Santa Clara, 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 Santa Clara.

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

Flood Advisory issued November 21 at 1:13AM PST until November 21 at 3:30AM PST by NWS San Francisco CA

* WHAT...Urban area and small stream flooding caused by excessive rainfall continues. * WHERE...Most of Marin County and southern Sonoma County, including the cities of San Rafael and Petaluma. * WHEN...Until 330 AM PST. * IMPACTS...Minor flooding in low-lying and poor drainage areas. Rises in small streams and normally dry arroyos. Overflowing poor drainage areas. * ADDITIONAL DETAILS... - At 112 AM PST, Doppler radar and automated rain gauges indicated heavy rain. This will cause urban and small stream flooding. Between 2 and 5 inches of rain have fallen. - Additional rainfall amounts of 2 to 5 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, Mill Valley, San Anselmo, Larkspur, Corte Madera, Fairfax, Cotati, Point Reyes Station, San Geronimo, Tomales, Lucas Valley-Marinwood, Dillon Beach, Black Point-Green Point, Kentfield, Ross, Inverness, Lagunitas-Forest Knolls and Woodacre. - http://www.weather.gov/safety/flood

Flood Watch issued November 21 at 1:08AM PST until November 23 at 4:00AM PST by NWS Sacramento CA

* WHAT...Prolonged periods of moderate to heavy rain with amounts of 3 to 6 inches expected, and up to 8 to 12 inches possible in the foothills. Flooding caused by excessive rainfall is possible. * WHERE...A portion of northern California, including the following areas, Northern and Central Sacramento Valley, Mountains Southwestern Shasta County to Western Colusa County, Northeast Foothills/Sacramento Valley, and Shasta Lake Area / Northern Shasta County. * WHEN...Through 4 AM PST Saturday morning. * IMPACTS...Excessive runoff may result in sharp rises of rivers, creeks, and streams, and ponding of water or flooding on roadways and other low-lying locations. * ADDITIONAL DETAILS... - http://www.weather.gov/safety/flood

Flood Advisory issued November 21 at 12:40AM PST until November 21 at 6:45AM PST by NWS Eureka CA

* WHAT...Flooding caused by excessive rainfall is occurring. * WHERE...A portion of northwest California, including the following county, northwestern Humboldt. * WHEN...Until 645 AM PST Thursday. * IMPACTS...Minor flooding in low-lying and poor drainage areas. Water over roadways. * ADDITIONAL DETAILS... - At 1240 AM PST, local law enforcement reported flooding in the advisory area. Minor flooding is already occurring. Between 2 and 2.5 inches of rain have fallen. - Additional rainfall amounts of 1.5 to 2.5 inches are expected over the area today. This additional rain will result in minor flooding. - Some locations that will experience flooding include... Arcata. - http://www.weather.gov/safety/flood

High Surf Advisory issued November 21 at 12:19AM PST until November 21 at 10:00AM PST by NWS Los Angeles/Oxnard CA

* WHAT...Large breaking waves of 10 to 12 feet for northwest and west facing beaches with dangerous rip currents. * WHERE...San Luis Obispo County Beaches and Santa Barbara County Central Coast Beaches. * WHEN...Until 10 AM PST this morning. * 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.

Flood Advisory issued November 20 at 11:27PM PST until November 21 at 1:30AM PST by NWS Eureka CA

* WHAT...Small stream flooding caused by excessive rainfall continues. * WHERE...A portion of central California, including the following county, southeastern Lake. * WHEN...Until 130 AM PST. * IMPACTS...Minor flooding in low-lying and poor drainage areas. Water over roadways. * ADDITIONAL DETAILS... - At 1126 PM PST, Doppler radar and automated rain gauges indicated heavy rain. This will cause small stream flooding. Between 0.5 and 1.5 inches of rain have fallen. - Additional rainfall amounts of 1 to 2 inches are expected over the area this evening. This additional rain will continue to result in minor flooding. - Some locations that will experience flooding include... Middletown, Clearlake, Seigler Springs, Ettawa Springs, Anderson Springs, Whispering Pines, Forest Lake, Adams, Loch Lomond, Hobergs, Hidden Valley Lake, Lower Lake and Cobb. - http://www.weather.gov/safety/flood

Flood Advisory issued November 20 at 11:18PM PST until November 21 at 5:15AM PST by NWS San Francisco CA

