San Bernardino 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 San Bernardino.

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

Flood Watch issued November 19 at 5:30AM PST until November 22 at 4:00AM PST by NWS San Francisco CA

* WHAT...Flooding caused by excessive rainfall is possible. * WHERE...A portion of northern California, including the following areas, Coastal North Bay Including Point Reyes National Seashore, Marin Coastal Range, North Bay Interior Mountains, North Bay Interior Valleys and Sonoma Coastal Range. * WHEN...From late tonight through late Thursday 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... - Intense rainfall is expected in the North Bay with the first significant atmospheric river of the season. Rainfall totals from Wednesday and Thursday range from 3-7" in the valleys to 6-10" in the higher elevations. - http://www.weather.gov/safety/flood

High Wind Warning issued November 19 at 4:17AM PST until November 20 at 2:00AM PST by NWS Eureka CA

* WHAT...South winds 25 to 45 mph with gusts up to 65 mph expected along shore and up to 75 mph along high ridges. * WHERE...Del Norte County. * WHEN...From 4 PM this afternoon to 2 AM PST Wednesday. * IMPACTS...Damaging winds will blow down trees and power lines. Widespread power outages are expected. Travel will be difficult, especially for high profile vehicles.

High Wind Warning issued November 19 at 4:17AM PST until November 20 at 4:00AM PST by NWS Eureka CA

* WHAT...South winds 30 to 40 mph with gusts up to 70 mph expected. * WHERE...Humboldt Interior along exposed ridges. * WHEN...From 7 PM this evening to 4 AM PST Wednesday. * IMPACTS...Damaging winds will blow down trees and power lines. Widespread power outages are expected. Travel will be difficult, especially for high profile vehicles.

High Wind Warning issued November 19 at 4:17AM PST until November 20 at 4:00AM PST by NWS Eureka CA

* WHAT...Southeast winds 25 to 35 mph with gusts up to 60 mph expected along shore and in the Eel River Delta. * WHERE...Northern Humboldt Coast. * WHEN...From 7 PM this evening to 4 AM PST Wednesday. * IMPACTS...Damaging winds will blow down trees and power lines. Widespread power outages are expected. Travel will be difficult, especially for high profile vehicles. Wind gusts will be particularly strong along windward ridges, exposed coastal headlands, and along the Eel River Delta.

High Wind Warning issued November 19 at 4:17AM PST until November 20 at 6:00AM PST by NWS Eureka CA

* WHAT...South winds 35 to 45 mph with gusts up to 85 mph possible along the highest ridges of the King Range. * WHERE...Southwestern Humboldt. * WHEN...From 4 PM this afternoon to 6 AM PST Wednesday. * IMPACTS...Damaging winds will blow down trees and power lines. Widespread power outages are expected. Travel will be difficult, especially for high profile vehicles.

Wind Advisory issued November 19 at 4:17AM PST until November 20 at 8:00AM PST by NWS Eureka CA

* WHAT...South winds 25 to 35 mph with gusts up to 60 mph expected. * WHERE...Northern Mendocino Interior, Mendocino Coast, and Southeastern Mendocino Interior. * WHEN...From 7 PM this evening to 8 AM PST Wednesday. * 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.

Winter Storm Warning issued November 19 at 4:16AM PST until November 20 at 4:00AM PST by NWS Eureka CA

* WHAT...Heavy snow possible. Total snow accumulations of 5 to 8 inches possible. Winds could gust as high as 50 mph. * WHERE...Portions of southern Trinity to the east of Forest Glen and Hyampom and above around 3500 ft, including portions of highway 36. * WHEN...From 4 PM this afternoon to 4 AM PST Wednesday. * IMPACTS...Travel could be very difficult. Strong winds could cause extensive damage to trees and power lines.

Winter Storm Warning issued November 19 at 4:16AM PST until November 20 at 10:00PM PST by NWS Eureka CA

* WHAT...Heavy snow possible. Total snow accumulations between 5 and 12 inches possible above 2,000 feet, 1 to 3 feet possible above 3,000 feet. Winds could gust as high as 50 mph. Lowest snow levels expected during Wednesday morning. * WHERE...Northeastern Trinity. * WHEN...From 4 PM this afternoon to 10 PM PST Wednesday. * IMPACTS...Travel could be very difficult to impossible. Tire chains may be necessary if travelling through mountain passes. Gusty winds could bring down tree branches.

