Herald, CA Warnings, Watches and Advisories

Do not drive vehicles through flooded areas. The water depth or fast flowing water/mud/debris from a flash flood will make road conditions unsafe. Do not rely soley on data presented here or other third-party websites - always check your official national and local weather service agency website, socials, radio and/or TV stations for making critical decisions related to weather events.

Please carefully read each posted Warning and Alert as it relates to the area(s) being affected. We may provide a wider range of issued severe weather warnings for surrounding cities and counties, so some alerts may not directly impact this location. This is done to help with preparing for severe weather that may overlap or be heading towards Herald.

Use the Radar Maps link provided to understand the trajectory of a storm.

Flash Flood Warning issued November 22 at 4:49PM PST until November 22 at 7:45PM PST by NWS San Francisco CA

FFWMTR The National Weather Service in San Francisco has issued a * Flash Flood Warning for... West Central Alameda County in northern California... * Until 745 PM PST. * At 449 PM PST, local law enforcement reported flash flooding in Castro Valley and Union City. Between 0.5 and 1 inch of rain has fallen. Additional rainfall amounts of 1 to 2 inches are possible in the warned area. Flash flooding is already occurring. HAZARD...Flash flooding caused by heavy rain. SOURCE...Law enforcement reported. IMPACT...Flash flooding of small creeks and streams, urban areas, highways, streets and underpasses as well as other poor drainage and low-lying areas. * Some locations that will experience flash flooding include... Oakland, Hayward, San Leandro, Alameda, Union City, San Lorenzo, Castro Valley, Ashland, Cherryland and Fairview.

Lake Wind Advisory issued November 22 at 3:52PM PST until November 23 at 4:00PM PST by NWS Reno NV

* WHAT...Southwest winds 20 to 30 mph with gusts up to 50 mph and waves 2 to 4 feet for Lake Tahoe. * WHERE...Greater Lake Tahoe Area. * WHEN...Until 4 PM PST Saturday. * IMPACTS...Small boats, kayaks and paddle boards will be prone to capsizing and should remain off lake waters until conditions improve.

Flood Advisory issued November 22 at 3:50PM PST until November 23 at 12:00PM PST by NWS Reno NV

* WHAT...Minor flooding is likely for the Susan River, small creeks and streams, and on or near recent burn scars. This does not include the Middle Fork of the Feather or the Pit River in Lassen County. * WHERE...A portion of northeast California, including the following counties, Lassen, Plumas and Sierra. * WHEN...Until noon PST Saturday. * IMPACTS...Minor flooding along low lying areas near the Susan River in and downstream of Susanville, as well as near other creeks, streams, urban areas. Rock and debris may cover roads especially near or below recent burn areas. * ADDITIONAL DETAILS... - At 332 PM PST, Rounds of high elevation snow and heavy rain are forecast today through Saturday morning before transitioning to snow. - Additional rainfall amounts of 1 to 2 inches are expected over the area. The Susan River has been rising quickly as of 3 PM PST Friday afternoon and additional rainfall will cause flooding to be likely. The next river forecast update will be around 8 PM PST. - Some locations that will experience flooding include... Eagle Lake, Termo, Herlong, Beckwourth, Doyle, Blairsden, Plumas Eureka State Park, Graeagle, Chilcoot, Bieber, Sierraville, Nubieber, Stampede Reservoir, Verdi, Susanville, Standish, Janesville, Aspen Grove Campground, Antelope Lake and Spaulding. - http://www.weather.gov/safety/flood For river forecast updates, visit cnrfc.noaa.gov

Flood Warning issued November 22 at 3:42PM PST until November 22 at 6:45PM PST by NWS San Francisco CA

* WHAT...Flooding is ongoing. The heaviest rain has ended and this replaces the Flash Flood Warning. * WHERE...A portion of northern California, including the following county, San Francisco. * WHEN...Until 645 PM PST. * IMPACTS...Flooding of rivers, creeks, streams, and other low-lying and flood-prone locations is imminent or occurring. * ADDITIONAL DETAILS... - At 338 PM PST, Doppler radar indicated heavy rain. Flooding is already occurring in the warned area. Between 1.5 and 3 inches of rain have fallen. - Additional rainfall amounts of 0.5 to 1.5 inches are possible in the warned area. - Some locations that will experience flooding include... San Francisco. - http://www.weather.gov/safety/flood

Flood Advisory issued November 22 at 3:30PM PST until November 23 at 12:30AM PST by NWS San Francisco CA

* WHAT...Urban area and small stream flooding caused by excessive rainfall is expected. * WHERE...A portion of northern California, including the following counties, southeastern San Mateo, northwestern Santa Clara and Santa Cruz. * WHEN...Until 1230 AM PST Saturday. * IMPACTS...Minor flooding in low-lying and poor drainage areas. Water over roadways. * ADDITIONAL DETAILS... - At 330 PM PST, Doppler radar indicated heavy rain. This will cause urban and small stream flooding. Between 0.2 and 1 inch of rain has fallen. - Additional rainfall amounts of 1 to 4 inches are expected over the area. This additional rain will result in minor flooding. - Some locations that will experience flooding include... San Jose, Sunnyvale, Mountain View, Palo Alto, Santa Cruz, Cupertino, Campbell, Menlo Park, Saratoga, Los Gatos, Los Altos, East Palo Alto, Scotts Valley, Capitola, Live Oak, Los Altos Hills, Atherton, Woodside, Boulder Creek and Ben Lomond. - http://www.weather.gov/safety/flood

