Rocks and vegetation screen Highway 70 pursuing a landslide successful the Dixie Fire portion connected Sunday, Oct. 24, 2021, successful Plumas County, Calif. Heavy rains blanketing Northern California created descent and flood hazards successful onshore scorched during past summer's wildfires. (AP Photo/Noah Berger)
SAN FRANCISCO – A almighty tempest barreled toward Southern California aft flooding highways, toppling trees and causing mud flows successful areas burned bare by caller fires crossed the bluish portion of the state.
Drenching showers and beardown winds accompanied the weekend's accomplishment of an atmospheric stream — a agelong and wide plume of moisture pulled successful from the Pacific Ocean. The National Weather Service’s Sacramento bureau warned of “potentially historical rain.”
Flooding was reported crossed the San Francisco Bay Area, closing streets successful Berkeley, inundating Oakland's Bay Bridge toll plaza and overflowing rivers successful Napa and Sonoma counties. Power poles were downed and tens of thousands of radical successful the North Bay were without electricity.
By Sunday morning, Mount Tamalpais conscionable northbound of San Francisco had recorded a fractional ft (15 centimeters) of rainfall during the erstwhile 12 hours, the upwind work said.
“Some of our higher elevation locations could spot 6, 7, 8 inches of rainfall earlier we’re each said and done," upwind work meteorologist Sean Miller said.
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About 150 miles (241 kilometers) to the north, the California Highway Patrol closed a agelong of State Route 70 successful Butte and Plumas counties due to the fact that of aggregate landslides wrong the monolithic Dixie Fire pain scar.
“We person already had respective collisions this greeting for vehicles hydroplaning, galore trees falling, and respective roadways that are experiencing flooding,” the road patrol's bureau successful Oroville tweeted connected Sunday. “If you tin enactment location and disconnected the roads today, delight do. If you are retired connected the roads, delight usage utmost caution.”
In adjacent Colusa and Yolo counties, authorities highways 16 and 20 were unopen for respective miles owed to mudslides, the authorities Department of Transportation said.
Burn areas stay a concern, arsenic onshore devoid of vegetation can’t soak up dense rainfall arsenic quickly, expanding the likelihood of flash flooding.
“If you are successful the vicinity of a caller pain scar and haven’t already, hole present for apt debris flows,” the Sacramento upwind work tweeted. “If you are told to evacuate by section officials, oregon you consciousness threatened, bash not hesitate to bash so. If it is excessively precocious to evacuate, get to higher ground.”
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South of San Francisco, evacuation orders were successful effect successful the Santa Cruz Mountains implicit concerns that respective inches of rainfall could trigger debris flows successful the CZU Lightning Complex Fire pain scar erstwhile the tempest moves done aboriginal Monday. Further south, parts of occidental Santa Barbara County saw evacuation warnings upgraded to orders successful the country burned by this month’s Alisal Fire.
Strong winds were besides expected, with gusts of up to 60 mph (97 kph) astatine the windiest spots successful Northern California. Elevations supra 9,000 feet (2,745 meters) successful the Sierra Nevada could get 18 inches of snowfall oregon much from Sunday until Monday morning.
Recent storms person helped incorporate immoderate of the nation’s largest wildfires this year. But it remains to beryllium seen if the bedewed upwind volition marque a dent successful the drought that’s plaguing California and the occidental United States. California’s clime is hotter and drier present and that means the rainfall and snowfall that does autumn is apt to evaporate oregon sorb into the soil.
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California’s 2021 h2o year, which ended Sept. 30, was the 2nd driest connected grounds and past year’s was the 5th driest connected record. Some of the state’s astir important reservoirs are astatine grounds debased levels.
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