Debris Flow Threat for Southwest California

news image
Top Stories
18 Mar 2018 7:10 PM
All eyes continue to be on a strong storm system that will be making its way into Southwest California Tuesday through Thursday night. An atmospheric river, or an intense plume of moisture out over the Pacific Ocean, will supply the approaching system with enough water to likely produce some of the highest rainfall totals so far this season for this area. https://twitter.com/twitter/statuses/975545834807808000 The heaviest of the rain is expected to fall between late Tuesday night and early Thursday We could see peak rainfall rates between 0.50-0.75" per hour, which could lead to an increased threat of flash flooding/debris flows in the Thomas, Whittier, Creek, and La Tuna burn scar areas. https://www.facebook.com/WeatherNation/videos/10156232567654874/ Pre-Evacuation advisories are already in effect for some cities in and near these burn scar locations. https://twitter.com/countyofsb/status/975177158653022208 Storm totals are forecast to be between 1-4" for the coasts and valleys and up to 6" possible in the foothills and mountains. In addition to a concern for the recent burn areas, other impacts include widespread flooding across the entire region and rockslides in/near canyons. Check in with your local emergency managers for the latest evacuation notices prior to this storm. For WeatherNation, I'm Meteorologist Meredith Garofalo
All Weather News
More
Series of Fronts Keeps the Midwest Stormy

Series of Fronts Keeps the Midwest Stormy

As a ridge of high pressure continues to domi

7 Aug 2026 2:51 PM
Severe Storms Target I-95 Friday, D.C. to NYC

Severe Storms Target I-95 Friday, D.C. to NYC

A series of frontal systems will keep the Nor

7 Aug 2026 12:25 PM
NOAA holds steady with below-average Atlantic hurricane season forecast

NOAA holds steady with below-average Atlantic hurricane season forecast

NOAA is not changing its outlook for the 2026

7 Aug 2026 10:40 AM
Western U.S. Under More Heat Alerts

Western U.S. Under More Heat Alerts

A large area of high pressure continues to br

7 Aug 2026 10:35 AM
Spokane Area Fires: Some Containment

Spokane Area Fires: Some Containment

SPOKANE, WA - On Saturday, August 1st, the Ol

7 Aug 2026 1:30 AM
Haboob Blows Through Phoenix; More Possible

Haboob Blows Through Phoenix; More Possible

Storms packed quite the punch on Monday night

6 Aug 2026 1:30 AM
CSU Updates Atlantic Hurricane Season Forecast for 2026

CSU Updates Atlantic Hurricane Season Forecast for 2026

Each year, Colorado State University's Tropic

6 Aug 2026 12:00 AM