* WHAT...Urban area and small stream flooding caused by excessive rainfall is expected. * WHERE...Southern Napa County including the city of Napa. * WHEN...Until 515 AM PST. * IMPACTS...Minor flooding in low-lying and poor drainage areas. Rises in small streams and normally dry arroyos. Water over roadways. * ADDITIONAL DETAILS... - At 1118 PM PST, Doppler radar and automated rain gauges indicated heavy rain. This will cause urban and small stream flooding. Between 2 and 4 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... Napa and American Canyon. - http://www.weather.gov/safety/flood

Flood Advisory issued November 20 at 11:17PM PST until November 21 at 5:15AM PST by NWS San Francisco CA

* WHAT...Urban area and small stream flooding caused by excessive rainfall is expected. * WHERE...Northwestern Alameda County north of downtown Oakland, western Contra Costa County and southern Marin County. * WHEN...Until 515 AM PST. * IMPACTS...Minor flooding in low-lying and poor drainage areas. Rises in small streams and normally dry arroyos. Water over roadways. * ADDITIONAL DETAILS... - At 1115 PM PST, Doppler radar and automated rain gauges indicated heavy rain. This will cause urban and small stream flooding. Up to 1 inch of rain has fallen. - Several flooding reports are already coming in from Contra Costa County. 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... Concord, Berkeley, Richmond, Mountain View, Walnut Creek, Martinez, Pleasant Hill, San Pablo, Lafayette, El Cerrito, Hercules, Albany, Pinole, Orinda, Moraga, Mill Valley, Larkspur, Piedmont and Emeryville. - http://www.weather.gov/safety/flood

Flood Advisory issued November 20 at 11:12PM PST until November 21 at 2:15AM PST by NWS Eureka CA

* WHAT...Flooding caused by excessive rainfall is expected. * WHERE...A portion of northwest California, including the following counties, southeastern Humboldt, northwestern Mendocino and southwestern Trinity. * WHEN...Until 215 AM PST. * IMPACTS...Minor flooding in low-lying and poor drainage areas. Water over roadways. * ADDITIONAL DETAILS... - At 1112 PM PST, Doppler radar indicated heavy rain due to thunderstorms. Minor flooding is ongoing or expected to begin shortly in the advisory area. Between 4 and 6 inches of rain have fallen. - Additional rainfall amounts of 1 to 2 inches are expected over the area through 2 AM. This additional rain will result in minor flooding. - Some locations that will experience flooding include... Garberville, Richardson Grove State Park, Laytonville, Alderpoint, Richardson Grove, Redway, Ruth, Leggett, Dinsmore, Bridgeville, Fort Seward, Zenia, Blocksburg, Benbow, Miranda and Piercy. - http://www.weather.gov/safety/flood

Flood Warning issued November 20 at 10:46PM PST until November 23 at 12:00AM PST by NWS Medford OR

* WHAT...Flooding caused by excessive rainfall and snowmelt is expected. * WHERE...A portion of northern California, including the following county, Siskiyou, including the cities of Mount Shasta City, Weed, Callahan and Tennant. * WHEN...Until midnight PST Friday Night. * IMPACTS...Flooding of rivers, creeks, streams, and other low-lying and flood-prone locations is imminent or occurring. * ADDITIONAL DETAILS... - At 1042 PM PST, Satellite estimates and rain gauge data indicate heavy rain and snowmelt in the warned area. Flooding is ongoing or expected to begin shortly. Between 2 and 6 inches of rain have fallen. - Additional rainfall amounts of 3 to 7 inches are possible in the warned area. Many areas that received heavy snowfall earlier have switched over to rain. Rain can melt the snow and cause a higher runoff response than rainfall alone. - 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

Flood Watch issued November 20 at 10:42PM 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 Mendocino Coast, Northeastern Mendocino Interior, Northwestern Mendocino Interior, Southeastern Mendocino Interior and Southwestern Mendocino Interior. * WHEN...Through Friday 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 4 to 10 inches of rain is expected to fall tonight through early Friday. - http://www.weather.gov/safety/flood

Flood Watch issued November 20 at 10:42PM 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 Northern Humboldt Coast, Northern Humboldt Interior, Southern Humboldt Interior and Southwestern Humboldt. * WHEN...Through Friday 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 3 to 10 inches of rain is expected to fall tonight tonight through Friday morning. The heaviest amounts will be in the King Range. Additional light rain expected to continue Friday. - http://www.weather.gov/safety/flood

