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
Northern Plains Heat Pushes into Upper Midwest

Northern Plains Heat Pushes into Upper Midwest

Record high temperatures have been breaking s

28 May 2026 12:05 PM
Heavy Rain and Flooding Threat Continues Across the South

Heavy Rain and Flooding Threat Continues Across the South

More rounds of heavy rain are expected to mov

28 May 2026 12:00 PM
Severe Storms Return to the Southern Plains Friday & Saturday

Severe Storms Return to the Southern Plains Friday & Saturday

TEXAS - Strong storms that produced nearly 80

28 May 2026 12:00 PM
Severe Storms Possible in the Pacific Northwest

Severe Storms Possible in the Pacific Northwest

You read that right! An unusual setup could l

28 May 2026 10:55 AM
Severe Storms Threaten Nation's Capital

Severe Storms Threaten Nation's Capital

The Storm Prediction Center has highlighted a

27 May 2026 11:35 PM
Severe Storms, Heavy Rain Target the Southeast

Severe Storms, Heavy Rain Target the Southeast

WHAT TO EXPECTHeavy rain has already hit nume

24 May 2026 8:00 PM
NOAA Releases Summer Outlook, Above Average Temperatures Expected

NOAA Releases Summer Outlook, Above Average Temperatures Expected

The National Oceanic and Atmospheric Administ

24 May 2026 3:00 PM