Weather Warnings for California

Issued by the National Weather Service

Current watches, warnings, and advisories for California
Alerts Updated: August 11, 2026, 11:51 pm  UTC


Special Weather Statement issued August 11 at 4:43PM PDT by NWS Phoenix AZ

Summary: At 443 PM PDT, Doppler radar was tracking a strong thunderstorm 13 miles southeast of Ocotillo Wells, or 15 miles northwest of Plaster City. This thunderstorm was nearly stationary. HAZARD...Wind gusts up to 50 mph. SOURCE...Radar indicated. IMPACT...Gusty winds could knock down tree limbs and blow around unsecured objects. This storm will remain over mainly rural areas of west central Imperial County.
Severity:  Moderate    Effective:  August 11, 2026, 4:43 pm      Expires:  August 11, 2026, 5:15 pm
Area:  Imperial County Southwest; Imperial County West


Flash Flood Warning issued August 11 at 4:42PM PDT until August 11 at 7:45PM PDT by NWS Las Vegas NV

Summary: FFWVEF The National Weather Service in Las Vegas has issued a * Flash Flood Warning for... San Bernardino County in southern California... * Until 745 PM PDT. * At 442 PM PDT, Doppler radar indicated thunderstorms producing heavy rain across the warned area. Flash flooding is ongoing or expected to begin shortly. HAZARD...Life threatening flash flooding. Thunderstorms producing flash flooding. SOURCE...Radar indicated. IMPACT...Life threatening flash flooding of creeks and streams, urban areas, highways, streets and underpasses. * Some locations that will experience flash flooding include... Mountain Pass, Kingston Road, and Excelsior Mine Road
Severity:  Severe    Effective:  August 11, 2026, 4:42 pm      Expires:  August 11, 2026, 7:45 pm
Area:  San Bernardino, CA


Severe Thunderstorm Warning issued August 11 at 4:39PM PDT until August 11 at 5:00PM PDT by NWS Las Vegas NV

Summary: At 439 PM PDT, a severe thunderstorm was located 8 miles east of Newberry Springs, or 20 miles east of Daggett, moving east at 15 mph. HAZARD...60 mph wind gusts and small hail. SOURCE...Radar indicated. IMPACT...Expect damage to roofs, siding, and trees. Locations impacted include... Newberry Springs. This includes Interstate 40 in California between mile markers 19 and 40.
Severity:  Severe    Effective:  August 11, 2026, 4:39 pm      Expires:  August 11, 2026, 5:00 pm
Area:  San Bernardino, CA


Special Weather Statement issued August 11 at 4:37PM PDT by NWS San Diego CA

Summary: At 437 PM PDT, Doppler radar was tracking a strong thunderstorm over northern Boulevard, or near I-8 Between Boulevard And Imperial County Line, moving north at 15 mph. HAZARD...Wind gusts of 50 to 55 mph. Small hail is also likely. SOURCE...Radar indicated. IMPACT...Gusty winds could knock down tree limbs and blow around unsecured objects. Locations impacted include... Mount Laguna, I-8 Between Pine Valley And Boulevard, I-8 Between Boulevard And Imperial County Line, Hwy S2 Vallecito Creek Rd, Hwy S2 Between Canebrake And Imperial County Line, Boulevard, Hwy S2 Between Agua Caliente And Canebrake, Mountain Spring, Fish Creek Wash, Campo, Hwy S2 Between Shelter Valley And Agua Caliente, La Posta Indian Reservation, Canebrake, Tierra Del Sol, Agua Caliente, Campo Indian Reservation, Live Oak Springs, Jacumba, and Manzanita Indian Reservation.
Severity:  Moderate    Effective:  August 11, 2026, 4:37 pm      Expires:  August 11, 2026, 5:15 pm
Area:  San Diego County Mountains; San Diego County Deserts


Flood Advisory issued August 11 at 4:36PM PDT until August 11 at 6:15PM PDT by NWS Las Vegas NV