Flood Watch issued November 19 at 4:13AM PST until November 22 at 4:00AM PST by NWS Eureka CA

An atmospheric river is forecast to move over NWRN CA Tuesday night through the weekend. Steady moderate to heavy rain is expected the rest of this week, with most areas seeing 2 to 5 inches of rain every 24 hrs during this period, with higher amounts expected in the mountains on SW facing slopes. Initially, localized flooding is possible in urban areas and small creeks and streams may rise out of their banks. More extensive flooding, including flooding of main stem rivers, is possible later this week as rain continues. * 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...From late tonight through late Thursday night. * 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... - 2 to 5 inches of rain is expected to fall Tuesday night and Wednesday, with an additional 2 to 3 inches possible Thursday. Rain possibly continues Friday into the weekend. - http://www.weather.gov/safety/flood

Flood Watch issued November 19 at 4:13AM PST until November 22 at 4:00AM PST by NWS Eureka CA

An atmospheric river is forecast to move over NWRN CA Tuesday night through the weekend. Steady moderate to heavy rain is expected the rest of this week, with most areas seeing 2 to 5 inches of rain every 24 hrs during this period, with higher amounts expected in the mountains on SW facing slopes. Initially, localized flooding is possible in urban areas and small creeks and streams may rise out of their banks. More extensive flooding, including flooding of main stem rivers, is possible later this week as rain continues. * 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...From late tonight through late Thursday night. * 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... - 3 to 5 inches of rain is expected to fall Tuesday night and Wednesday, with an additional 2 to 4 inches possible Thursday. Rain possibly continues Friday into the weekend. - http://www.weather.gov/safety/flood

Flood Watch issued November 19 at 4:13AM PST until November 22 at 4:00AM PST by NWS Eureka CA

An atmospheric river is forecast to move over NWRN CA Tuesday night through the weekend. Steady moderate to heavy rain is expected the rest of this week, with most areas seeing 2 to 5 inches of rain every 24 hrs during this period, with higher amounts expected in the mountains on SW facing slopes. Initially, localized flooding is possible in urban areas and small creeks and streams may rise out of their banks. More extensive flooding, including flooding of main stem rivers, is possible later this week as rain continues. * 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...From late tonight through late Thursday night. * 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... - 2 to 6 inches of rain is expected to fall Tuesday night and Wednesday, with an additional 2 to 4 inches possible Thursday. Over 12 inches of rain possible in the King Range by Thursday, with additional rain expected Friday and Saturday. Rain possibly continues Friday into the weekend. - http://www.weather.gov/safety/flood

Flood Watch issued November 19 at 4:13AM PST until November 22 at 4:00AM PST by NWS Eureka CA

An atmospheric river is forecast to move over NWRN CA Tuesday night through the weekend. Steady moderate to heavy rain is expected the rest of this week, with most areas seeing 2 to 5 inches of rain every 24 hrs during this period, with higher amounts expected in the mountains on SW facing slopes. Initially, localized flooding is possible in urban areas and small creeks and streams may rise out of their banks. More extensive flooding, including flooding of main stem rivers, is possible later this week as rain continues. * 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...From late tonight through late Thursday night. * 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... - 3 to 5 inches of rain is expected to fall Tuesday night and Wednesday, with an additional 2 to 4 inches possible Thursday. Rain possibly continues Friday into the weekend. - http://www.weather.gov/safety/flood

Flood Watch issued November 19 at 4:13AM PST until November 22 at 4:00AM PST by NWS Eureka CA