Flood Advisory issued November 22 at 3:26PM PST until November 22 at 9:00PM PST by NWS Sacramento CA

* WHAT...Urban and small stream flooding caused by excessive rainfall continues. * WHERE...Portions of central and northern California, including the following counties, in central California, Placer. In northern California, Amador, Butte, Colusa, El Dorado, Nevada, Sacramento, Solano, Sutter, Yolo and Yuba. * WHEN...Until 900 PM PST. * IMPACTS...Minor flooding in low-lying and poor drainage areas. Water over roadways. * ADDITIONAL DETAILS... - At 325 PM PST, local law enforcement reported heavy rain in the advisory area. This will cause urban and small stream flooding. - Exercise caution during the afternoon commute. Never drive through flooded roadways. - Some locations that will experience flooding include... Sacramento, Elk Grove, Roseville, Fairfield, Vacaville, Citrus Heights, Folsom, Davis, Rocklin, Woodland, Auburn, Grass Valley, Marysville, Placerville, Jackson, Carmichael, Fair Oaks, El Dorado Hills, Rumsey and Cameron Park. - http://www.weather.gov/safety/flood

Flash Flood Warning issued November 22 at 2:58PM PST until November 22 at 6:00PM PST by NWS San Francisco CA

FFWMTR The National Weather Service in San Francisco has issued a * Flash Flood Warning for... Northwestern Alameda County in northern California... West Central Contra Costa County in northern California... * Until 600 PM PST. * At 258 PM PST, local law enforcement reported flash flooding in the East Bay. Between 0.7 and 1.2 inches of rain have fallen. Additional rainfall amounts of 1 to 3 inches are possible in the warned area. Flash flooding is already occurring. HAZARD...Flash flooding caused by heavy rain. SOURCE...Law enforcement reported. IMPACT...Flash flooding of small creeks and streams, urban areas, highways, streets and underpasses as well as other poor drainage and low-lying areas. * Some locations that will experience flash flooding include... Oakland, Berkeley, Richmond, Alameda, San Pablo, El Cerrito, Albany, Pinole, Piedmont, Emeryville, Kensington, Rollingwood, El Sobrante, Tara Hills, East Richmond Heights, East Richmond Heigts and Bayview-Montalvin.

Wind Advisory issued November 22 at 2:27PM PST until November 23 at 10:00AM PST by NWS San Francisco CA

* WHAT...Southwest winds 15 to 30 mph with gusts up to 55 mph. * WHERE...The city of San Francisco, the East Bay and Santa Clara Hills, Santa Cruz Mountains and San Mateo, the Gabilan Range, the Santa Lucia Range, southern Monterey Bay, and coastal Big Sur. * WHEN...Until 10 AM PST Saturday. * IMPACTS...Gusty winds will blow around unsecured objects. Tree limbs could be blown down and a few power outages may result. The combination of wind and moist soils will increase the risk for downed trees. * ADDITIONAL DETAILS...A narrow frontal rain band will move through the Bay Area and Central Coast today which will result in gusty south winds ahead of and during its passage. Winds will start to ease overnight after the frontal rain band has progressed out of the region.

Flood Warning issued November 22 at 2:26PM PST until November 23 at 5:00PM PST by NWS Sacramento CA

...The Flood Warning continues for the following rivers in California... Sacramento River At Tehama Bridge affecting Tehama County. ...The Flood Warning is extended for the following rivers in California... Sacramento River At Vina Woodson Bridge affecting Tehama County. For the Upper Sacramento River...including Tehama Bridge, Vina Woodson Bridge...Minor flooding is forecast. * WHAT...Minor flooding is forecast. * WHERE...Sacramento River at Vina Woodson Bridge. * WHEN...Until tomorrow afternoon. * IMPACTS...At 183.9 feet, Woodson Bridge Park is closed due to flooding. Water is up to the top steps of the recreation center at Woodson Bridge RV Park and spaces 15-33 begin to take on water on the east bank of the river. * ADDITIONAL DETAILS... - At 1:45 PM PST Friday the stage was 181.7 feet. - Bankfull stage is 180.0 feet. - Forecast...The river is expected to rise above flood stage this afternoon to a crest of 183.7 feet this evening. It will then fall below flood stage just after midnight tonight. - Flood stage is 183.0 feet. - Flood History...This crest compares to a previous crest of 183.8 feet on 02/19/2024. - http://www.weather.gov/safety/flood

Flood Warning issued November 22 at 2:26PM PST until November 23 at 6:30PM PST by NWS Sacramento CA

