Greenbrae, 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 Greenbrae.

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

Flood Advisory issued December 13 at 11:24PM PST until December 14 at 2:30AM PST by NWS San Francisco CA

* WHAT...Flooding caused by excessive rainfall is expected. * WHERE...A portion of northern California, including the following counties, Marin and southeastern Sonoma. * WHEN...Until 230 AM PST. * IMPACTS...Minor flooding in low-lying and poor drainage areas. * ADDITIONAL DETAILS... - At 1124 PM PST, Doppler radar indicated heavy rain. Minor flooding is ongoing or expected to begin shortly in the advisory area. Up to 1 inch of rain has fallen. - Additional rainfall amounts of 1 to 2 inches are expected over the area. This additional rain will result in minor flooding. - Some locations that will experience flooding include... Petaluma, San Rafael, Novato, Rohnert Park, Mill Valley, San Anselmo, Larkspur, Corte Madera, Tiburon, Fairfax, Cotati, Sausalito, Point Reyes Station, San Geronimo, Lucas Valley- Marinwood, Stinson Beach, Black Point-Green Point, Kentfield, Tomales and Muir Beach. - http://www.weather.gov/safety/flood

Wind Advisory issued December 13 at 9:58PM PST until December 14 at 4:00AM PST by NWS San Francisco CA

* WHAT...For the Wind Advisory, southeast winds 10 to 20 mph with gusts up to 40 mph expected. For the High Wind Warning, south winds 20 to 30 mph with gusts up to 55 mph expected. * WHERE...Southern Monterey Bay and the Big Sur Coast. * WHEN...For the Wind Advisory, until 4 AM PST Saturday. For the High Wind Warning, from 4 AM to 10 AM PST Saturday. * IMPACTS...Damaging winds could down trees, snap power lines, and result in property damage. Widespread power outages are possible. Travel could be extremely difficult and hazardous, especially for high profile vehicles. The combination of wind and moist soils will increase the risk for downed trees.

Wind Advisory issued December 13 at 9:58PM PST until December 14 at 7:00AM PST by NWS San Francisco CA

* WHAT...South winds 15 to 25 mph with gusts up to 55 mph. * WHERE...East Bay Interior Valleys, North Bay Interior Mountains, North Bay Interior Valleys, and San Francisco Bay Shoreline. * WHEN...Until 7 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.

High Wind Warning issued December 13 at 9:58PM PST until December 14 at 7:00AM PST by NWS San Francisco CA

* WHAT...South winds 25 to 35 mph with gusts up to 60 mph expected. * WHERE...The Marin Hills, Western Sonoma County Hills, Northern Monterey Bay, The Santa Cruz Mountains, San Francisco, Coastal North Bay Including Point Reyes National Seashore, San Francisco Peninsula Coast, and East Bay Hills. * WHEN...Until 7 AM PST Saturday. * IMPACTS...Damaging winds could down trees, snap power lines, and result in property damage. Widespread power outages are possible. Travel could be extremely difficult and hazardous, especially for high profile vehicles. The combination of wind and moist soils will increase the risk for downed trees.

Wind Advisory issued December 13 at 9:58PM PST until December 14 at 10:00AM PST by NWS San Francisco CA

* WHAT...South winds 15 to 25 mph with gusts up to 50 mph expected. * WHERE...Interior Central Coast. * WHEN...From 1 AM to 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.

Wind Advisory issued December 13 at 9:58PM PST until December 14 at 10:00AM PST by NWS San Francisco CA

* WHAT...South winds 20 to 30 mph with gusts up to 50 mph. * WHERE...The Santa Clara Valley and Eastern Hills. * 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.

High Wind Warning issued December 13 at 9:58PM PST until December 14 at 10:00AM PST by NWS San Francisco CA

* WHAT...For the Wind Advisory, southeast winds 10 to 20 mph with gusts up to 40 mph expected. For the High Wind Warning, south winds 20 to 30 mph with gusts up to 55 mph expected. * WHERE...Southern Monterey Bay and the Big Sur Coast. * WHEN...For the Wind Advisory, until 4 AM PST Saturday. For the High Wind Warning, from 4 AM to 10 AM PST Saturday. * IMPACTS...Damaging winds could down trees, snap power lines, and result in property damage. Widespread power outages are possible. Travel could be extremely difficult and hazardous, especially for high profile vehicles. The combination of wind and moist soils will increase the risk for downed trees.