An atmospheric river is forecast to move over NWRN CA Tuesday night through the weekend. Steady moderate to heavy rain is expected the rest of this week, with most areas seeing 2 to 5 inches of rain every 24 hrs during this period, with higher amounts expected in the mountains on SW facing slopes. Initially, localized flooding is possible in urban areas and small creeks and streams may rise out of their banks. More extensive flooding, including flooding of main stem rivers, is possible later this week as rain continues. * WHAT...Flooding caused by excessive rainfall continues to be possible. * WHERE...A portion of northwest California, including Southern Trinity, with highest amounts expected to the southwest of South Fork Mtn. * WHEN...From late tonight through late Thursday night. * 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. * ADDITIONAL DETAILS... - 3 to 6 inches of rain is expected to fall Tuesday night and Wednesday, with an additional 2 to 4 inches possible Thursday. Rain possibly continues Friday into the weekend. - http://www.weather.gov/safety/flood

Cold Weather Advisory issued November 19 at 3:42AM PST until November 19 at 10:00AM PST by NWS Sacramento CA

* WHAT...Very cold temperatures of 3 to 15 degrees expected this morning at elevations at or above 6000 feet. * WHERE...West Slope Northern Sierra Nevada and Western Plumas County/Lassen Park. * WHEN...Until 10 AM PST this morning. * IMPACTS...Frostbite and hypothermia will occur if unprotected skin is exposed to these temperatures. These cold temperatures will be hazardous to pets, plants, and those without adequate heating.

Freeze Warning issued November 19 at 3:42AM PST until November 19 at 10:00AM PST by NWS Sacramento CA

* WHAT...Low temperatures 30 to 36 degrees and widespread frost expected this morning at elevations below 2000 feet. * WHERE...Carquinez Strait and Delta, Motherlode, Mountains Southwestern Shasta County to Western Colusa County, Northern San Joaquin Valley, Shasta Lake Area / Northern Shasta County, and Southern Sacramento Valley. * WHEN...Until 10 AM PST this morning. * IMPACTS...These cold temperatures will be hazardous to pets, plants, and those without adequate heating. Frost and freeze conditions will impact sensitive vegetation.

Freeze Warning issued November 19 at 3:42AM PST until November 19 at 10:00AM PST by NWS Sacramento CA

* WHAT...For the Freeze Warning, low temperatures 30 to 36 degrees and widespread frost expected this morning at elevations below 2000 feet. For the Wind Advisory, southeast winds 15 to 25 mph with gusts of 35 to 45 mph expected. * WHERE...Northern/Central Sacramento Valley, and the Northeast Foothills. * WHEN...For the Freeze Warning, through 10 AM PST this morning. For the Wind Advisory, from 10 PM this evening to 4 PM PST Wednesday. * IMPACTS...These cold temperatures will be hazardous to pets, plants, and those without adequate heating. Frost and freeze conditions will impact sensitive vegetation. Gusty winds will blow around unsecured objects. Tree limbs could be blown down and a few power outages may result.

Wind Advisory issued November 19 at 3:42AM PST until November 20 at 4:00PM PST by NWS Sacramento CA

* WHAT...For the Freeze Warning, low temperatures 30 to 36 degrees and widespread frost expected this morning at elevations below 2000 feet. For the Wind Advisory, southeast winds 15 to 25 mph with gusts of 35 to 45 mph expected. * WHERE...Northern/Central Sacramento Valley, and the Northeast Foothills. * WHEN...For the Freeze Warning, through 10 AM PST this morning. For the Wind Advisory, from 10 PM this evening to 4 PM PST Wednesday. * IMPACTS...These cold temperatures will be hazardous to pets, plants, and those without adequate heating. Frost and freeze conditions will impact sensitive vegetation. Gusty winds will blow around unsecured objects. Tree limbs could be blown down and a few power outages may result.