Flood Watch issued November 20 at 10:42PM 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 area, Southern Trinity. * WHEN...Through Friday 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 5 to 10 inches of rain is expected to fall mainly tonight and Thursday with occasional light rain on Friday. - http://www.weather.gov/safety/flood

Flood Watch issued November 20 at 10:42PM 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 Coastal Del Norte and Del Norte Interior. * WHEN...Through Friday 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 0.5 to 2 inches of rain is expected to fall tonight and early Thursday. Then heavier rain is expected again with an additional 2 to 5 inches possible Thursday afternoon and Thursday night. Additional light rain expected to continue Friday. - http://www.weather.gov/safety/flood

Flood Watch issued November 20 at 10:42PM 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...Through Friday 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 3 to 7 inches is expected to fall tonight through Friday. - http://www.weather.gov/safety/flood

Flood Advisory issued November 20 at 10:27PM PST until November 21 at 2:15AM PST by NWS San Francisco CA

* WHAT...Urban area and small stream flooding caused by excessive rainfall continues. * WHERE...Areas near Calistoga, St. Helena, Yountville, Lake Berryessa, and the city of Sonoma in northeastern Sonoma and northern and central Napa counties. * WHEN...Until 215 AM PST. * IMPACTS...Minor flooding in low-lying and poor drainage areas. Rises in small streams and normally dry arroyos. Overflowing poor drainage areas. * ADDITIONAL DETAILS... - At 1026 PM PST, Doppler radar and automated rain gauges indicated heavy rain. This will cause urban and small stream flooding. Between 3 and 5 inches of rain have 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... Napa, Sonoma, St. Helena, Calistoga, Boyes Hot Springs, Yountville, Angwin, Deer Park, Glen Ellen, Eldridge, Fetters Hot Spring, Fetters Hot Springs-Agua Caliente, El Verano and Temelec. - http://www.weather.gov/safety/flood

Winter Weather Advisory issued November 20 at 9:53PM PST until November 21 at 7:00AM PST by NWS Medford OR

* WHAT...Wet snow above 4500 feet. Additional snow accumulations 3 to 6 inches. * WHERE...Central and Southeast Siskiyou County. This includes Snowmans Summit on Highway 89 and the higher terrain around Mount Shasta. * WHEN...Until 7 AM PST Thursday. * IMPACTS...Travel could be very difficult with reduced visibility. The hazardous conditions could impact the Thursday morning commute. * ADDITIONAL DETAILS...Snow levels will gradually rise to around 6000 feet early Thursday morning with snow changing to rain.

High Wind Watch issued November 20 at 9:51PM PST until November 22 at 4:00AM PST by NWS Eureka CA

* WHAT...South winds 25 to 35 mph with gusts up to 65 mph possible. * WHERE...Del Norte County, and Humboldt County. * WHEN...From Thursday afternoon through late Thursday night. * IMPACTS...Damaging winds could blow down trees and power lines. Widespread power outages are possible. Travel could be difficult, especially for high profile vehicles. Wind gusts will be particularly strong along windward ridges and exposed coastal headlands. There is an increased risk of tree branches and other debris on roadways.

Wind Advisory issued November 20 at 9:51PM PST until November 22 at 4:00AM PST by NWS Eureka CA

* WHAT...South winds 20 to 30 mph with gusts up to 50 mph expected. * WHERE...Mendocino Coast. * WHEN...Until 4 AM PST Friday. * IMPACTS...Wind gusts will be particularly strong along windward ridges and exposed coastal headlands. There is an increased risk of tree branches and other debris on roadways. Gusty winds will blow around unsecured objects. Tree limbs could be blown down and a few power outages may result.

Wind Advisory issued November 20 at 9:50PM PST until November 21 at 7:00AM PST by NWS Sacramento CA

* WHAT...Southeast winds 15 to 25 mph with gusts 35 to 45 mph. * WHERE...Central and Northern Sacramento Valley and Northeast Foothills * WHEN...Until 7 AM PST Thursday. * IMPACTS...Gusty winds will blow around unsecured objects. Tree limbs could be blown down and a few power outages may result.