Wind Advisory issued December 13 at 9:53PM PST until December 14 at 7:00AM PST by NWS Medford OR

* WHAT...South winds 35 to 45 mph with gusts up to 65 mph expected. * WHERE...Portions of Lake County, eastern Klamath County, and Modoc County. This includes portions of highway 140 east of Lakeview, highways 395, 31, and 299 east of Alturas and the cities of Lakeview and Valley Falls. * WHEN...Until 7 AM PST Saturday. * IMPACTS...Gusty winds will blow around unsecured objects. Tree limbs could be blown down and a few power outages may result. * ADDITIONAL DETAILS...Winds will be strongest over the ridges, where gusts could briefly approach high wind warning criteria.

High Wind Warning issued December 13 at 9:53PM PST until December 14 at 7:00AM PST by NWS Medford OR

* WHAT...South winds 35 to 45 mph with gusts up to 60 mph. * WHERE...Portions of the Shasta Valley, including Interstate 5 from Weed to Grenada. This includes the cities of Yreka, Grenada, and Weed. * WHEN...Until 7 AM PST Saturday. * IMPACTS...Damaging winds could blow down trees and power lines, and may damage unsecured property. Power outages are possible. Travel could be difficult, especially for high profile vehicles.

Beach Hazards Statement issued December 13 at 9:23PM PST until December 15 at 10:00AM PST by NWS San Diego CA

* WHAT...Minor tidal overflow expected. * WHERE...San Diego County Coastal Areas and Orange County Coastal Areas. * WHEN...Through Sunday morning. Each morning during the highest tides of the day. * IMPACTS...Low lying locations, including parking lots, could have minor tidal overflow each morning during astronomical high tides of around 6 to 7 feet. This includes Imperial Beach, La Jolla Shores, Del Mar and Cardiff in San Diego County, and Newport Beach, Sunset Beach and Seal Beach in Orange County. * ADDITIONAL DETAILS...Time and height of highest tides each day: Newport Beach - Saturday: 6.9 feet at 728 AM. La Jolla - Saturday: 6.8 feet at 725 AM. Newport Beach - Sunday: 6.9 feet at 810 AM. La Jolla - Sunday: 6.8 feet at 807 AM.

Flood Advisory issued December 13 at 9:20PM PST until December 14 at 12:15AM PST by NWS Eureka CA

* WHAT...Flooding caused by excessive rainfall is expected. * WHERE...Western Mendocino County including the coast and the highway 101 corridor north of Ukiah. * WHEN...Until 1215 AM PST. * IMPACTS...Minor flooding in low-lying and poor drainage areas. Water over roadways. There will be an increased risk of rock and land slides along roadways. * ADDITIONAL DETAILS... - At 918 PM PST, Doppler radar and automated rain gauges indicated heavy rain. Rapid river rises have already caused minor flooding in the advisory area. Between 0.4 and 1 inch of rain has fallen. - Additional rainfall amounts of 0.5 to 1.5 inches are expected over the area. This additional rain will result in minor flooding. - Some locations that will experience flooding include... Fort Bragg, Willits, Point Arena, Laytonville, Albion, Philo, Rockport, Boonville, Leggett, Gualala, Comptche, Branscomb, Navarro, Dos Rios, Manchester, Piercy and Yorkville. - http://www.weather.gov/safety/flood

Flood Warning issued December 13 at 8:49PM PST until December 15 at 3:15AM PST by NWS Eureka CA

...The Flood Warning continues for the following rivers in California... Russian River near Hopland affecting Mendocino County. For the Russian River...including Hopland...Minor flooding is forecast. * WHAT...Minor flooding is forecast. * WHERE...Russian River near Hopland. * WHEN...From late tonight to late Saturday night. * 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 8:00 PM PST Friday the stage was 7.5 feet. - Bankfull stage is 21.0 feet. - Forecast...The river will rise above flood stage just after midnight tonight to 16.1 feet tomorrow morning. It will then fall below flood stage tomorrow afternoon to 5.8 feet Monday morning. It will rise to 7.8 feet Monday afternoon. It will then fall again and remain below flood stage. - Flood stage is 15.0 feet. - Flood History...This crest compares to a previous crest of 16.1 feet on 03/10/2023. - http://www.weather.gov/safety/flood

Flood Warning issued December 13 at 8:48PM PST until December 14 at 10:20PM PST by NWS Eureka CA