...The Flood Warning continues for the following rivers in California... Sacramento River At Tehama Bridge affecting Tehama County. ...The Flood Warning is extended for the following rivers in California... Sacramento River At Vina Woodson Bridge affecting Tehama County. For the Upper Sacramento River...including Tehama Bridge, Vina Woodson Bridge...Minor flooding is forecast. * WHAT...Minor flooding is occurring and minor flooding is forecast. * WHERE...Sacramento River at Tehama Bridge. * WHEN...Until tomorrow evening. * IMPACTS...At 206.7 feet, Water into rv park on east side of river. Tires of trailers get wet. At 209.7 feet, Flood stage - Road inside trailer park and turn around site under RR tracks (Tehama/Vina road) become impassible. Water is into area around structures on east side of river. No structural damage. Sheriff's office issues advisory. Makes sure Pelhams Bay, Snug Harbor, River Inn (small trailer parks all in a row on east side of river north of bridge) know of advisory. At 210.7 feet, Between 210 and 211 feet the county park becomes inaccessible. At 211 feet water begins to enter Driftwood RV fishing resort on east bank of river and just north of the county park. * ADDITIONAL DETAILS... - At 2:00 PM PST Friday the stage was 211.7 feet. - Bankfull stage is 206.5 feet. - Recent Activity...The maximum river stage in the 24 hours ending at 2:00 PM PST Friday was 211.8 feet. - Forecast...The river is expected to rise to a crest of 212.0 feet late this afternoon. It will then fall below flood stage just after midnight tonight. - Flood stage is 209.5 feet. - Flood History...This crest compares to a previous crest of 212.3 feet on 02/19/2024. - http://www.weather.gov/safety/flood

Flood Warning issued November 22 at 2:15PM PST until November 23 at 3:15AM PST by NWS San Francisco CA

* WHAT...Urban areas and small streams flooding caused by excessive rainfall continues. * WHERE...Central Sonoma County. * WHEN...Until 315 AM PST Saturday. * IMPACTS...Flooding of rivers, creeks, streams, and other low-lying and flood-prone locations is imminent or occurring. Numerous roads remain closed due to flooding. Low-water crossings are inundated with water and may not be passable. * ADDITIONAL DETAILS... - At 215 PM PST, Doppler radar and automated rain gauges indicated heavy rain. Flooding is already occurring in the warned area. Between 3 and 15 inches of rain have fallen. - Additional rainfall amounts of up to 1 inch are forecast. Additional rises on area creeks, rivers, and streams can be anticipated. - Some locations that will experience flooding include... Santa Rosa, Rohnert Park, Windsor, Healdsburg, Cotati, Larkfield-Wikiup, Roseland, South Santa Rosa Cdp and South Santa Rosa. - http://www.weather.gov/safety/flood

Flood Warning issued November 22 at 2:14PM PST until November 23 at 3:15AM PST by NWS San Francisco CA

* WHAT...Urban areas and small streams flooding caused by excessive rainfall continues. * WHERE...South Central Sonoma County. * WHEN...Until 315 AM PST Saturday. * IMPACTS...Flooding of rivers, creeks, streams, and other low-lying and flood-prone locations is imminent or occurring. Numerous roads remain closed due to flooding. Low-water crossings are inundated with water and may not be passable. * ADDITIONAL DETAILS... - At 213 PM PST, Doppler radar and automated rain gauges indicated heavy rain. Flooding is already occurring in the warned area. Between 3.5 and 7 inches of rain have fallen. - Additional rainfall amounts of 2 to 4.5 inches are possible in the warned area. - Some locations that will experience flooding include... Santa Rosa, Sonoma, Boyes Hot Springs, Eldridge, Glen Ellen, Fetters Hot Springs-Agua Caliente, Fetters Hot Spring, El Verano and Temelec. - http://www.weather.gov/safety/flood

Flood Warning issued November 22 at 2:03PM PST until November 23 at 11:00AM PST by NWS Eureka CA

...The Flood Warning continues for the following rivers in California... Eel River at Fernbridge affecting Humboldt County. For the Eel River...including Fernbridge...Moderate flooding is forecast. * WHAT...Moderate flooding is occurring and moderate flooding is forecast. * WHERE...Eel River at Fernbridge. * WHEN...Until late tomorrow morning. * IMPACTS...At 24.0 feet, Minor flooding of Highway 211 to Ferndale south of Fernbridge. Much of the Eel Delta may be flooded, including areas northwest of Loleta and the western portion of Cannibal Island Road. Flooding will be enhanced for longer duration events. * ADDITIONAL DETAILS... - At 1:15 PM PST Friday the stage was 23.7 feet. - Bankfull stage is 20.0 feet. - Recent Activity...The maximum river stage in the 24 hours ending at 1:15 PM PST Friday was 23.7 feet. - Forecast...The river is expected to fall below flood stage late tonight and continue falling to 8.9 feet early Monday afternoon. - Flood stage is 20.0 feet. - Flood History...This crest compares to a previous crest of 23.6 feet on 01/27/1983. - http://www.weather.gov/safety/flood

Flood Warning issued November 22 at 1:49PM PST until November 22 at 9:37PM PST by NWS Eureka CA

...The Flood Warning continues for the following rivers in California... Russian River near Hopland affecting Mendocino County. Navarro River at Navarro affecting Mendocino County. .The heavy rain has moved out of the area and most of the rivers are cresting now. Additional rain showers are possible, but will not be heavy or widespread enough to impact the rivers this weekend. For the Russian River...including Hopland...Minor flooding is forecast. For the Navarro River...including Navarro...Minor flooding is forecast. * WHAT...Minor flooding is occurring and minor flooding is forecast. * WHERE...Navarro River at Navarro. * WHEN...Until late this evening. * IMPACTS...At 23.0 feet, Flooding of Highway 128 approximately 5 miles east of Highway 1 is certain and the road is closed. Motorists should use alternate routes. * ADDITIONAL DETAILS... - At 1:15 PM PST Friday the stage was 24.6 feet. - Recent Activity...The maximum river stage in the 24 hours ending at 1:15 PM PST Friday was 24.7 feet. - Forecast...The river will fall below flood stage late this afternoon and continue to fall to 11.0 feet early Sunday morning. - Flood stage is 23.0 feet. - Flood History...This crest compares to a previous crest of 24.6 feet on 03/14/2023. - http://www.weather.gov/safety/flood