Flood Advisory issued November 20 at 9:21PM PST until November 21 at 3:15AM PST by NWS San Francisco CA

* WHAT...Urban area and small stream flooding caused by excessive rainfall is ongoing. * WHERE...Northern and central Sonoma County, including the Sonoma coastal ranges, the 101 corridor including the city of Santa Rosa, and the Mayacamas. * WHEN...Until 315 AM PST. * IMPACTS...Minor flooding in low-lying and poor drainage areas. Rises in small streams and normally dry arroyos. Overflowing poor drainage areas. * ADDITIONAL DETAILS... - At 919 PM PST, Doppler radar and automated rain gauges indicated heavy rain. This is causing urban and small stream flooding. Between 3 and 6 inches of rain have fallen. - Colgan Creek, Santa Rosa Creek, and Laguna de Santa Rosa are experiencing minor flooding, and the risk for minor flooding remains along Green Valley Creek. Roads have been closed due to flooding. 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... Santa Rosa, Rohnert Park, Windsor, Healdsburg, Cloverdale, Sebastopol, Cotati, Larkfield-Wikiup, Roseland, South Santa Rosa Cdp, Forestville, Guerneville, Monte Rio, Graton, Occidental and South Santa Rosa. - http://www.weather.gov/safety/flood

Winter Storm Warning issued November 20 at 9:20PM PST until November 21 at 4:00AM PST by NWS Sacramento CA

* WHAT...Heavy wet snow. Additional snow accumulations 2 to 5 inches. Winds gusting as high as 45 mph. * WHERE...Burney Basin / Eastern Shasta County, West Slope Northern Sierra Nevada, and Western Plumas County/Lassen Park Counties. * WHEN...Until 4 AM PST Thursday. * IMPACTS...Slick travel conditions expected, with snow covered roads and chain controls likely. Gusty winds could bring down tree branches. * ADDITIONAL DETAILS...Snow levels 5000 to 6500 feet.

Winter Storm Warning issued November 20 at 9:17PM PST until November 21 at 3:00AM PST by NWS Eureka CA

* WHAT...Heavy snow expected. Additional accumulations of 12 to 18 inches above 3500 feet, 4 to 6 inches between 2500 to 3500 feet and less than an inch below 2500 feet. Snow levels rising through this evening and overnight. * WHERE...Northeastern Trinity. * WHEN...Until 3 AM PST Thursday. * IMPACTS...Roads, and especially bridges and overpasses, will likely become slick and hazardous. The strong winds and weight of snow on tree limbs may down power lines and could cause sporadic power outages. Travel could be very difficult. Tire chains may be necessary if travelling through mountain passes. * ADDITIONAL DETAILS...This includes highway 3 in multiple areas north of Weaverville.

Frost Advisory issued November 20 at 8:05PM PST until November 21 at 8:00AM PST by NWS Los Angeles/Oxnard CA

* WHAT...Temperatures as low as 30 will result in frost formation. * WHERE...Calabasas and Agoura Hills and Ojai Valley. * WHEN...From 2 AM to 8 AM PST Thursday. * IMPACTS...Frost could harm sensitive outdoor vegetation. Sensitive outdoor plants may be killed if left uncovered.

Lake Wind Advisory issued November 20 at 7:23PM PST until November 21 at 4:00AM PST by NWS Reno NV

* WHAT...Southwest winds 15 to 20 mph with gusts up to 35 mph and waves 2 to 3 feet. * WHERE...Greater Lake Tahoe Area. * WHEN...Until 4 AM PST Thursday. * IMPACTS...Small boats, kayaks and paddle boards will be prone to capsizing and should remain off lake waters until conditions improve.

High Wind Warning issued November 20 at 6:41PM PST until November 22 at 10:00AM PST by NWS Medford OR

* WHAT...South winds 25 to 40 mph with gusts up to 60 mph. * WHERE...The Shasta Valley in central Siskiyou COunty, including Weed, Grenada, Montague, and portions of Interstate 5 and Highway 97. * WHEN...Until 10 AM PST Friday. * IMPACTS...Damaging winds will blow down trees and power lines. Widespread power outages are expected. Travel will be difficult, especially for high profile vehicles. * ADDITIONAL DETAILS...Gusty winds persist overnight, but could ease for a time into Thursday afternoon. Strong winds are likely to redevelop Thursday evening with gusts to 60 mph into Friday morning.