...The Flood Warning continues for the following rivers in California... Navarro River at Navarro affecting Mendocino County. For the Navarro River...including Navarro...Minor flooding is forecast. * WHAT...Minor flooding is forecast. * WHERE...Navarro River at Navarro. * WHEN...From Saturday afternoon to Saturday evening. * IMPACTS...At 23.0 feet, Flooding of Highway 128 approximately 5 miles east of Highway 1 is certain and the road will be closed. Motorists should use alternate routes. * ADDITIONAL DETAILS... - At 8:15 PM PST Friday the stage was 7.8 feet. - Forecast...The river will rise above flood stage to 23.4 feet early tomorrow afternoon. It will then fall below flood stage tomorrow afternoon to 11.1 feet early Monday morning. It will rise to 11.2 feet early Monday morning. It will then fall to 10.2 feet early Monday afternoon. It will then rise again but remain below flood stage. - Flood stage is 23.0 feet. - Flood History...This crest compares to a previous crest of 23.7 feet on 02/14/2019. - http://www.weather.gov/safety/flood

Flood Advisory issued December 13 at 8:27PM PST until December 14 at 4:30AM PST by NWS Eureka CA

* WHAT...Flooding caused by excessive rainfall is expected. * WHERE...A portion of northwest California, including the following county, southern Humboldt. * WHEN...Until 430 AM PST Saturday. * IMPACTS...Minor flooding in low-lying and poor drainage areas. Rises in small streams and normally dry arroyos. Ponding of water in urban or other areas is occurring or is imminent. * ADDITIONAL DETAILS... - At 827 PM PST, satellite estimates indicate heavy rain in the advisory area. Overflowing poor drainage areas will cause minor flooding in the advisory area. Between 1 and 2 inches of rain have fallen. - Additional rainfall amounts of 1.5 to 2.5 inches are expected over the area. This additional rain will result in minor flooding. - Some locations that will experience flooding include... Eureka, Grizzly Creek Redwoods State Park, Honeydew, Garberville, Shelter Cove, Richardson Grove State Park, Fortuna, Rio Dell, Weott, Pepperwood, Myers Flat, Bridgeville, Carlotta, Scotia, Redway, Petrolia, Whitehorn, Dinsmore, Richardson Grove and Alderpoint. - http://www.weather.gov/safety/flood

Winter Storm Warning issued December 13 at 7:48PM PST until December 14 at 4:00PM PST by NWS Eureka CA

* WHAT...Heavy snow above 3000 feet. Total accumulation of 10 to 23 inches around Scott Mountain Pass. Total accumulation of up to 1 foot down to 3000 feet. * WHERE...Northern Trinity county above 3000 feet. * WHEN...Until 4 PM PST Saturday. * IMPACTS...Travel could be very difficult. * ADDITIONAL DETAILS...This is expected to impact numerous locations along highway 3 as well Buckhorn Summit on highway 299.

Wind Advisory issued December 13 at 7:46PM PST until December 14 at 6:00PM PST by NWS Los Angeles/Oxnard CA

* WHAT...Southwest winds 20 to 30 mph with gusts up to 50 mph expected. * WHERE...Cuyama Valley, San Luis Obispo County Beaches, San Luis Obispo County Inland Central Coast, Santa Lucia Mountains, and Southern Salinas Valley. * WHEN...From 7 AM to 6 PM PST Saturday. * IMPACTS...Gusty winds will blow around unsecured objects. Tree limbs could be blown down and a few power outages may result.

High Wind Warning issued December 13 at 7:46PM PST until December 14 at 6:00PM PST by NWS Los Angeles/Oxnard CA

* WHAT...Southwest winds 30 to 40 mph with gusts up to 60 mph expected. * WHERE...San Luis Obispo County Interior Valleys, San Luis Obispo County Mountains, and Santa Barbara County Interior Mountains. * WHEN...From 7 AM to 6 PM PST Saturday. * IMPACTS...Damaging winds could blow down trees and power lines. Widespread power outages are possible. Travel will be difficult, especially for high profile vehicles. * ADDITIONAL DETAILS...Local advisory level gusts are possible late Friday night into early Saturday morning.

Flood Advisory issued December 13 at 7:20PM PST until December 14 at 1:15AM PST by NWS Eureka CA

* WHAT...Flooding caused by excessive rainfall is expected. * WHERE...A portion of northwest California, including the following counties, south central Del Norte and northeastern Humboldt. * WHEN...Until 115 AM PST. * IMPACTS...Minor flooding in low-lying and poor drainage areas. Rises in small streams and normally dry arroyos. * ADDITIONAL DETAILS... - At 720 PM PST, gauge reports indicated heavy rain. Minor flooding is ongoing or expected to begin shortly in the advisory area. Between 0.5 and 1 inch of rain has fallen. - Additional rainfall amounts of 1 to 2.5 inches are expected over the area. This additional rain will result in minor flooding. - Some locations that will experience flooding include... Eureka, Arcata, Hoopa, Willow Creek, Orick, Orleans, Klamath, Trinidad, Weitchpec, Westhaven-Moonstone, McKinleyville, Maple Creek, Blue Lake, Fieldbrook, Arcata Arpt, Kneeland, Freshwater, Myrtletown, Samoa and Klamath Glen. - http://www.weather.gov/safety/flood

High Surf Advisory issued December 13 at 7:15PM PST until December 14 at 7:00PM PST by NWS San Francisco CA

* WHAT...Large breaking waves of 18 to 22 feet expected. * WHERE...Coastal North Bay Including Point Reyes National Seashore, San Francisco Peninsula Coast and Southern Monterey Bay and Big Sur Coast Counties. * WHEN...Until 7 PM PST Saturday. * IMPACTS...Dangerous swimming and surfing conditions and localized beach erosion.