Flood Warning issued November 22 at 1:49PM PST until November 23 at 4:36AM PST by NWS Eureka CA

...The Flood Warning continues for the following rivers in California... Russian River near Hopland affecting Mendocino County. Navarro River at Navarro affecting Mendocino County. .The heavy rain has moved out of the area and most of the rivers are cresting now. Additional rain showers are possible, but will not be heavy or widespread enough to impact the rivers this weekend. For the Russian River...including Hopland...Minor flooding is forecast. For the Navarro River...including Navarro...Minor flooding is forecast. * WHAT...Minor flooding is occurring and minor flooding is forecast. * WHERE...Russian River near Hopland. * WHEN...Until late tonight. * IMPACTS...At 17.0 feet, Significant flooding of Highway 175 at the approaches to the Russian River bridge. Minor flooding of Highway 222 near Ukiah, and in crop land along the left and right banks of the Russian River near Hopland. * ADDITIONAL DETAILS... - At 1:00 PM PST Friday the stage was 16.8 feet. - Recent Activity...The maximum river stage in the 24 hours ending at 1:00 PM PST Friday was 16.8 feet. - Forecast...The river will fall below flood stage late this afternoon and continue to fall to 5.6 feet early Sunday afternoon. - Flood stage is 15.0 feet. - Flood History...This crest compares to a previous crest of 16.7 feet on 02/14/2019. - http://www.weather.gov/safety/flood

Flood Watch issued November 22 at 1:41PM PST until November 23 at 4:00AM PST by NWS Sacramento CA

* WHAT...Flooding caused by excessive rainfall continues to be possible. * WHERE...A portion of northern California, including the following areas, Central Sacramento Valley, Mountains Southwestern Shasta County to Western Colusa County, Northeast Foothills/Sacramento Valley, Northern Sacramento Valley and Shasta Lake Area / Northern Shasta County. * WHEN...Through 4 AM PST Saturday morning. * IMPACTS...Moderate to heavy rainfall has been observed and is causing flood-related impacts in portions of the Watch area. Extensive street flooding and flooding of creeks and rivers will continue to be possible. Area creeks and streams are running high and could flood with more heavy rain. Even after the rain stops falling, flood impacts will continue as runoff works its way downstream. * ADDITIONAL DETAILS... - http://www.weather.gov/safety/flood

Flood Watch issued November 22 at 1:17PM PST until November 23 at 10:00AM PST by NWS San Francisco CA

* WHAT...Flooding caused by excessive rainfall continues. * WHERE...The North Bay. * WHEN...Through Saturday morning. * IMPACTS...Creeks and streams may rise out of their banks. Flooding may occur in poor drainage and urban areas. Low-water crossings may be flooded. * ADDITIONAL DETAILS... - http://www.weather.gov/safety/flood

Winter Weather Advisory issued November 22 at 12:34PM PST until November 23 at 4:00PM PST by NWS Eureka CA

* WHAT...For the Winter Weather Advisory, snow expected above 4000 ft. Total snow accumulations between 3 and 5 inches. For the Winter Storm Watch, heavy snow possible above 4000 ft. Total snow accumulations between 10 and 14 inches possible. * WHERE...Northern Trinity. * WHEN...For the Winter Weather Advisory, from 4 PM this afternoon to 4 PM PST Saturday. For the Winter Storm Watch, from Sunday morning through late Monday night. * IMPACTS...Travel could be very difficult to impossible. Tire chains may be necessary if travelling through mountain passes. * ADDITIONAL DETAILS...Moderate snow impacting Highway 3 at Scott Mountain Pass.

Winter Storm Watch issued November 22 at 12:34PM PST until November 26 at 4:00AM PST by NWS Eureka CA

* WHAT...For the Winter Weather Advisory, snow expected above 4000 ft. Total snow accumulations between 3 and 5 inches. For the Winter Storm Watch, heavy snow possible above 4000 ft. Total snow accumulations between 10 and 14 inches possible. * WHERE...Northern Trinity. * WHEN...For the Winter Weather Advisory, from 4 PM this afternoon to 4 PM PST Saturday. For the Winter Storm Watch, from Sunday morning through late Monday night. * IMPACTS...Travel could be very difficult to impossible. Tire chains may be necessary if travelling through mountain passes. * ADDITIONAL DETAILS...Moderate snow impacting Highway 3 at Scott Mountain Pass.