Winter Storm Warning issued November 19 at 3:37AM PST until November 20 at 4:00PM PST by NWS Medford OR

...A STRONG LOW WILL BRING SIGNIFICANT WIND AND WINTER WEATHER IMPACTS TO SOUTHERN OREGON AND NORTHERN CALIFORNIA THROUGH WEDNESDAY... .A cold front will move through the region Tuesday evening, bringing heavy snow to locations mostly above 4000 feet. Once the front passes Wednesday night, heavy wet snow will continue to fall, especially over northern California near Mt. Shasta City. There is a low chance an extreme snow event occurs around Mt Shasta City with 2 to 3 feet falling in that area through Wednesday evening. * WHAT...Heavy snow expected southern Shasta Valley. Total snow accumulations between 6 to 18 inches. South winds 40 to 45 mph with gusts up to 55 mph expected. * WHERE...Southern Shasta Valley in Central Siskiyou County, including Interstate 5 and Highway 97 near Weed. * WHEN...From 2 PM this afternoon to 4 PM PST Wednesday. * IMPACTS...The strong winds and weight of snow on tree limbs may down power lines and could cause sporadic power outages. Whiteout conditions are expected and will make travel treacherous and potentially life-threatening. Travel could be very difficult to impossible. The hazardous conditions could impact the Tuesday evening and Wednesday morning commutes. Very strong winds could cause damage to trees and power lines.

Winter Storm Warning issued November 19 at 3:37AM PST until November 20 at 4:00PM PST by NWS Medford OR

...A STRONG LOW WILL BRING SIGNIFICANT WIND AND WINTER WEATHER IMPACTS TO SOUTHERN OREGON AND NORTHERN CALIFORNIA THROUGH WEDNESDAY... .A cold front will move through the region Tuesday evening, bringing heavy snow to locations mostly above 4000 feet. Once the front passes Wednesday night, heavy wet snow will continue to fall, especially over northern California near Mt. Shasta City. There is a low chance an extreme snow event occurs around Mt Shasta City with 2 to 3 feet falling in that area through Wednesday evening. * WHAT...Total snow accumulations between 6 and 18 inches with up to 2 feet over higher mountains. Winds gusting as high as 70 mph over higher exposed terrain. * WHERE...Portions of western Siskiyou County above 3500 feet through tonight, including Etna Summit and Scott Mountain Pass. * WHEN...From 4 PM this afternoon to 4 PM PST Wednesday. * IMPACTS...Whiteout conditions are possible and will make travel treacherous and potentially life-threatening. Travel could be very difficult to impossible. The hazardous conditions could impact Tuesday evening commutes. Very strong winds could cause extensive damage to trees and power lines. * ADDITIONAL DETAILS...Snow will continue to fall through tonight. Snow levels near 6000 feet late Sunday afternoon will fall rapidly during Sunday evening, then remain around 3000 feet through Monday evening.

Winter Weather Advisory issued November 19 at 3:37AM PST until November 20 at 4:00PM PST by NWS Medford OR

...A STRONG LOW WILL BRING SIGNIFICANT WIND AND WINTER WEATHER IMPACTS TO SOUTHERN OREGON AND NORTHERN CALIFORNIA THROUGH WEDNESDAY... .A cold front will move through the region Tuesday evening, bringing heavy snow to locations mostly above 4000 feet. Once the front passes Wednesday night, heavy wet snow will continue to fall, especially over northern California near Mt. Shasta City. There is a low chance an extreme snow event occurs around Mt Shasta City with 2 to 3 feet falling in that area through Wednesday evening. * WHAT...Snow expected. Total snow accumulations between 2 and 8 inches. Winds gusting as high as 60 mph over high exposed terrain. * WHERE...In California, Modoc County County. In Oregon, Klamath Basin County. * WHEN...From 4 PM this afternoon to 4 PM PST Wednesday. * IMPACTS...Travel could be very difficult. The hazardous conditions could impact the Tuesday evening and Wednesday morning commutes. Strong winds could cause extensive damage to trees and power lines.

Winter Storm Warning issued November 19 at 3:37AM PST until November 20 at 4:00PM PST by NWS Medford OR

