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
Strong Storms and Heavy Rain Headed for Texas and the South

Strong Storms and Heavy Rain Headed for Texas and the South

SOUTH - As we end the work week, heavy rain w

12 Feb 2026 10:30 PM
Temperatures Forecast To Soar Across the Central States This Weekend

Temperatures Forecast To Soar Across the Central States This Weekend

It has been a tale of two halves of the count

12 Feb 2026 10:25 PM
Rockies Receive Some Much-Needed Help

Rockies Receive Some Much-Needed Help

ROCKIES - As our behemoth of a trough moves o

12 Feb 2026 5:30 PM
California Round 1 Wraps, Another Late Weekend

California Round 1 Wraps, Another Late Weekend

CALIFORNIA - Rain and snow graced the state o

12 Feb 2026 3:30 PM
Lingering Snow in the Northeast

Lingering Snow in the Northeast

NORTHEAST - As this next clipper system cont

12 Feb 2026 8:05 AM
Cold Air Remains Across the Northeast

Cold Air Remains Across the Northeast

It was another cold morning on Monday across

10 Feb 2026 2:50 AM
Record Heat Across the Central U.S.

Record Heat Across the Central U.S.

It was a hot day on Monday, February 9th in t

10 Feb 2026 2:45 AM