Flood Advisory issued November 22 at 12:05PM PST until November 22 at 9:00PM PST by NWS San Francisco CA

* WHAT...Urban area and small stream flooding caused by excessive rainfall is occurring. * WHERE...A portion of northern California, including the following counties, western Alameda and central Contra Costa. * WHEN...Until 900 PM PST Friday. * IMPACTS...Minor flooding in low-lying and poor drainage areas. Water over roadways. * ADDITIONAL DETAILS... - At 1205 PM PST, local law enforcement reported flooding in the advisory area. This is causing urban and small stream flooding. Between 0.3 and 0.7 inches of rain have fallen. - Additional rainfall amounts of 1 to 3 inches are expected over the area. This additional rain will result in minor flooding. - Some locations that will experience flooding include... Oakland, Fremont, Hayward, Concord, Berkeley, Richmond, San Leandro, Mountain View, Alameda, San Ramon, Pleasanton, Union City, Walnut Creek, Pittsburg, Dublin, Newark, Danville, Martinez, Pleasant Hill and Menlo Park. - http://www.weather.gov/safety/flood

Winter Storm Warning issued November 22 at 11:45AM PST until November 26 at 4:00PM PST by NWS Hanford CA

* WHAT...Heavy snow possible above 6500 feet. Total snow accumulations between 10 and 24 inches possible. High elevation snow up to 4 feet. Winds could gust as high as 50 mph. * WHERE...A portion of central California. * WHEN...From 4 PM this afternoon to 4 PM PST Tuesday. * IMPACTS...Roads, and especially bridges and overpasses, will likely become slick and hazardous. Travel could be very difficult to impossible. The hazardous conditions could impact the Friday evening and Monday morning commutes. Gusty winds could bring down tree branches.

Flood Advisory issued November 22 at 11:44AM PST until November 22 at 8:00PM PST by NWS San Francisco CA

* WHAT...Urban area and small stream flooding caused by excessive rainfall is expected. * WHERE...A portion of northern California, including the following counties, southeastern San Francisco and San Mateo. * WHEN...Until 800 PM PST Friday. * IMPACTS...Minor flooding in low-lying and poor drainage areas. Ponding of water in urban or other areas is occurring or is imminent. * ADDITIONAL DETAILS... - At 1144 AM PST, Doppler radar indicated heavy rain. This will cause urban and small stream flooding. Between 0.3 and 0.7 inches of rain have fallen. - Additional rainfall amounts of 1 to 3 inches are expected over the area. This additional rain will result in minor flooding. - Some locations that will experience flooding include... San Francisco, Daly City, San Mateo, Redwood City, Palo Alto, South San Francisco, San Bruno, Pacifica, Menlo Park, Foster City, Burlingame, San Carlos, East Palo Alto, Belmont, Millbrae, Half Moon Bay, Hillsborough, Atherton, Woodside and Highlands-Baywood Park. - http://www.weather.gov/safety/flood

Flood Advisory issued November 22 at 11:37AM PST until November 22 at 8:00PM PST by NWS San Francisco CA

* WHAT...Flooding caused by excessive rainfall is expected. * WHERE...A portion of northern California, including the following county, San Francisco. * WHEN...Until 800 PM PST Friday. * IMPACTS...Minor flooding in low-lying and poor drainage areas. Water over roadways. Ponding of water in urban or other areas is occurring or is imminent. * ADDITIONAL DETAILS... - At 1135 AM PST, Doppler radar indicated heavy rain. Minor flooding is already occurring on I-280 near Geneva Ave. Between 0.3 and 0.7 inches of rain have fallen. - Additional rainfall amounts of 1 to 3 inches are expected over the area. This additional rain will result in minor to moderate flooding. - Some locations that will experience flooding include... San Francisco. - http://www.weather.gov/safety/flood

Flood Advisory issued November 22 at 11:19AM PST until November 22 at 8:00PM PST by NWS Sacramento CA

* WHAT...Flooding caused by excessive rainfall continues. * WHERE...A portion of northern California, including the following counties, Colusa, Glenn, Shasta and Tehama. * WHEN...Until 800 PM PST Friday. * IMPACTS...Rises in small streams and normally dry arroyos. Water over roadways. Overflowing poor drainage areas. Ponding of water in urban or other areas is occurring or is imminent. * ADDITIONAL DETAILS... - At 1117 AM PST, Doppler radar and automated rain gauges have indicated heavy rain over the last 2 days. Minor flooding is already occurring in the advisory area. Between 4 and 11 inches of rain have fallen, locally higher amounts in Shasta County. - While the heaviest rainfall has occurred in this advisory area, runoff will continue to work its way through waterways and cause flood-related impacts. - Some locations that will experience flooding include... Redding, Red Bluff, Corning, Orland, Willows, Elk Creek, Palo Cedro, Alder Springs, Yolla Bolly District Rs, Shasta Dam, Shingletown, Glenn, Shasta Lake, Anderson, Tehama, Rancho Tehama Reserve, Blossom, Flournoy, Henleyville and Paskenta. - http://www.weather.gov/safety/flood

Winter Storm Warning issued November 22 at 11:08AM PST until November 26 at 4:00PM PST by NWS Sacramento CA

* WHAT...Heavy snow expected for elevations above 5500 feet. Total snow accumulations of 1 to 4 feet and up to 5 feet along higher peaks. * WHERE...West Slope Northern Sierra Nevada and Western Plumas County/Lassen Park Counties. * WHEN...From 4 PM this afternoon to 4 PM PST Tuesday. * IMPACTS...Snow-covered roads, chain controls and travel delays are likely which will result in very difficult travel at times above 5500 feet. * ADDITIONAL DETAILS...Snow levels this afternoon will be high from 6000-7000 feet, then quickly lowering to around 5000 feet Saturday morning. Snowfall will decrease in intensity from late Saturday afternoon into Sunday, followed by heavy snow at times again Monday and Tuesday.