High Wind Warning issued November 20 at 6:41PM PST until November 22 at 10:00AM PST by NWS Medford OR

* WHAT...South winds 25 to 40 mph with gusts up to 60 mph. * WHERE...Portions of Lake and Modoc counties and far eastern Klamath County, including Lakeview, Valley Falls, Bly, Paisley, Summer Lake, Silver Lake, Adel, Fort Rock, the Warner and Hart mountains, and portions of Highways 395, 31, and 140. Northeast Siskiyou and southwest Klamath counties, including Dorris, Macdoel, Klamath Falls, Bonanza, and portions of Highways 97, 140, 39, and 139. * WHEN...Until 10 AM PST Friday. * IMPACTS...Damaging winds will blow down trees and power lines. Widespread power outages are expected. Travel will be difficult, especially for high profile vehicles. * ADDITIONAL DETAILS...Gusty winds persist overnight, but could ease for a time into Thursday afternoon. Strong winds are likely to redevelop Thursday evening with gusts to 60 mph into Friday morning.

Flood Watch issued November 20 at 2:43PM PST until November 23 at 1:30AM PST by NWS Eureka CA

...The Flood Watch is extended for the following rivers in California... Russian River near Hopland affecting Southeastern Mendocino Interior zone. Eel River at Fernbridge affecting Northern Humboldt Coast zone. For the Russian River...including Hopland...flooding is possible. For the Eel River...including Fernbridge...flooding is possible. * WHAT...Flooding is possible. * WHERE...Russian River near Hopland. * WHEN...From Friday morning to early Saturday morning. * IMPACTS...At 15.0 feet, Flooding of Highway 175 is expected at the approaches to the Russian River bridge. Expect flooding of cropland on the right bank of river. * ADDITIONAL DETAILS... - At 1:45 PM PST Wednesday the stage was 1.9 feet. - Forecast...Flood stage may be reached late Friday morning. - Flood stage is 15.0 feet. - http://www.weather.gov/safety/flood

Flood Watch issued November 20 at 2:43PM PST until November 23 at 11:24AM PST by NWS Eureka CA

...The Flood Watch is extended for the following rivers in California... Russian River near Hopland affecting Southeastern Mendocino Interior zone. Eel River at Fernbridge affecting Northern Humboldt Coast zone. For the Russian River...including Hopland...flooding is possible. For the Eel River...including Fernbridge...flooding is possible. * WHAT...Flooding is possible. * WHERE...Eel River at Fernbridge. * WHEN...From Thursday evening to late Saturday morning. * IMPACTS...At 20.0 feet, Significant flooding of the western portions of Cannibal Island Road, Camp Weott Road, the Salt and Old Rivers, and all adjacent low-lying areas. Flooding in these areas is exaggerated when crest timing is coincident with high tides and strong onshore winds, and for longer duration events. A Special Action Advisory is being issued to all owners of livestock in low-lying areas of the Eel Delta. Owners of livestock should consider taking appropriate action to protect livestock. At 22.0 feet, The western half of the Eel Delta may be completely flooded, especially if at or above this level for an extended period of time. This includes areas northwest of Loleta and Cannibal Island Road. A Special Action Advisory is being issued to all owners of livestock in low-lying areas of the Eel River Delta. Owners of livestock should take appropriate action to protect their animals. * ADDITIONAL DETAILS... - At 2:15 PM PST Wednesday the stage was 2.4 feet. - Forecast...Flood stage may be reached late tomorrow evening. - Flood stage is 20.0 feet. - http://www.weather.gov/safety/flood

Flood Watch issued November 20 at 2:34PM PST until November 23 at 4:00AM PST by NWS San Francisco CA

* WHAT...Flooding caused by excessive rainfall continues to be possible. * WHERE...The North Bay. * WHEN...Through late Friday night. * 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... - Light to moderate rain is continuing across the watch area. Two to four inches of rain have already fallen in the valley regions with up to six inches of rain in the higher elevations. Areas of the Sonoma County valleys have already reported minor flooding and road closures. - http://www.weather.gov/safety/flood

Flood Advisory issued November 20 at 2:18PM PST until November 23 at 12:00PM PST by NWS Reno NV

* WHAT...Minor flooding is forecast 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. * WHERE...Northeast California including Lassen, eastern Plumas, and eastern Sierra counties. * WHEN...Until noon PST Saturday. Flows are expected to rise though the day Thursday into Friday with peak flows occurring late Friday to early Saturday morning. * 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 210 PM PST, Rounds of high elevation snow and heavy rain are forecast today through Saturday morning before transitioning to snow. - Additional rainfall amounts of 3 to 6 inches are expected over the area. This additional rain will result in minor flooding. - 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