...A STRONG LOW WILL BRING SIGNIFICANT WIND AND WINTER WEATHER IMPACTS TO SOUTHERN OREGON AND NORTHERN CALIFORNIA THROUGH WEDNESDAY... .A cold front will move through the region Tuesday evening, bringing heavy snow to locations mostly above 4000 feet. Once the front passes Wednesday night, heavy wet snow will continue to fall, especially over northern California near Mt. Shasta City. There is a low chance an extreme snow event occurs around Mt Shasta City with 2 to 3 feet falling in that area through Wednesday evening. * WHAT...Heavy snow expected. Total snow accumulations between 3 and 36 inches. Winds gusting as high as 70 mph over high exposed terrain. * WHERE...North Central and Southeast Siskiyou County and South Central Siskiyou County Counties. * WHEN...From 2 PM this afternoon to 4 PM PST Wednesday. * IMPACTS...The strong winds and weight of snow on tree limbs may down power lines and could cause sporadic power outages. Whiteout conditions are expected and will make travel treacherous and potentially life-threatening. Travel could be very difficult to impossible. The hazardous conditions could impact the Tuesday evening and Wednesday morning commutes. Very strong winds could cause extensive damage to trees and power lines.

High Wind Warning issued November 19 at 3:26AM PST until November 20 at 1:00PM PST by NWS Medford OR

* WHAT...South winds 40 to 45 mph with gusts up to 70 mph expected. * WHERE...The Shasta Valley in central Siskiyou COunty, including Weed, Grenada, Montague, and portions of Interstate 5 and Highway 97. * WHEN...From 1 PM this afternoon to 1 PM PST Wednesday. * IMPACTS...Damaging winds could blow down trees and power lines. Power outages are possible. Travel will be difficult, especially for high profile vehicles. Unsecured objects may be lost or damaged.

High Wind Warning issued November 19 at 3:26AM PST until November 20 at 7:00PM PST by NWS Medford OR

* WHAT...South winds 25 to 35 mph with gusts up to 60 mph expected. * 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...From 7 PM this evening to 7 PM PST Wednesday. * IMPACTS...Damaging winds will blow down trees and power lines. Widespread power outages are expected. Travel will be difficult, especially for high profile vehicles.

Freeze Warning issued November 19 at 3:12AM PST until November 19 at 9:00AM PST by NWS Los Angeles/Oxnard CA

* WHAT...Sub-freezing temperatures between the low 20s and the low 30s are expected. * WHERE...Central Ventura County Valleys, Eastern Antelope Valley Foothills, Lake Casitas, Ojai Valley, Santa Barbara County Central Coast Beaches, Santa Barbara County Inland Central Coast, Santa Ynez Valley, and Western Antelope Valley Foothills. * WHEN...Until 9 AM PST this morning. * IMPACTS...Frost and freeze conditions could kill crops, other sensitive vegetation and possibly damage unprotected outdoor plumbing.

Wind Advisory issued November 19 at 3:12AM PST until November 19 at 12:00PM PST by NWS Los Angeles/Oxnard CA

* WHAT...North to northeast winds 15 to 30 mph with gusts up to 45 mph. * WHERE...Malibu Coast. * WHEN...Until noon PST today. * IMPACTS...Gusty winds will blow around unsecured objects. Tree limbs could be blown down and a few power outages may result.

Wind Advisory issued November 19 at 3:12AM PST until November 19 at 12:00PM PST by NWS Los Angeles/Oxnard CA

* WHAT...North winds 20 to 30 mph with gusts up to 45 mph expected. Strongest Monday night in the Santa Clarita Valley and Eastern Santa Monica Mountains. * WHERE...Eastern San Fernando Valley, Eastern Santa Monica Mountains Recreational Area, Santa Clarita Valley, Santa Susana Mountains, and Western San Fernando Valley. * WHEN...Until noon PST today. * IMPACTS...Gusty winds will blow around unsecured objects. Tree limbs could be blown down and a few power outages may result.

Wind Advisory issued November 19 at 3:12AM PST until November 19 at 12:00PM PST by NWS Los Angeles/Oxnard CA

* WHAT...North to northeast winds 15 to 30 mph with gusts up to 45 mph expected. * WHERE...Calabasas and Agoura Hills, Southeastern Ventura County Valleys, and Western Santa Monica Mountains Recreational Area. * WHEN...Until noon PST today. * IMPACTS...Gusty winds will blow around unsecured objects. Tree limbs could be blown down and a few power outages may result.