Summary: * WHAT...Flooding caused by excessive rainfall continues. * WHERE...San Bernardino County in southern California... * WHEN...Until 615 PM PDT. * IMPACTS...Minor flooding in low-lying and poor drainage areas. Some low-water crossings may become impassable. * ADDITIONAL DETAILS... - At 436 PM PDT, Doppler radar indicated heavy rain due to thunderstorms. Minor flooding is ongoing or expected to begin shortly in the advisory area. Between 1 and 2 inches of rain have fallen. - Flooding impacts will continue, but no additional rainfall is expected. - Some locations that will experience flooding include... Barstow, Daggett, Owl Canyon Campground and Nebo Center. - http://www.weather.gov/safety/flood
Severity:  Minor    Effective:  August 11, 2026, 4:36 pm      Expires:  August 11, 2026, 6:15 pm
Area:  San Bernardino, CA


Special Weather Statement issued August 11 at 4:26PM PDT by NWS Phoenix AZ

Summary: At 426 PM PDT, Doppler radar was tracking a strong thunderstorm near Desert Center, moving north at 5 mph. HAZARD...Wind gusts up to 50 mph. SOURCE...Radar indicated. IMPACT...Gusty winds could knock down tree limbs and blow around unsecured objects. Locations impacted include... Desert Center. This includes the following highways... CA Interstate 10 between mile markers 105 and 115. CA Route 177 between mile markers 1 and 10.
Severity:  Moderate    Effective:  August 11, 2026, 4:26 pm      Expires:  August 11, 2026, 5:15 pm
Area:  Chuckwalla Mountains; Chuckwalla Valley


Flash Flood Warning issued August 11 at 4:24PM PDT until August 11 at 7:30PM PDT by NWS Las Vegas NV

Summary: FFWVEF The National Weather Service in Las Vegas has issued a * Flash Flood Warning for... South Central Inyo County in south central California... * Until 730 PM PDT. * At 424 PM PDT, Doppler radar indicated thunderstorms producing heavy rain across the warned area. Between 0.25 and 0.5 inches of rain have fallen. Flash flooding is ongoing or expected to begin shortly. HAZARD...Life threatening flash flooding. Thunderstorms producing flash flooding. SOURCE...Radar indicated. IMPACT...Life threatening flash flooding of creeks and streams, urban areas, highways, streets and underpasses. * Some locations that will experience flash flooding include... Mainly rural areas of South Central Inyo County including the southwest portions of Death Valley National Park and Butte Valley.
Severity:  Severe    Effective:  August 11, 2026, 4:24 pm      Expires:  August 11, 2026, 7:30 pm
Area:  Inyo, CA


Flash Flood Warning issued August 11 at 4:18PM PDT until August 11 at 7:15PM PDT by NWS Las Vegas NV

Summary: FFWVEF The National Weather Service in Las Vegas has issued a * Flash Flood Warning for... San Bernardino County in southern California... * Until 715 PM PDT. * At 418 PM PDT, Doppler radar indicated thunderstorms producing heavy rain across the warned area. Between 0.5 and 1.5 inches of rain have fallen. Additional rainfall amounts of 1 to 2 inches are possible in the warned area. Flash flooding is ongoing or expected to begin shortly. HAZARD...Life threatening flash flooding. Thunderstorms producing flash flooding. SOURCE...Radar indicated. IMPACT...Life threatening flash flooding of creeks and streams, urban areas, highways, streets and underpasses. * Some locations that will experience flash flooding include... Newberry Springs. This includes the following highways... Interstate 15 in California between mile markers 90 and 98. Interstate 40 in California between mile markers 16 and 31.
Severity:  Severe    Effective:  August 11, 2026, 4:18 pm      Expires:  August 11, 2026, 7:15 pm
Area:  San Bernardino, CA


