pummels Missouri, Texas; Back for More Through Tonight

Hail Pummels Missouri, Texas; Back for More Through Tonight

Severe storms have been numerous this week, a

29 Apr 2026 9:00 PM
Cut-off Low Increases Rain and Snow Chances Out West

Cut-off Low Increases Rain and Snow Chances Out West

We have a rather wet pattern ahead for a lot

29 Apr 2026 8:40 PM
Late Week Heavy Rain & Storms for Texas

Late Week Heavy Rain & Storms for Texas

Rainfall & ForecastWhile much of the stat

29 Apr 2026 8:20 PM
A Look Back at Moderate Risks This Week

A Look Back at Moderate Risks This Week

MONDAYSevere storms erupted across the Midwes

29 Apr 2026 5:35 PM
West Staying Active this Week

West Staying Active this Week

WEST - Another upper-level low is set to move

28 Apr 2026 2:00 AM
Southeast Rain Brings Relief, But Drought and Wildfire Threats Persist

Southeast Rain Brings Relief, But Drought and Wildfire Threats Persist

Rounds of rain are set to return to the South

28 Apr 2026 1:50 AM
Looking Back at Last Week's Severe Storms

Looking Back at Last Week's Severe Storms

Top Image: Brett AdairSeveral strong tornadoe

27 Apr 2026 10:00 AM