Wind Advisory issued November 19 at 3:12AM PST until November 19 at 12:00PM PST by NWS Los Angeles/Oxnard CA

* WHAT...North to northeast winds 20 to 30 mph with gusts up to 45 mph expected. * WHERE...Western San Gabriel Mountains and Highway 14 Corridor. * WHEN...Until noon PST today. * 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 November 19 at 2:56AM PST until November 20 at 10:00PM PST by NWS Sacramento CA

* WHAT...Heavy snow. Total snow accumulations 10 to 20 inches above 4500 feet, with locally higher accumulations of around 2 to 3 feet over the highest peaks. Additional accumulations of 5 to 10 inches down to around 3500 feet, and down to 3000 feet in Shasta County. Winds gusting as high as 50 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...From 4 PM this afternoon to 10 PM PST Wednesday. * IMPACTS...Travel could be very difficult to impossible. Slick travel conditions expected, with snow covered roads and chain controls likely. The hazardous conditions may impact the Tuesday evening through Wednesday evening commutes. Gusty winds could bring down tree branches * ADDITIONAL DETAILS...Snow levels 3000 to 4000 feet through Wednesday morning, rising to 4000 to 5500 feet by Wednesday afternoon.

High Surf Advisory issued November 19 at 2:08AM PST until November 19 at 9:00AM PST by NWS Los Angeles/Oxnard CA

* WHAT...Large breaking waves of 7 to 11 feet across west and northwest facing beaches with dangerous rip currents. * WHERE...San Luis Obispo County Beaches and Santa Barbara County Central Coast Beaches. * WHEN...Until 9 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 Watch issued November 19 at 1:26AM PST until November 23 at 4:00AM PST by NWS Sacramento CA

* WHAT...Prolonged periods of moderate to heavy rain with amounts 3 to 6 inches expected and amounts up to 8 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 of Southwestern Shasta County to Western Colusa County, Northeast Foothills, Shasta Lake Area / Northern Shasta County. * WHEN...From 10 PM PST this evening through 4 AM PST Saturday morning. * IMPACTS...Excessive runoff may result in sharp rises of rivers, creeks, and streams, and ponding of water on roadways and other low-lying locations. * ADDITIONAL DETAILS... - http://www.weather.gov/safety/flood

Cold Weather Advisory issued November 19 at 12:53AM PST until November 19 at 10:00AM PST by NWS Hanford CA

* WHAT...Very cold temperatures as low as 2 degrees expected Above 6000 ft. * WHERE...Kings Canyon NP, Sequoia NP, Yosemite NP outside of the valley, and Yosemite Valley. * WHEN...Until 10 AM PST this morning. * IMPACTS...The cold wind chills as low as 5 below zero could result in hypothermia if precautions are not taken.

Freeze Warning issued November 19 at 12:53AM PST until November 19 at 10:00AM PST by NWS Hanford CA

* WHAT...Sub-freezing temperatures as low as 30 degrees expected. * WHERE...Buttonwillow - Lost Hills - I5, Caruthers - San Joaquin - Selma, Delano-Wasco-Shafter, Hanford - Corcoran - Lemoore, Merced - Madera - Mendota, Planada - Le Grand - Snelling, South End San Joaquin Valley, Southeast San Joaquin Valley, Visalia - Porterville - Reedley, and West Side of Fresno and Kings Counties. * WHEN...Until 10 AM PST this morning. * IMPACTS...Frost and freeze conditions could kill crops, other sensitive vegetation and possibly damage unprotected outdoor plumbing.

Frost Advisory issued November 19 at 12:16AM PST until November 19 at 8:00AM PST by NWS San Francisco CA

* WHAT...Temperatures as low as 32 will result in frost formation. * WHERE...The Santa Clara Valley and Eastern Hills. * WHEN...Until 8 AM PST this morning. * IMPACTS...Cold conditions will be hazardous to sensitive populations such as unhoused individuals. Cold Conditions can lead to hypothermia with prolonged exposure.

Freeze Warning issued November 19 at 12:16AM PST until November 19 at 8:00AM PST by NWS San Francisco CA

* WHAT...Sub-freezing temperatures as low as 26. * WHERE...Interior Central Coast. * WHEN...Until 8 AM PST this morning. * IMPACTS...Cold conditions will be hazardous to sensitive populations such as unhoused individuals. Cold Conditions can lead to hypothermia with prolonged exposure.