High Surf Advisory issued December 13 at 7:15PM PST until December 14 at 7:00PM PST by NWS San Francisco CA

* WHAT...For the Coastal Flood Advisory, minor coastal flooding expected due to King Tides. For the High Surf Advisory, large breaking waves of 18 to 22 feet expected. * WHERE...For the Coastal Flood Advisory, minor coastal flooding expected due to King Tides. For the High Surf Advisory, large breaking waves of 18 to 22 feet expected. * WHEN...For the Coastal Flood Advisory, until 1 PM PST Monday. For the High Surf Advisory, until 7 PM PST Saturday. * IMPACTS...Flooding of lots, parks, and roads with only isolated road closures expected. Dangerous swimming and surfing conditions and localized beach erosion. * ADDITIONAL DETAILS...For the Coastal Flood Advisory, tidal levels are increasing as a result of higher astronomical tides. Low lying areas within the San Francisco Bay Area may see minor flooding as a result during high tide. San Francisco highest tides are 7.07 ft at 9:37 am Saturday, 7.02 ft at 10:22 am Sunday, and 6.82 ft at 11:08 am Monday.

Coastal Flood Advisory issued December 13 at 7:15PM PST until December 16 at 1:00PM PST by NWS San Francisco CA

* WHAT...For the Coastal Flood Advisory, minor coastal flooding expected due to King Tides. For the High Surf Advisory, large breaking waves of 18 to 22 feet expected. * WHERE...For the Coastal Flood Advisory, minor coastal flooding expected due to King Tides. For the High Surf Advisory, large breaking waves of 18 to 22 feet expected. * WHEN...For the Coastal Flood Advisory, until 1 PM PST Monday. For the High Surf Advisory, until 7 PM PST Saturday. * IMPACTS...Flooding of lots, parks, and roads with only isolated road closures expected. Dangerous swimming and surfing conditions and localized beach erosion. * ADDITIONAL DETAILS...For the Coastal Flood Advisory, tidal levels are increasing as a result of higher astronomical tides. Low lying areas within the San Francisco Bay Area may see minor flooding as a result during high tide. San Francisco highest tides are 7.07 ft at 9:37 am Saturday, 7.02 ft at 10:22 am Sunday, and 6.82 ft at 11:08 am Monday.

Coastal Flood Advisory issued December 13 at 7:15PM PST until December 16 at 1:00PM PST by NWS San Francisco CA

* WHAT...Minor coastal flooding. * WHERE...Low-lying regions of the North Bay and areas along the San Francisco Bay shoreline. * WHEN...Until 1 PM PST Monday. * IMPACTS...Flooding of lots, parks, and roads with only isolated road closures expected.

Flood Advisory issued December 13 at 6:45PM PST until December 14 at 12:45AM PST by NWS Eureka CA

* WHAT...Flooding caused by excessive rainfall is expected. * WHERE...A portion of northwest California, including the following county, northwestern Humboldt. * WHEN...Until 1245 AM PST. * IMPACTS...Minor flooding in low-lying and poor drainage areas. Rises in small streams and normally dry arroyos. Water over roadways. There will be an increased risk of rock and land slides along roadways. * ADDITIONAL DETAILS... - At 644 PM PST, local law enforcement reported heavy rain in the advisory area. Minor flooding is ongoing or expected to begin shortly. Between 0.5 and 1 inch of rain has fallen. - Additional rainfall amounts of 1 to 2 inches are expected over the area. This additional rain will result in minor flooding. - Some locations that will experience flooding include... Mainly rural areas of Northwestern Humboldt County. - US101 N/ Patricks Point Dr. - http://www.weather.gov/safety/flood

Wind Advisory issued December 13 at 5:47PM PST until December 14 at 2:00PM PST by NWS Hanford CA

* WHAT...South winds 10 to 20 mph with gusts up to 40 mph expected. * WHERE...Buena Vista, Coalinga - Avenal, Frazier Mountain Communities, West Side Mountains South of 198, and West Side Mountains north of 198. * WHEN...From 10 PM this evening to 2 PM PST Saturday. * IMPACTS...Gusty winds will blow around unsecured objects. Tree limbs could be blown down and a few power outages may result.

