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(KTXL) — California is bracing for a new atmospheric river that will bring rain, winds and the threat of flooding, all while many communities dig themselves out of several feet of snow from earlier storms.

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The new atmospheric river is described as a “warm” one, with the potential to melt freshly fallen snow in the foothill regions, sending dangerous quantities of snowmelt and rain down the creeks and rivers that traverse the state.

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The brunt of the storm is expected to hit California on Thursday and continue over the weekend, all while 34 of the state’s 58 counties are under a governor’s declaration of emergency due to recent winter storms.

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Northern California Storm Updates:


1:28 p.m. — Chains controls are in effect along Interstate 80 and Highway 50 in the Sierra, according to Caltrans

9:04 a.m. The UC Berkely Central Sierra Snow Lab reported that 6.4 inches of snow has fallen over the last 24 hours near Donner Summit.

This is now the fourth snowiest winter of all time at the snow lab since 1946.


11:12 a.m. — Chain controls are in effect on Eastbound and Westbound US-50 between Twin Bridges and Meyers, according to Caltrans.

11 a.m. — CAL OES along with several other state and federal agencies provided and update as to the efforts being put forward to aid those communities impacted by recent storms.

10:40 a.m. — President Joe Biden approved an emergency declaration for the state of California due to the “emergency conditions resulting from severe winter storms, flooding, landslides and mudslides” that began on March 9.

The action allows several federal agencies to coordinate disaster relief efforts and to mobilize staff and resources for the storm response in the following counties: Amador, Butte, El Dorado, Fresno, Humboldt, Imperial, Inyo, Kern, Lake, Los Angeles, Madera, Mariposa, Mendocino, Merced, Mono, Monterey, Napa, Nevada, Placer, Plumas, Sacramento, San Bernardino, San Francisco, San Mateo, San Luis Obispo, Santa Barbara, Santa Clara, Santa Cruz, Sierra, Sonoma, Stanislaus, Tulare, Tuolumne, and Yuba.

9:20 a.m. US-50 has been closed in both directions between Twin Bridges and Meyers for avalanche control, according to Caltrans District 3. There is no estimated time of reopening.

7:30 a.m. — A high avalanche danger has been issued by the Forest Service Sierra Avalanche in the Greater Lake Tahoe Area and the Central Sierra Nevada Mountains.

El Dorado County announced that their offices in South Lake Tahoe will be closed due to weather.


10:49 p.m. — A mudslide caused traffic to be held between Twin Bridges and Meyers.

9:24 p.m. — Gov. Newsom requested a Presidential Emergency Declaration due to the storms, which would allow the authorization of federal assistance. 

7:27 p.m. — A Flood Advisory was issued until Friday at 10 a.m. for large parts of the Sacramento and north San Joaquin valleys. The east to northeast Delta as well as the surrounding foothills are included in the advisory. 

The advisory affects the following counties: Placer, Amador, Butte, Calaveras, Colusa, El Dorado, Glenn, Nevada, Plumas, Sacramento, San Joaquin, Shasta, Solano, Stanislaus, Sutter, Tehama, Tuolumne, Yolo and Yuba counties.

6 p.m. — The roof of a recycling center in Nevada County collapsed under the weight of the snow.

5 p.m. — FOX40’s Weather Radar shows a continuous stretch of California being hit by rain, from the Oregon border in the north to the Grapevine near Los Angeles in the south.

3 p.m. — Evacuation warning issued along the Tuolumne River in Modesto.

Emergency officials in Stanislaus County issued an evacuation warning for residents of an area along the southern side of the Tuolumne River.

The warning applies to residents and businesses that live in the area bounded by the Tuolumne River on the north and River Road on the south, from S. 9th St. to Avon St.

Officials say there is a shelter available at Patterson High School, 200 North 7th St. in Patterson, CA. Evacuated residents can also call 209-552-3880.

Thursday 1 p.m. — A Flood Watch issued by the National Weather Service goes into effect in the Sacramento and San Joaquin Valleys, Northeast Foothills and Delta areas.

The agency advises that the flooding could be caused by “excessive rainfall and snow melt.” The Flood Watch is in effect until Sunday morning.

Wednesday 10:30 p.m. — Gov. Gavin Newsom extends a storm state of emergency to 21 more counties: Butte, El Dorado, Fresno, Humboldt, Imperial, Inyo, Lake, Mendocino, Merced, Monterey, Napa, Placer, Plumas, Sacramento, San Francisco, San Mateo, Santa Clara, Santa Cruz, Stanislaus, Tuolumne and Yuba.

The proclamation was first made in early March and included only 13 counties: Amador, Kern, Los Angeles, Madera, Mariposa, Mono, Nevada, San Bernardino, San Luis Obispo, Santa Barbara, Sierra, Sonoma, and Tulare.