Frost Advisory issued November 19 at 12:16AM PST until November 19 at 8:00AM PST by NWS San Francisco CA

* WHAT...Temperatures as low as 34 will result in frost formation. * WHERE...Northern Monterey Bay. * WHEN...Until 8 AM PST this morning. * IMPACTS...Cold conditions will be hazardous to sensitive populations such as unhoused individuals. Cold Conditions can lead to hypothermia with prolonged exposure.

Frost Advisory issued November 19 at 12:16AM PST until November 19 at 8:00AM PST by NWS San Francisco CA

* WHAT...Temperatures as low as 33 will result in frost formation. * WHERE...The East Bay Hills and Valleys. * WHEN...Until 8 AM PST this morning. * IMPACTS...Cold conditions will be hazardous to sensitive populations such as unhoused individuals. Cold Conditions can lead to hypothermia with prolonged exposure.

Freeze Warning issued November 19 at 12:16AM PST until November 19 at 8:00AM PST by NWS San Francisco CA

* WHAT...For the Freeze Warning, sub-freezing temperatures as low as 31. For the Wind Advisory, south winds 20 to 30 mph with gusts up to 45 mph expected. * WHERE...North Bay Interior Mountains and North Bay Interior Valleys. * WHEN...For the Freeze Warning, until 8 AM PST this morning. For the Wind Advisory, from 10 PM this evening to 6 AM PST Thursday. * IMPACTS...Cold conditions will be hazardous to sensitive populations such as unhoused individuals. Cold Conditions can lead to hypothermia with prolonged exposure. 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 November 19 at 12:16AM PST until November 21 at 6:00AM PST by NWS San Francisco CA

* WHAT...South winds 20 to 30 mph with gusts up to 45 mph expected. * WHERE...San Francisco and San Francisco Bay Shoreline, The Marin Hills, Western Sonoma County Hills, and Coastal North Bay Including Point Reyes National Seashore. * WHEN...From 10 PM this evening to 6 AM PST Thursday. * 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 November 19 at 12:16AM PST until November 21 at 6:00AM PST by NWS San Francisco CA

* WHAT...For the Freeze Warning, sub-freezing temperatures as low as 31. For the Wind Advisory, south winds 20 to 30 mph with gusts up to 45 mph expected. * WHERE...North Bay Interior Mountains and North Bay Interior Valleys. * WHEN...For the Freeze Warning, until 8 AM PST this morning. For the Wind Advisory, from 10 PM this evening to 6 AM PST Thursday. * IMPACTS...Cold conditions will be hazardous to sensitive populations such as unhoused individuals. Cold Conditions can lead to hypothermia with prolonged exposure. 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.

Lake Wind Advisory issued November 18 at 11:09PM PST until November 20 at 7:00PM PST by NWS Reno NV

* WHAT...Southwest winds 15 to 25 mph with gusts up to 40 mph and waves 1 to 4 feet. * WHERE...Greater Lake Tahoe Area. * WHEN...From 10 PM Tuesday to 7 PM PST Wednesday. * IMPACTS...Small boats, kayaks and paddle boards will be prone to capsizing and should remain off lake waters until conditions improve.

Winter Weather Advisory issued November 18 at 11:09PM PST until November 20 at 10:00PM PST by NWS Reno NV

* WHAT...Snow above 5000 feet. Snow accumulations up to 2 to 5 inches with up to 6-8 inches west of Highway 395. Winds gusting as high as 45 mph. * WHERE...Lassen-Eastern Plumas-Eastern Sierra Counties. * WHEN...From 10 PM Tuesday to 10 PM PST Wednesday. * IMPACTS...Plan on slippery road conditions. The hazardous conditions could impact the Wednesday morning and evening commutes. Gusty winds could bring down tree branches. * ADDITIONAL DETAILS...Snow levels are projected to rise up to near 7000 to 7500 feet after 10pm on Wednesday, which will limit additional snow totals. Roads will remain slick and wet with additional rainfall.

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.