Flood Watch issued November 22 at 10:58AM PST until November 22 at 10:00PM PST by NWS Eureka CA

* WHAT...Flooding caused by excessive rainfall continues to be possible. * WHERE...A portion of northwest California, including the following areas, Northern Lake and Southern Lake. * WHEN...Until 10 PM PST this evening. * IMPACTS...There will be an increased risk of rock and land slides along roadways. Excessive runoff may result in flooding of rivers, creeks, streams, and other low-lying and flood-prone locations. Creeks and streams may rise out of their banks. Flooding may occur in poor drainage and urban areas. Low-water crossings may be flooded. Storm drains and ditches may become clogged with debris. Extensive street flooding and flooding of creeks and rivers are possible. Area creeks and streams are running high and could flood with more heavy rain. * ADDITIONAL DETAILS... - An additional 1 to 2 inches of rainfall is expected through this evening. - http://www.weather.gov/safety/flood

Winter Weather Advisory issued November 22 at 10:50AM PST until November 24 at 4:00AM PST by NWS Las Vegas NV

* WHAT...For the Winter Weather Advisory, snow expected above 7000 feet. Total snow accumulations 2 to 8 inches between 7000 to 8500 feet, totals up to 18 inches possible near the crest. Winds gusting as high as 65 mph. For the Winter Storm Watch, heavy snow possible. Total snow accumulations between 1 to 2 feet, higher amounts possible near the crest. Winds could gust as high as 35 mph. * WHERE...Eastern Sierra Slopes. * WHEN...For the Winter Weather Advisory, from 4 PM this afternoon to 4 AM PST Sunday. For the Winter Storm Watch, from Sunday evening through Wednesday morning. * IMPACTS...Travel could be very difficult to impossible. Very strong winds could cause extensive tree damage.

Winter Storm Watch issued November 22 at 10:50AM PST until November 27 at 10:00AM PST by NWS Las Vegas NV

* WHAT...For the Winter Weather Advisory, snow expected above 7000 feet. Total snow accumulations 2 to 8 inches between 7000 to 8500 feet, totals up to 18 inches possible near the crest. Winds gusting as high as 65 mph. For the Winter Storm Watch, heavy snow possible. Total snow accumulations between 1 to 2 feet, higher amounts possible near the crest. Winds could gust as high as 35 mph. * WHERE...Eastern Sierra Slopes. * WHEN...For the Winter Weather Advisory, from 4 PM this afternoon to 4 AM PST Sunday. For the Winter Storm Watch, from Sunday evening through Wednesday morning. * IMPACTS...Travel could be very difficult to impossible. Very strong winds could cause extensive tree damage.

Wind Advisory issued November 22 at 10:34AM PST until November 24 at 4:00AM PST by NWS Las Vegas NV

* WHAT...Southwest winds 25 to 35 mph with gusts up to 55 mph expected. Locally higher gusts possible along the eastern slopes of the Sierra, generally west of US Highway 395. * WHERE...Eastern Sierra Slopes and Owens Valley. * WHEN...From 4 PM this afternoon to 4 AM PST Sunday. * IMPACTS...Gusty winds will blow around unsecured objects and make driving difficult, especially for high profile vehicles. Areas of blowing dust may result in locally reduced visibility. * ADDITIONAL DETAILS...Downslope winds can create sudden gusts which can result in particularly hazardous crosswinds for high profile vehicles.

Flood Advisory issued November 22 at 9:35AM PST until November 23 at 3:15AM PST by NWS San Francisco CA

* WHAT...Urban area and small stream flooding caused by excessive rainfall continues. * WHERE...A portion of northern California, including the following counties, Marin, Napa and Sonoma. * WHEN...Until 315 AM PST Saturday. * IMPACTS...Minor flooding in low-lying and poor drainage areas. Water over roadways. Overflowing poor drainage areas. * ADDITIONAL DETAILS... - At 935 AM PST, Doppler radar and automated rain gauges indicated heavy rain. This is causing urban and small stream flooding. Between 5 and 22 inches of rain have fallen. - Additional rainfall amounts of 1 to 3 inches are expected over the area. This additional rain will result in minor flooding. - Some locations that will experience flooding include... Santa Rosa, Napa, Petaluma, San Rafael, Novato, Rohnert Park, Windsor, American Canyon, Mill Valley, San Anselmo, Larkspur, Healdsburg, Sonoma, Corte Madera, Tiburon, Cloverdale, Fairfax, Sebastopol, Cotati and Sausalito. - http://www.weather.gov/safety/flood

Flood Advisory issued November 22 at 9:01AM PST until November 23 at 9:00AM PST by NWS Sacramento CA

* WHAT...Flooding caused by excessive rainfall is expected. * WHERE...A portion of northern California, including the following counties, Butte, Colusa, Glenn, Lassen, Plumas, Shasta, Sierra, Sutter, Tehama and Yuba. * WHEN...Until 900 AM PST Saturday. * IMPACTS...Minor flooding in low-lying and poor drainage areas. Water over roadways. Ponding of water in urban or other areas is occurring or is imminent. Increasing water levels along streams and creeks with enhanced runoff in the Park Fire burn scar. * ADDITIONAL DETAILS... - At 901 AM PST, Doppler radar and automated rain gauges indicated heavy rain. Minor flooding is already occurring in the advisory area. Between 3 and 10 inches of rain have fallen. - Additional rainfall amounts up to 4 inches are expected over the area. This additional rain will result in minor flooding. - Some locations that will experience flooding include... Chico, Paradise, Oroville, Pulga, Mineral, Brush Creek Rs, Chester, Quincy, Palermo, Shingletown, Glenn, Gridley, East Quincy, Mill Creek, Butte Meadows, Stirling City, Lovelock, De Sabla Powerhouse, Storrie and Forest Ranch. - http://www.weather.gov/safety/flood