Winter Storm Warning issued December 13 at 5:47PM PST until December 14 at 10:00PM PST by NWS Hanford CA

* WHAT...Heavy snow expected. Total snow accumulations up to 24 inches. Winds gusting as high as 50 mph. * WHERE...A portion of central California. * WHEN...From 10 PM this evening to 10 PM PST Saturday. * IMPACTS...Roads, and especially bridges and overpasses, will likely become slick and hazardous.

Flood Watch issued December 13 at 4:54PM PST until December 15 at 4:00AM PST by NWS San Francisco CA

* WHAT...A combination of abnormally high tide, elevated surf, and excessive rainfall may result in flooding at Carmel River Lagoon. * WHERE...Flood-prone areas around Carmel River Lagoon including River Park Place, locations south of 15th Avenue and Mission Ranch. * WHEN...From 4 AM PST Saturday through late Saturday night. * IMPACTS...Excessive runoff may result in flooding of low-lying and flood-prone locations around the Carmel River Lagoon. Flooding may occur at the Carmel River State Beach parking lot and potentially adjacent neighborhoods south of 15th Avenue. * ADDITIONAL DETAILS... - Forecast excessive rainfall runoff with high tides and large surf may result in the rise of the Carmel River at the Carmel River Lagoon. - http://www.weather.gov/safety/flood

Flood Watch issued December 13 at 4:54PM PST until December 15 at 4:00PM PST by NWS San Francisco CA

* WHAT...Flooding caused by excessive rainfall continues to be possible. * WHERE...The North Bay. * WHEN...Through Sunday afternoon. * IMPACTS...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. * ADDITIONAL DETAILS... - Significant rainfall is expected Friday and Saturday as an intense low pressure system comes into the state. Expected rainfall totals are 2-3 inches in the valleys, locally up to 5 inches in the higher elevations. The larger rivers will crest on Sunday, after the heavy rain. - http://www.weather.gov/safety/flood

Wind Advisory issued December 13 at 2:52PM PST until December 14 at 12:00PM PST by NWS Sacramento CA

* WHAT...Southeast winds 20 to 30 mph with gusts 45 to 55 mph expected. * WHERE...Carquinez Strait and Delta, Sacramento Valley, Northeast Foothills, and Northern San Joaquin Valley. * WHEN...From 4 PM PST today until noon PST Saturday. * IMPACTS...Gusty winds will blow around unsecured objects, including holiday decorations. Tree limbs could be blown down and a few power outages may result.

Winter Storm Warning issued December 13 at 1:57PM PST until December 14 at 4:00PM PST by NWS Medford OR

* WHAT...For the Winter Storm Warning, heavy snow. Additional snow accumulations between 10 and 20 inches. Winds gusting as high as 65 mph. For the Winter Weather Advisory, snow. Additional snow accumulations between 5 and 10 inches. Winds gusting as high as 60 mph. * WHERE...North Central and Southeast Siskiyou County and Western Siskiyou County Counties. * WHEN...Until 4 PM PST Saturday. * IMPACTS...Travel could be very difficult to impossible. Widespread blowing snow could significantly reduce visibility. The hazardous conditions could impact the Friday evening commute. Very strong winds could cause extensive damage to trees and power lines.

Winter Storm Warning issued December 13 at 1:57PM PST until December 14 at 4:00PM PST by NWS Medford OR

* WHAT...Heavy snow. Additional snow accumulations between 10 and 20 inches, and up to 30 inches above 6000 feet. Winds gusting as high as 60 mph. * WHERE...South Central Siskiyou County County. * WHEN...Until 4 PM PST Saturday. * IMPACTS...Travel could be very difficult to impossible. Widespread blowing snow could significantly reduce visibility. The hazardous conditions could impact the Friday evening commute. Strong winds could cause extensive damage to trees and power lines.

Winter Weather Advisory issued December 13 at 1:57PM PST until December 14 at 4:00PM PST by NWS Medford OR

* WHAT...For the Winter Storm Warning, heavy snow. Additional snow accumulations between 10 and 20 inches. Winds gusting as high as 65 mph. For the Winter Weather Advisory, snow. Additional snow accumulations between 5 and 10 inches. Winds gusting as high as 60 mph. * WHERE...North Central and Southeast Siskiyou County and Western Siskiyou County Counties. * WHEN...Until 4 PM PST Saturday. * IMPACTS...Travel could be very difficult to impossible. Widespread blowing snow could significantly reduce visibility. The hazardous conditions could impact the Friday evening commute. Very strong winds could cause extensive damage to trees and power lines.