High Surf Advisory issued November 20 at 2:07PM PST until November 22 at 6:00AM PST by NWS San Francisco CA

* WHAT...Large breaking waves between 14 to 19 ft along southwest facing beaches and between 19 to 22 ft along well exposed west facing beaches. * WHERE...San Francisco, Coastal North Bay Including Point Reyes National Seashore, San Francisco Peninsula Coast and Southern Monterey Bay and Big Sur Coast Counties. * WHEN...Until 6 AM PST Friday. * IMPACTS...Dangerous swimming and surfing conditions and localized beach erosion. Large waves can sweep across the beach without warning, pulling people into the sea from rocks, jetties and beaches. Sudden immersion in cold water can result in cold water shock even for the most experienced swimmers. Cold water shock can result in dramatic changes in breathing, heart rate and blood pressure, greatly increasing the risk of drowning in rough open waters.

Beach Hazards Statement issued November 20 at 2:07PM PST until November 22 at 6:00AM PST by NWS San Francisco CA

* WHAT...A moderate period northwest swell will result in a more energetic surf zone and an increased risk of sneaker waves and rip currents. Breaking waves of 10 to 13 ft are expected with some potential for breaking waves up to 15 ft to develop. * WHERE...Northern Monterey Bay County. * WHEN...Through late Thursday night. * IMPACTS...Dangerous swimming and surfing conditions. Large waves can sweep across the beach without warning, pulling people into the sea from rocks, jetties, and beaches. Sudden immersion in cold water can result in cold water shock even for the most experienced swimmers. Cold water shock can result in dramatic changes in breathing, heart rate and blood pressure, greatly increasing the risk of drowning in rough open waters.

Wind Advisory issued November 20 at 2:02PM PST until November 21 at 6:00AM PST by NWS San Francisco CA

* WHAT...South winds 20 to 30 mph with gusts up to 50 mph. * WHERE...San Francisco, Marin Coastal Range, Sonoma Coastal Range, North Bay Interior Mountains, North Bay Interior Valleys, San Francisco Bay Shoreline, San Francisco Peninsula Coast * WHEN...Until 6 AM PST Thursday. * IMPACTS...Gusty winds could blow around unsecured objects. Tree limbs could be blown down and a few power outages may result.

Flood Warning issued November 20 at 12:45PM PST until November 23 at 12:00AM PST by NWS Medford OR

* WHAT...Flooding caused by excessive rainfall and snow melt is expected. * WHERE...Portions of southwest Oregon, including Coos, Curry, Jackson, and Josephine counties and western Siskiyou County in northern California. * WHEN...Until midnight PST Friday Night. * IMPACTS...Flooding of rivers, creeks, streams, and other low-lying and flood-prone locations is expected. * ADDITIONAL DETAILS... - At 1227 PM PST, satellite estimates and rain gauge data indicate heavy rain in the warned area. Between 1 and 6 inches of rain have fallen. - Additional rainfall amounts of 3 to 7 inches are possible in the warned area. Some areas will receive snowfall and then switch to rainfall. Rain can melt the snow and cause a higher runoff response than rainfall alone. - http://www.weather.gov/safety/flood

Avalanche Warning issued November 18 at 10:44PM PST by NWS Medford OR

AVWMFR The Mount Shasta Avalanche Center has issued a BACKCOUNTRY AVALANCHE WARNING for the following areas: NWS Medford OR - CAZ082 (South Central Siskiyou County). * WHAT...An exceptionally powerful atmospheric river will impact the Mount Shasta region. Prolonged periods of heavy snowfall, along with rain-on-snow will create high avalanche danger. * WHERE...Avalanche terrain of Mount Shasta, Castle Lake, the Eddy Mountains, and Ash Creek Butte area east of Mount Shasta. * WHEN...In effect from Tue 12:00 PST to Thu 12:00 PST. * IMPACTS...Intense rainfall and multiple feet of new snow will produce large and destructive avalanches. These avalanches may run long distances into flat terrain, valley floors, and mature forests. In addition, debris flows are possible out of Mount Shasta drainages such as Cascade Gulch, Ash Creek, and Mud Creek. * PRECAUTIONARY / PREPAREDNESS ACTIONS...Very dangerous avalanche conditions. Travel in, near, or below avalanche terrain is not recommended. Recreational users without backcountry avalanche skills are advised to stay out of the backcountry. Deep snow conditions exist. Consult http://shastaavalanche.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.