Special Weather Statement issued August 11 at 4:12PM PDT by NWS Reno NV

Summary: At 410 PM PDT, strong thunderstorms are ongoing across the eastern Sierra and western Nevada. These storms will increase in coverage northward through the late afternoon. HAZARD...Wind gusts up to 50 mph, half inch size hail, heavy rainfall, and blowing dust downwind of dry sinks and playas. SOURCE...Radar indicated. IMPACT...Gusty winds could knock down tree limbs and blow around unsecured objects. Minor hail damage to vegetation is possible. Blowing dust could lower visibility and make travel dangerous. Locations impacted include... Fallon, Mammoth Lakes, Lovelock, Bodie, Chalfant, Crowley Lake, Benton, June Lake, Bridgeport, Lee Vining, Twin Lakes, Lahontan Reservoir, Toms Place, Mono Lake, Fernley, Dayton, Hawthorne, Yerington, Virginia Peak, and Middlegate.
Severity:  Moderate    Effective:  August 11, 2026, 4:12 pm      Expires:  August 11, 2026, 6:15 pm
Area:  Mono; Mineral and Southern Lyon Counties; Greater Reno-Carson City-Minden Area; Western Nevada Basin and Range including Pyramid Lake; Northern Washoe County


Flash Flood Warning issued August 11 at 4:02PM PDT until August 11 at 6:30PM PDT by NWS Las Vegas NV

Summary: At 402 PM PDT, Public has reported significant flooding along I-15 near Fort Irwin Road in Barstow. Between 1.5 and 2.5 inches of rain have fallen. Additional rainfall amounts of 0.5 to 1 inch are possible in the warned area. Flash flooding is already occurring. HAZARD...Life threatening flash flooding. Thunderstorms producing flash flooding. SOURCE...Public reported flash flooding, radar indicated rainfall. IMPACT...Life threatening flash flooding of creeks and streams, urban areas, highways, streets and underpasses. Some locations that will experience flash flooding include... Daggett and Nebo Center. This includes the following highways... Interstate 15 in California between mile markers 81 and 89. Interstate 40 in California between mile markers 2 and 11.
Severity:  Severe    Effective:  August 11, 2026, 4:02 pm      Expires:  August 11, 2026, 6:30 pm
Area:  San Bernardino, CA


Flood Advisory issued August 11 at 2:56PM PDT until August 12 at 4:00PM PDT by NWS Los Angeles/Oxnard CA

Summary: * WHAT...Flooding caused by excessive rainfall is expected. * WHERE...Extreme Northwest Ventura County in southwestern California... * WHEN...Until 400 PM PDT Wednesday. * IMPACTS...Minor flooding in low-lying and poor drainage areas. * ADDITIONAL DETAILS... - At 256 PM PDT, Doppler radar indicated heavy rain due to thunderstorms. Minor flooding is ongoing or expected to begin shortly in the advisory area. - Some locations that will experience flooding include... Highway 33 from Lockwood Valley Road to the Santa Barbara County line. - http://www.weather.gov/safety/flood
Severity:  Minor    Effective:  August 11, 2026, 2:56 pm      Expires:  August 12, 2026, 4:00 pm
Area:  Ventura, CA


Flood Advisory issued August 11 at 2:36PM PDT until August 11 at 5:00PM PDT by NWS Los Angeles/Oxnard CA

Summary: * WHAT...Flooding caused by excessive rainfall is expected. * WHERE...A small portion of northeastern Santa Barbara County in southwestern California... * WHEN...Until 500 PM PDT. * IMPACTS...Minor flooding in low-lying and poor drainage areas. Rock slides and mud slides possible. * ADDITIONAL DETAILS... - At 235 PM PDT, Doppler radar indicated heavy rain due to thunderstorms. Minor flooding is ongoing or expected to begin shortly in the advisory area. Rock slides and mud slides possible. - Some locations that will experience flooding include... Ventucopa. - http://www.weather.gov/safety/flood
Severity:  Minor    Effective:  August 11, 2026, 2:36 pm      Expires:  August 11, 2026, 5:00 pm
Area:  Santa Barbara, CA