Winter Storm Warning issued December 13 at 1:51PM PST until December 14 at 10:00PM PST by NWS Sacramento CA

* WHAT...Heavy snow expected. For the Coastal Range/Shasta County mountains above 3500 feet, 6 to 24 inches expected, locally higher over peaks. For the Southern Cascades/Sierra above 5000 feet, 1 to 3 feet expected, locally higher over the peaks. Winds gusting as high as 55 MPH. * WHERE...Burney Basin / Eastern Shasta County, Mountains Southwestern Shasta County to Western Colusa County, Shasta Lake Area / Northern Shasta County, West Slope Northern Sierra Nevada, and Western Plumas County/Lassen Park Counties. * WHEN...Until 10 PM PST Saturday. * IMPACTS...Travel could be very difficult to impossible. The hazardous conditions could impact commutes. Gusty winds could bring down tree branches. * ADDITIONAL DETAILS...Periods of moderate to heavy snow today into Saturday afternoon, heaviest late tonight into Saturday morning.

Wind Advisory issued December 13 at 1:31PM PST until December 14 at 4:00AM PST by NWS Reno NV

* WHAT...South winds 20 to 30 mph with gusts up to 55 mph. * WHERE...In California, Surprise Valley California. In Nevada, Northern Washoe County. * WHEN...From 7 PM this evening to 4 AM PST Saturday. * IMPACTS...Gusty winds will blow around unsecured objects. Tree limbs could be blown down and a few power outages may result.

Coastal Flood Warning issued December 13 at 1:28PM PST until December 14 at 12:00PM PST by NWS Eureka CA

* WHAT...High astronomical tides and large surf will cause moderate flooding in low lying areas along the Redwood Coast. Up to three quarter foot of saltwater inundation above ground level is possible in low lying areas near shorelines and tidal waterways. Between 9.3 and 9.6 feet MLLW at the North Spit tide gauge is predicted. * WHERE...Northern Humboldt Coast County. * WHEN...From 8 AM to noon PST Saturday. High tide is at 9:56 AM at the Humboldt Bay North Spit tide gauge. Saltwater inundation will be possible 1 to 2 hours before and after high tide. * IMPACTS...Low lying areas could be inundated. These impacts will include, but not limited to, roadways in King Salmon and the Arcata bottoms. Shoreline erosion could occur.

Coastal Flood Warning issued December 13 at 1:28PM PST until December 14 at 12:00PM PST by NWS Eureka CA

* WHAT...High astronomical tide and large surf will cause moderate flooding in low lying areas along the Mendocino Coast. Up to one half foot of saltwater inundation above ground level is possible in low lying areas near shorelines and tidal waterways. Between 7.8 and 8.1 feet MLLW at the Pt Arena tide gauge is predicted. * WHERE...Mendocino Coast County. * WHEN...From 8 AM to noon PST Saturday. High tide is at 9:02 AM at the Pt Arena tide gauge. Saltwater inundation will be possible 1 to 2 hours before and after high tide. * IMPACTS...Impacts could include, but are not limited to, flooding along sections of highway 1, along with several beaches and parking lots. Minor flooding could occur at low lying areas of Noyo Harbor and Arena Cove. Shoreline erosion could occur.

Coastal Flood Advisory issued December 13 at 1:28PM PST until December 14 at 12:00PM PST by NWS Eureka CA

* WHAT...High astronomical tides will cause minor flooding in low lying areas. Up to one quarter foot of saltwater inundation above ground level is possible near shorelines and tidal waterways. Between 8.6 and 9.2 feet MLLW at the Crescent City tide gauge is predicted. * WHERE...Coastal Del Norte County. * WHEN...From 8 AM to noon PST Saturday. High tide is at 9:44 AM at the Crescent City tide gauge. Saltwater inundation will be possible 1 to 2 hours before and after high tide. * IMPACTS...Flooding of low lying areas are possible, including along Pebble Beach Rd and along Highway 101 by South Beach south of Crescent City.

High Surf Advisory issued December 13 at 1:28PM PST until December 15 at 10:00PM PST by NWS Los Angeles/Oxnard CA

* WHAT...Large breaking waves of 10 to 15 feet with dangerous rip currents. Combined with high tides near 7 feet, minor and shallow coastal flooding. * WHERE...San Luis Obispo County Beaches and Santa Barbara County Central Coast Beaches. * WHEN...Until 10 PM PST Sunday. * IMPACTS...There is an increased risk for ocean drowning. Rip currents can pull swimmers and surfers out to sea. Large breaking waves can cause injury, wash people off beaches and rocks, and capsize small boats near shore. Pooling of sea water is possible around high tide at beach and harbor areas that is uncommon with normal tidal ranges. Enhanced beach erosion is also possible. No significant damage is expected. * ADDITIONAL DETAILS...High tides will occur between 6 and 9 am.

