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
Historic Heatwave Hits the Northern Rockies

Historic Heatwave Hits the Northern Rockies

ALL TIME RECORD HIGHS were broken across the

13 Jul 2026 1:55 AM
Monsoon Moisture Returns to the Southwest, Increasing Storm and Flash Flood Potential

Monsoon Moisture Returns to the Southwest, Increasing Storm and Flash Flood Potential

After weeks of hot and mostly dry weather, th

13 Jul 2026 1:50 AM
Flooding Rain, Severe Storms Continue to Track Across the South

Flooding Rain, Severe Storms Continue to Track Across the South

Life-threatening flash flooding developed las

13 Jul 2026 1:45 AM
Saharan Dust, Excessive Heat Impact the Southeast

Saharan Dust, Excessive Heat Impact the Southeast

Hazy skies will be hovering over portions of

13 Jul 2026 1:00 AM
Record Heat Returns To the Northeast, Storms Possible

Record Heat Returns To the Northeast, Storms Possible

After several stormy days to end the previous

13 Jul 2026 12:45 AM
Another Day of Storms for the Plains & Front Range

Another Day of Storms for the Plains & Front Range

Several rounds of severe weather have been ro

11 Jul 2026 1:50 AM
Babylon Fire in UT Surpasses 100,000 Acres, CO Fires Continue to Grow

Babylon Fire in UT Surpasses 100,000 Acres, CO Fires Continue to Grow

The Aspen Acres fire continues to burn in Sou

10 Jul 2026 1:40 AM