Coastal Flood Advisory issued August 11 at 2:25PM PDT until August 12 at 1:00AM PDT by NWS Eureka CA

Summary: * WHAT...High astronomical tides will cause minor flooding in low lying areas around Humboldt Bay. Up to one half foot of saltwater inundation above ground level is possible near shorelines and tidal waterways. Between 8.7 and 8.9 feet MLLW at the North Spit tide gauge is predicted. * WHERE...Northern Coastal Humboldt County. * WHEN...From 10 PM this evening to 1 AM PDT Wednesday. High tide is at 11:17 PM at the Humboldt Bay North Spit tide gauge. Saltwater inundation will be possible 1 to 2 hours before and after high tide. * IMPACTS...Flooding of low lying areas around Humboldt Bay including parks and roads with only isolated closures expected. Flooding will likely impact Jackson Ranch Road in the Arcata Bottoms and several roads in King Salmon.
Severity:  Minor    Effective:  August 11, 2026, 2:25 pm      Expires:  August 12, 2026, 1:00 am
Area:  Northern Coastal Humboldt


Flood Advisory issued August 11 at 2:24PM PDT until August 11 at 5:00PM PDT by NWS Hanford CA

Summary: * WHAT...Flooding caused by excessive rainfall is expected. Rock and mud slides. * WHERE...Southwestern Kern County in central California... * WHEN...Until 500 PM PDT. * IMPACTS...Minor flooding in low-lying and poor drainage areas. * ADDITIONAL DETAILS... - At 222 PM PDT, Doppler radar indicated heavy rain due to thunderstorms. Minor flooding is ongoing or expected to begin shortly in the advisory area. - Some locations that will experience flooding include... Mainly rural areas of Southwestern Kern County. - http://www.weather.gov/safety/flood
Severity:  Minor    Effective:  August 11, 2026, 2:24 pm      Expires:  August 11, 2026, 5:00 pm
Area:  Kern, CA


Flood Watch issued August 11 at 2:22PM PDT until August 13 at 9:00PM PDT by NWS Reno NV

Summary: * WHAT...Flash flooding caused by excessive rainfall continues to be possible. * WHERE...Portions of east central California, including the following area, Mono County and western Nevada, including the following area, Mineral and Southern Lyon Counties. * WHEN...From Wednesday afternoon through Thursday evening. * IMPACTS...Excessive runoff may result in rock, mud, and debris flows in and near steep terrain, and poorly drained urban areas. * ADDITIONAL DETAILS... - Heavy rain from thunderstorms primarily during the afteroon and evening hours Wednesday and Thursday. - http://www.weather.gov/safety/flood
Severity:  Severe    Effective:  August 11, 2026, 2:22 pm      Expires:  August 12, 2026, 4:00 pm
Area:  Mono; Mineral and Southern Lyon Counties


Coastal Flood Advisory issued August 11 at 1:56PM PDT until August 13 at 12:00AM PDT by NWS Los Angeles/Oxnard CA

Summary: * WHAT...Minor coastal flooding expected during the evening high tides. * WHERE...Santa Barbara County Southwestern Coast, Santa Barbara County Southeastern Coast, Ventura County Beaches, Malibu Coast and Los Angeles County Beaches. * WHEN...Until midnight PDT Wednesday night. * IMPACTS...Flooding of sea water is likely, around the time of high tide, over vulnerable low-lying coastal areas such as parking lots, beaches, and walkways. Significant damage to roads or structures is NOT expected. * ADDITIONAL DETAILS...Coastal flooding concerns will peak each evening between about 8 PM and 10 PM due to astronomical high tides of 7.3 to 7.5 feet.
Severity:  Minor    Effective:  August 11, 2026, 1:56 pm      Expires:  August 13, 2026, 12:00 am
Area:  Santa Barbara County Southwestern Coast; Santa Barbara County Southeastern Coast; Ventura County Beaches; Malibu Coast; Los Angeles County Beaches