High Surf Advisory issued December 13 at 1:28PM PST until December 15 at 10:00PM PST by NWS Los Angeles/Oxnard CA

* WHAT...Large breaking waves of 5 to 8 feet with dangerous rip currents. Combined with high tides near 7 feet, minor and shallow coastal flooding. * WHERE...Ventura County Beaches. * WHEN...Until 10 PM PST Sunday. * IMPACTS...There is an increased risk for ocean drowning. Rip currents can pull swimmers and surfers out to sea. Large breaking waves can cause injury, wash people off beaches and rocks, and capsize small boats near shore. Pooling of sea water is possible around high tide at beach and harbor areas that is uncommon with normal tidal ranges. Enhanced beach erosion is also possible. No significant damage is expected. * ADDITIONAL DETAILS...High tides will occur between 6 and 9 am.

Beach Hazards Statement issued December 13 at 1:28PM PST until December 15 at 10:00PM PST by NWS Los Angeles/Oxnard CA

* WHAT...Dangerous rip currents and breaking waves due to elevated surf of 3 to 6 feet expected. Combined with high tides near 7 feet, minor and shallow coastal flooding. * WHERE...Santa Barbara County Southwestern Coast, Santa Barbara County Southeastern Coast, Malibu Coast and Los Angeles County Beaches. * WHEN...Through Sunday evening. * IMPACTS...There is an increased risk for ocean drowning. Rip currents can pull swimmers and surfers out to sea. Large breaking waves can wash people off beaches and rocks, and capsize small boats near shore. Pooling of sea water is possible around high tide at beach and harbor areas that is uncommon with normal tidal ranges. Enhanced beach erosion is also possible. No significant damage is expected. * ADDITIONAL DETAILS...High tides will occur between 6 and 9 am.

Winter Weather Advisory issued December 13 at 1:14PM PST until December 14 at 10:00PM PST by NWS Las Vegas NV

* WHAT...Snow expected. Total snow accumulations 4 to 6 inches between 7000 and 9000 feet. Up to 12 inches near the Sierra Crest. Winds gusting as high as 60 mph. * WHERE...Eastern Sierra Slopes. * WHEN...From 1 AM to 10 PM PST Saturday. * IMPACTS...Plan on slippery road conditions above 7000 feet. Gusty winds could bring down tree branches.

Winter Storm Warning issued December 13 at 1:04PM PST until December 14 at 10:00PM PST by NWS Reno NV

* WHAT...Heavy snow. Snow accumulations of 3 to 8 inches below 6500 ft with 8 to 20 inches above 6500 feet. Snow accumulations of 6 to 14 inches west of Highway 89 with up to 30 inches along the Sierra crest. Ridge winds gusting up to 120 mph. Southwest winds 20 to 30 mph with gusts up to 50 mph and wave heights of 2 to 5 feet on Lake Tahoe. * WHERE...Greater Lake Tahoe Area. * WHEN...Until 10 PM PST Saturday. * IMPACTS...Travel could be very difficult to impossible. The hazardous conditions could impact the Friday and Saturday commutes. Very strong winds could cause extensive damage to trees and power lines. Small boats, kayaks and paddle boards will be prone to capsizing and should remain off lake waters until conditions improve.

Winter Storm Warning issued December 13 at 1:04PM PST until December 14 at 10:00PM PST by NWS Reno NV

* WHAT...Heavy snow. Snow accumulations between 3 to 8 inches below 5500 feet west of Highway 395 with 12 to 20 inches above 5500 feet. Localized amounts up to 3 feet on the highest peaks. Wind gusts as high as 45 mph. Ridge wind gusts as high as 75 mph. * WHERE...Lassen-Eastern Plumas-Eastern Sierra Counties. * WHEN...Until 10 PM PST Saturday. * IMPACTS...Travel could be very difficult to impossible. The hazardous conditions could impact the commutes Friday and Saturday. Gusty winds could bring down tree branches.

Winter Storm Warning issued December 13 at 1:04PM PST until December 14 at 10:00PM PST by NWS Reno NV

* WHAT...Heavy snow. Snow accumulations between 8 to 20 inches west of Highway 395. Below 7000 feet, snow accumulations of 2 to 6 inches. Expect localized areas of up to 2 feet along the highest peaks. Wind gusts up to 65 mph with ridge gusts as high as 120 mph. * WHERE...Mono County. * WHEN...From 1 AM to 10 PM PST Saturday. * IMPACTS...Travel could be very difficult to impossible. The hazardous conditions could impact the Friday and Saturday commutes. Very strong winds could cause extensive damage to trees and power lines.