Avalanche Watch issued November 22 at 9:00AM PST by NWS Reno NV

AVAREV The following message is transmitted at the request of the U.S. Forest Service Sierra Avalanche Center. The Sierra Avalanche Center in Truckee has issued a BACKCOUNTRY AVALANCHE WATCH for the following areas: NWS Reno NV - NVZ002 (Greater Lake Tahoe)...CAZ072 (Greater Lake Tahoe (CA)) * WHAT...HIGH avalanche danger is expected to occur in the backcountry Friday night and may continue through Saturday. * WHERE...Central Sierra Nevada Mountains between Yuba Pass (Hwy 49) on the north and Ebbetts Pass (Hwy 4) on the south, including the greater Lake Tahoe area. This does not include ski areas and highways where avalanche mitigation programs exist. * WHEN...In effect from Fri 09:00 AM PST to Sat 06:00 AM PST. * IMPACTS...A powerful storm with large amounts of new snow, rain, and strong winds may cause widespread avalanche activity in the mountains. Avalanches large enough to bury people or knock down large trees could occur in backcountry areas. * PRECAUTIONARY / PREPAREDNESS ACTIONS...Very dangerous avalanche conditions may occur Friday night and Saturday. Traveling in, near, or below backcountry avalanche terrain is not recommended. Consult https://www.sierraavalanchecenter.org/ or www.avalanche.org for more detailed information. Similar avalanche danger may exist at locations outside the coverage area of this or any avalanche center.

Flood Warning issued November 22 at 8:32AM PST by NWS San Francisco CA

...The Flood Warning is extended for the following rivers in California... Russian River at Johnsons Beach at Guerneville affecting Sonoma County. .Minor flood stage is now expected to arrive this afternoon or evening. For the Russian River...including Johnsons Beach at Guerneville... Minor flooding is forecast. * WHAT...Minor flooding is forecast. * WHERE...Russian River at Johnsons Beach at Guerneville. * WHEN...From this afternoon until further notice. * IMPACTS...At 34.0 feet, In Guerneville flooding begins at Johnsons Resort, Parkers Resort, Creekside Resort and Riverside Park. In Northwood lower Redwood Drive begins to flood. * ADDITIONAL DETAILS... - At 8:00 AM PST Friday the stage was 28.6 feet. - Bankfull stage is 32.0 feet. - Forecast...The river is expected to rise above flood stage this evening and continue rising to a crest of 34.2 feet late tonight. - Flood stage is 32.0 feet. - Flood History...This crest compares to a previous crest of 34.2 feet on 12/25/1983. - http://www.weather.gov/safety/flood

Red Flag Warning issued November 22 at 8:28AM PST until November 22 at 7:00PM PST by NWS Reno NV

The National Weather Service in Reno has issued a Red Flag Warning for gusty winds and low humidity, which is in effect until 7 PM PST this evening. * Affected Area...Fire Weather Zone 274 Southern Mono County, Fire Weather Zone 421 Southern Sierra Front including Alpine, Northern Mono, Southern Lyon, and Western Mineral Counties and Fire Weather Zone 429 Lahontan Basin including Churchill and Eastern Mineral Counties. * Winds...South to southwest winds 25 to 35 mph with gusts up to 65 mph. Wind prone areas may reach gusts of 80 mph. * Humidity...As low as 12 to 18 percent. * Duration...3 to 9 hours of critical conditions. * Impacts...The combination of gusty winds and low humidity can cause fire to rapidly grow in size and intensity before first responders can contain them.

Winter Storm Warning issued November 22 at 3:48AM PST until November 23 at 10:00PM PST by NWS Reno NV

* WHAT...For the Winter Storm Warning Today: Heavy snow for Mono County above 7000 feet. Snow accumulations of 10 to 18 inches with isolated amounts up to 2 feet. Southwest winds 30 to 40 mph with gusts up to 65 mph. Ridge wind gusts will reach up to 125 mph. For the Winter Storm Watch Sunday-Tuesday: Heavy snow with 4 to 8 inches below 7000 feet. 1 to 3 feet possible above 7000 feet. * WHERE...Mono County. * WHEN...For the Winter Storm Warning, from 4 PM this afternoon to 10 PM PST Saturday. For the Winter Storm Watch, from late Sunday night through Tuesday afternoon. * IMPACTS...Travel could be very difficult to impossible. The hazardous conditions could impact the Friday evening and Monday morning commutes. Very strong winds could cause extensive damage to trees and power lines.

Winter Storm Warning issued November 22 at 3:48AM PST until November 23 at 10:00PM PST by NWS Reno NV

* WHAT...For the Winter Storm Warning today: Heavy snow. Snow accumulations between 1 to 2 feet above 7,000 feet and up to 3 feet at the highest peaks. 2 to 6 inches below 7,000 feet. Southwest winds 25 to 35 mph with gusts up to 55 mph. Ridge wind gusts will reach up to 125 mph. For the Winter Storm Watch Sunday-Tuesday: Heavy snow with 3-8 inches below 7000 feet and 1 to 3 feet above 7000 feet. * WHERE...Greater Lake Tahoe Area, and Lassen-Eastern Plumas-Eastern Sierra Counties. * WHEN...For the Winter Storm Warning, from 10 AM this morning to 10 PM PST Saturday. For the Winter Storm Watch, from late Sunday night through Tuesday afternoon. * IMPACTS...Travel could be very difficult to impossible. The hazardous conditions could impact the Friday evening and Monday morning commutes. Very strong winds could cause extensive damage to trees and power lines.