Flood Advisory issued August 11 at 1:56PM PDT until August 11 at 5:00PM PDT by NWS Los Angeles/Oxnard CA

Summary: * WHAT...Flooding caused by excessive rainfall is expected. Rock and mud slides. * WHERE...Northwest Ventura County in southwestern California... * WHEN...Until 500 PM PDT. * IMPACTS...Minor flooding in low-lying and poor drainage areas. * ADDITIONAL DETAILS... - At 156 PM PDT, Doppler radar indicated heavy rain due to thunderstorms. Minor flooding is ongoing or expected to begin shortly in the advisory area. Rock and mud slides possible. - Some locations that will experience flooding include... Far western Lockwood Valley. - http://www.weather.gov/safety/flood
Severity:  Minor    Effective:  August 11, 2026, 1:56 pm      Expires:  August 11, 2026, 5:00 pm
Area:  Ventura, CA


Coastal Flood Advisory issued August 11 at 12:07PM PDT until August 12 at 11:00PM PDT by NWS San Diego CA

Summary: * WHAT...Minor coastal flooding expected during the evening high tides. * WHERE...San Diego County Coastal Areas and Orange County Coastal Areas. * WHEN...Until 11 PM PDT Wednesday. * IMPACTS...Flooding of low lying parking lots, parks, and roads. * ADDITIONAL DETAILS...High tides of 7.2 to 7.5 will peak each evening between 7:30PM-10PM due to astronomical high tides.
Severity:  Minor    Effective:  August 11, 2026, 12:07 pm      Expires:  August 12, 2026, 6:15 am
Area:  San Diego County Coastal Areas; Orange County Coastal


Fire Weather Watch issued August 11 at 10:19AM PDT until August 13 at 9:00PM PDT by NWS Reno NV

Summary: The National Weather Service in Reno has issued a Fire Weather Watch for thunderstorms and strong outflow winds, which is in effect from late Wednesday night through Thursday evening. * Affected Area...Fire Weather Zone 270 Surprise Valley California, Fire Weather Zone 271 Western Lassen, Eastern Plumas, and Eastern Sierra Counties, Fire Weather Zone 272 Greater Lake Tahoe and Truckee Area, Fire Weather Zone 278 Eastern Lassen County, Fire Weather Zone 458 Northern Washoe County. * Thunderstorms...Thunderstorm chances increase to 15 to 30 percent for Thursday leading to lightning strikes on dry fuels. Thunderstorms may also produce hail and periods of moderate to heavy rainfall. * Outflow Winds...Up to 50 mph. * Impacts...Lightning can create new fire starts and may combine with strong outflow winds to cause a fire to rapidly grow in size and intensity before first responders can contain them.
Severity:  Severe    Effective:  August 11, 2026, 10:19 am      Expires:  August 12, 2026, 2:00 pm
Area:  Surprise Valley California; Western Lassen, Eastern Plumas, and Eastern Sierra Counties; Greater Lake Tahoe and Truckee Area; Eastern Lassen County; Northern Washoe County


Air Quality Alert issued August 11 at 10:19AM MST by NWS Phoenix AZ

Summary: * WHAT...The Imperial County APCD has issued an air quality alert due to harmful levels of particle pollution from windblown dust. Visit https://www.aqmd.gov/alertinfo to check current and forecasted air quality levels. * WHERE...Imperial County. Levels of particle pollution can vary by time and location depending on emissions and local weather conditions. * WHEN...Tuesday, August 11, 2026 from 2:00 PM to 11:59 PM. * IMPACTS... Particle pollution can get deep into the lungs and cause serious health problems such as asthma attacks, heart and lung disease symptoms, and increased risk of lung infections. Everyone can be affected, but sensitive groups such as people with lung or heart disease, older adults, people who are pregnant, children, and those who spend a lot of time outdoors are at greater risk.
Severity:  Unknown    Effective:  August 11, 2026, 10:19 am      Expires:  August 12, 2026, 12:00 am
Area:  Imperial County Southwest; Chuckwalla Mountains; Imperial County Southeast; Imperial County West; Imperial Valley; Palo Verde Valley