Wind Advisory issued December 13 at 10:18AM PST until December 14 at 9:00PM PST by NWS Las Vegas NV

* WHAT...Downslope west winds gusting 40 to 55 mph expected. * WHERE...Owens Valley. * WHEN...From 9 AM to 9 PM PST Saturday. * IMPACTS...Gusty winds will blow around unsecured objects. Tree limbs could be blown down and a few power outages may result. * ADDITIONAL DETAILS...Sections of Highway 395 near the Sierra foothills will be susceptible to strong crosswinds.

Avalanche Watch issued December 13 at 8:37AM 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 beginning early Saturday morning and continuing into Sunday morning. * 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 08:15 PST to Sat 05:15 PST. * IMPACTS...A powerful storm with large amounts of new snow and strong winds may cause widespread avalanche activity in the mountains. Avalanches large enough to bury people and/or knock down large trees could occur in backcountry areas. * PRECAUTIONARY / PREPAREDNESS ACTIONS...Very dangerous avalanche conditions are likely on 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.

Flood Watch issued December 13 at 8:36AM PST until December 14 at 3:00PM PST by NWS Eureka CA

* WHAT...Flooding caused by excessive rainfall continues to be possible. * WHERE...A portion of northwest California, including the following area, Northern Humboldt Coast. * WHEN...From 2 PM PST this afternoon through Saturday afternoon. * IMPACTS...There will be an increased risk of rock and land slides along roadways. Flooding may occur in poor drainage and urban areas. Storm drains and ditches may become clogged with debris. * ADDITIONAL DETAILS... - Two to three inches of rain expected from Friday morning through Saturday afternoon. This will combine with saturated soils to produce flooding of small streams and low lying areas. High tides will increase flooding in areas that drain into Humboldt Bay. - http://www.weather.gov/safety/flood

Flood Watch issued December 13 at 8:36AM PST until December 14 at 3:00PM PST by NWS Eureka CA

* WHAT...Flooding caused by excessive rainfall continues to be possible. * WHERE...A portion of northwest California, including Mendocino and Lake Counties. * WHEN...From 2 PM PST this afternoon through Saturday afternoon. * IMPACTS...There will be an increased risk of rock and land slides along roadways. Creeks and streams may rise out of their banks. Flooding may occur in poor drainage and urban areas. * ADDITIONAL DETAILS... - Two to five inches of rain expected from Friday morning through Saturday afternoon. This will combine with saturated soils to produce flooding of small streams and low lying areas. - http://www.weather.gov/safety/flood

Flood Watch issued December 13 at 8:36AM PST until December 14 at 3:00PM 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, Southern Humboldt Interior and Southwestern Humboldt. * WHEN...From 2 PM PST this afternoon through Saturday afternoon. * IMPACTS...There will be an increased risk of rock and land slides along roadways. * ADDITIONAL DETAILS... - Three to eight inches of rain expected from Friday morning through Saturday afternoon. This will combine with saturated soils to produce flooding of small streams and low lying areas. - http://www.weather.gov/safety/flood

Avalanche Watch issued December 13 at 8:28AM PST by NWS Reno NV

AVAREV The following message is transmitted at the request of the Eastern 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 beginning early Saturday morning and continuing into Sunday morning. * 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 08:15 PST to Sat 05:15 PST. * IMPACTS...A powerful storm with large amounts of new snow and strong winds may cause widespread avalanche activity in the mountains. Avalanches large enough to bury people and/or knock down large trees could occur in backcountry areas. * PRECAUTIONARY / PREPAREDNESS ACTIONS...Very dangerous avalanche conditions are likely on 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.

The High Wind Watch has been replaced. Please see the latest information from NWS San Francisco CA on this developing situation.

The High Wind Watch has been replaced. Please see the latest information from NWS San Francisco CA on this developing situation.

The High Wind Watch has been replaced. Please see the latest information from NWS San Francisco CA on this developing situation.

The High Wind Watch has been replaced. Please see the latest information from NWS San Francisco CA on this developing situation.

The High Wind Watch has been replaced. Please see the latest information from NWS San Francisco CA on this developing situation.

The High Wind Watch has been replaced. Please see the latest information from NWS San Francisco CA on this developing situation.

The High Wind Watch has been replaced. Please see the latest information from NWS San Francisco CA on this developing situation.

The High Wind Watch has been replaced. Please see the latest information from NWS San Francisco CA on this developing situation.