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SAN FRANCISCO – An atmospheric river has begun to slam California that is expected to bring days of dense rain, beardown wind gusts and perchance feet of upland snow to the Golden State done aboriginal adjacent week, ushering successful the region's rainy season.
The tempest strategy is forecast to bring respective months' worthy of rainfall to Southern California successful the span of conscionable a fewer days, portion a flash flood threat covers the Bay Area and Northern California Thursday.
Santa Clara County urged drivers to usage caution Thursday morning. Meanwhile, portion dense rainfall fell during the tallness of the Thursday greeting unreserved successful San Francisco.
A little crushed halt was issued astatine San Francisco International Airport owed to precocious winds Thursday afternoon.
Meanwhile, the City of Los Angeles issued evacuation warnings astir the Hurst and Sunset Fire pain scars from January's devastating wildfires done Sunday morning. Evacuation orders were besides issued for areas astir Mandeville Canyon which was wrong the footprint of the Palisades Fire.
WHAT IS A WILDFIRE BURN SCAR AND HOW COULD THEY HAVE LASTING IMPACTS?
Video Thursday greeting showed Los Angeles firefighters going door-to-door successful Pasadena informing radical surviving successful high-risk homes.
According to the National Weather Service, ash from wildfires creates pain scars – a water-repellent coating that prevents the crushed from absorbing h2o and causes the country to beryllium predisposed to flash flooding and debris flows.
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FILE - PACIFIC PALISADES, CA - OCTOBER 14, 2025 -- Workers wide debris from a concern destroyed successful the Palisades occurrence arsenic scattered downpours, almighty winds and fears of flooding proceed to endanger areas of the Pacific Palisades connected October 14, 2025. The caller rainfall prompted evacuation warnings for residents adjacent caller pain areas successful the Pacific Palisades. ((Genaro Molina/Los Angeles Times via Getty Images))
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FILE - PACIFIC PALISADES, CA - OCTOBER 14, 2025 -- Workers wide debris from a concern destroyed successful the Palisades occurrence arsenic scattered downpours, almighty winds and fears of flooding proceed to endanger areas of the Pacific Palisades connected October 14, 2025. The caller rainfall prompted evacuation warnings for residents adjacent caller pain areas successful the Pacific Palisades. ((Genaro Molina/Los Angeles Times via Getty Images))
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FILE - LOS ANGELES, CALIFORNIA - OCTOBER 14: Water flows past trees successful the Los Angeles River, swollen by tempest runoff, connected October 14, 2025 successful Los Angeles, California. A beardown atmospheric stream tempest is hitting Southern California today, triggering evacuation warnings successful the Eaton and Palisades occurrence pain scars owed to debris travel fears. ((Photo by Mario Tama/Getty Images))
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FILE - CALIFORNIA, USA - FEBRUARY 6: A pistillate with an umbrella walks connected a roadworthy during dense rainfall successful Guerneville of Sonoma County, California, United States connected February 6, 2025 arsenic an atmospheric stream hits Northern California. ((Photo by Tayfun Coskun/Anadolu via Getty Images))
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FILE - LOS ANGELES, CALIFORNIA - FEBRUARY, 5: An abandoned car sits successful floodwaters during an atmospheric stream tempest successful Los Angeles, California connected Monday, February 5, 2024. (Photo by Kyle Grillot for The Washington Post via Getty Images) ( )
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FILE - A car drives done a flooded thoroughfare successful Rosemead, California, connected Oct. 14, 2025. (Photo by Frederic J. Brown / AFP) (Photo by FREDERIC J. BROWN/AFP via Getty Images)
According to the FOX Forecast Center, rainfall is expected to expanse crossed coastal California and farther inland successful the Central Valley Thursday.
NOAA's Weather Prediction Center issued 2 antithetic Level 2 retired of 4 flash flood threats Thursday, 1 that covers San Francisco and the Bay Area, the different covers Sacramento and parts of the Shasta Cascades, Sierra Nevadas and Gold Country.
Thunderstorms with lightning and beardown upwind gusts are imaginable arsenic storms travel onshore.
KNOW YOUR FLOOD TERMINOLOGY: WHAT FLOOD WATCHES, WARNINGS AND EMERGENCIES REALLY MEAN
(FOX Weather)
The much aggravated rainfall and the flood menace volition determination into Southern California Thursday nighttime done the Friday greeting commute. A 2nd circular is forecast to statesman Friday evening.
All told, parts of the California coast, including San Francisco and Los Angeles, could spot 3-5 inches of rainfall done Monday, with localized pockets of 5-8 inches of rain. The San Gabriel and Santa Monica ranges could besides spot 5-8 inches of rainfall.
A NEW TECH APPROACH TO FIGHTING WILDFIRES
(FOX Weather)
If this tempest unfolds arsenic forecast, this would beryllium 1 of Los Angeles' wettest Novembers successful the past 50 years.
DRIVING ON THE ICE AND DRIVING IN THE SNOW
(FOX Weather)
Meanwhile, winter upwind alerts person been posted for the Sierras done Friday. Some of the highest upland passes person already closed for the season.
Wind gusts on ridgetops successful the Sierras could transcend 100 mph.
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