Fire Weather Watch issued August 11 at 9:57AM PDT until August 13 at 9:00PM PDT by NWS Sacramento CA

Summary: The National Weather Service in Sacramento has issued a Fire Weather Watch for thunderstorms and strong outflow winds, which is in effect from late Wednesday night through Thursday evening. * Affected Area...Fire Zone 130 Sierra (Tehama-Plumas) Above 3000 ft, Fire Zone 132 Sierra (Yuba-Placer) 3000-5000 ft, Fire Zone 133 Sierra (Sierra-Placer) Above 5000 ft, Fire Zone 135 Sierra 3000-5000 ft, Fire Zone 136 Sierra (El Dorado-Amador) Above 5000 ft, Fire Zone 138 Sierra (Cal-Tuo) 3000-5000 ft and Fire Zone 139 Sierra (Cal-Tuo) Above 5000 ft. * Thunderstorms...Isolated to scattered coverage of a mix of wet and dry thunderstorms expected. Lightning strikes may also occur outside of main precipitation cores. * Outflow Winds...Gusty and erratic outflow winds could occur near any thunderstorm development. * Impacts...Lightning can create new fire starts and may combine with strong outflow winds to cause a fire to rapidly grow in size and intensity.
Severity:  Severe    Effective:  August 11, 2026, 9:57 am      Expires:  August 12, 2026, 4:00 pm
Area:  Sierra Nevada of Tehama-Butte-Plumas Counties Above 3000 ft; Sierra Nevada of Yuba-Sierra-Nevada-Placer Counties Between 3000-5000 ft Including Interstate 80; Sierra Nevada of Sierra-Nevada-Placer Counties Above 5000 ft Including Interstate 80; Sierra Nevada of El Dorado and Amador Counties Between 3000-5000 ft Including Highway 50; Sierra Nevada of El Dorado-Amador-Northern Alpine Counties Above 5000 ft Including Highway 50; Sierra Nevada of Calaveras and Tuolumne Counties Between 3000-5000 ft; Sierra Nevada of Calaveras-Tuolumne-Southern Alpine Counties Above 5000 ft


Coastal Flood Advisory issued August 10 at 10:18PM PDT until August 13 at 2:00AM PDT by NWS San Francisco CA

Summary: * WHAT...Up to 1.6 ft of inundation above ground level is possible in low-lying areas near shorelines and tidal waterways. * WHERE...Bayshore locations along the San Francisco Bay, San Pablo Bay, and Monterey Bay. * WHEN...Until 2 AM PDT Thursday. * IMPACTS...Flooding of lots, parks, and roads with only isolated road closures expected. * ADDITIONAL DETAILS...At the San Francisco tidal gauge, high tide is expected to be 1.6 ft above normal (7.44 ft MLLW) at 10:57 PM Tuesday 8/11 and 1.4 ft above normal (7.24 ft MLLW) at 11:49 PM Wednesday 8/12. These predictions include both astronomical tides and roughly 3-6 inches of additional water mainly from a combination of thermal expansion and accumulated sea level rise since the tidal datum was established (1983- 2001). High tide varies up to 90 minutes earlier or later along the Pacific Coast and through the San Francisco Bay, respectively.
Severity:  Minor    Effective:  August 10, 2026, 10:18 pm      Expires:  August 12, 2026, 12:00 am
Area:  San Francisco; North Bay Interior Valleys; San Francisco Bay Shoreline; Northern Monterey Bay; Southern Monterey Bay and Big Sur Coast