Winter Storm Watch issued November 22 at 3:48AM PST until November 26 at 4:00PM PST by NWS Reno NV

* WHAT...For the Winter Storm Warning today: Heavy snow. Snow accumulations between 1 to 2 feet above 7,000 feet and up to 3 feet at the highest peaks. 2 to 6 inches below 7,000 feet. Southwest winds 25 to 35 mph with gusts up to 55 mph. Ridge wind gusts will reach up to 125 mph. For the Winter Storm Watch Sunday-Tuesday: Heavy snow with 3-8 inches below 7000 feet and 1 to 3 feet above 7000 feet. * WHERE...Greater Lake Tahoe Area, and Lassen-Eastern Plumas-Eastern Sierra Counties. * WHEN...For the Winter Storm Warning, from 10 AM this morning to 10 PM PST Saturday. For the Winter Storm Watch, from late Sunday night through Tuesday afternoon. * IMPACTS...Travel could be very difficult to impossible. The hazardous conditions could impact the Friday evening and Monday morning commutes. Very strong winds could cause extensive damage to trees and power lines.

Winter Storm Watch issued November 22 at 3:48AM PST until November 26 at 4:00PM PST by NWS Reno NV

* WHAT...For the Winter Storm Warning Today: Heavy snow for Mono County above 7000 feet. Snow accumulations of 10 to 18 inches with isolated amounts up to 2 feet. Southwest winds 30 to 40 mph with gusts up to 65 mph. Ridge wind gusts will reach up to 125 mph. For the Winter Storm Watch Sunday-Tuesday: Heavy snow with 4 to 8 inches below 7000 feet. 1 to 3 feet possible above 7000 feet. * WHERE...Mono County. * WHEN...For the Winter Storm Warning, from 4 PM this afternoon to 10 PM PST Saturday. For the Winter Storm Watch, from late Sunday night through Tuesday afternoon. * IMPACTS...Travel could be very difficult to impossible. The hazardous conditions could impact the Friday evening and Monday morning commutes. Very strong winds could cause extensive damage to trees and power lines.

Wind Advisory issued November 22 at 12:06AM PST until November 23 at 6:00AM PST by NWS Los Angeles/Oxnard CA

* WHAT...South winds 10 to 20 mph with gusts up to 35 mph expected. * WHERE...San Luis Obispo County Beaches and San Luis Obispo County Interior Valleys. * WHEN...From 8 PM this evening to 6 AM PST Saturday. * IMPACTS...Gusty winds will blow around unsecured objects. Tree limbs could be blown down and a few power outages may result.

Flood Warning issued November 21 at 2:04PM PST until November 22 at 8:00PM PST by NWS Eureka CA

* WHAT...Urban areas and small streams flooding caused by excessive rainfall is expected. * WHERE...A portion of northwest California, including the following county, southwestern Mendocino. * WHEN...Until 800 PM PST Friday. * IMPACTS...Prolonged, heavy rainfall is causing the Garcia River at Point arena to rise significantly enough to flood Highway 1 between Flumeville and Stornetta. The Garcia River is forecast to peak near 12 AM Friday at 15 feet. Attitudinal heavy rainfall is forecast to continue through tonight. * ADDITIONAL DETAILS... - At 204 PM PST, Doppler radar indicated heavy rain. Flooding is ongoing or expected to begin shortly in the warned area. - Some locations that will experience flooding include... Mainly rural areas of Southwestern Mendocino County. - http://www.weather.gov/safety/flood

Flood Warning issued November 21 at 12:55PM PST until November 23 at 4:00AM PST by NWS Medford OR

* WHAT...Urban area and small stream flooding caused by rain and snowmelt continues. * WHERE...A portion of northern California, including the following county, Siskiyou. * WHEN...Until 400 AM PST Saturday. * IMPACTS...Flooding of rivers, creeks, streams, and other low-lying and flood-prone locations is imminent or occurring. * ADDITIONAL DETAILS... - At 1240 PM PST, radar, satellite and rain gauge data indicate heavy rain and snowmelt in the warned area. Over the past 18 hours, the snow level has risen to above 6000 feet, and heavy rains of up to several inches have fallen on top of two to three feet of new snow. As a result, flooding is imminent. - Additional rainfall amounts of 3 to 8 inches are possible in the warned area through Saturday. - Some locations that will experience flooding include... Mount Shasta, Weed, Dunsmuir, Pilgrim Creek Snow Park, Trout Creek Campground, Cattle Camp Campground, Fowlers Camp Campground And McCloud Falls, McCloud, Tennant, Mount Shasta Summit Plateau, Mount Shasta Ski Park Highway, Mount Shasta Bunny Flat Trail, Mcbride Springs Campground, Pondosa, Four Corners Snow Park, I 5 Black Butte Summit, Carrick, Edgewood, Medicine Lake Campground and Callahan. - http://www.weather.gov/safety/flood