San Jose, 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 San Jose.

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

Winter Weather Advisory issued November 15 at 4:46AM PST until November 15 at 1:00PM PST by NWS Reno NV

* WHAT...Snow. Total snow accumulations up to 3 inches above 5500 feet, with a dusting possible below 5500 feet. * WHERE...Lassen-Eastern Plumas-Eastern Sierra Counties. * WHEN...Until 1 PM PST this afternoon. * IMPACTS...Plan on slippery road conditions. The hazardous conditions could impact the Friday morning commute.

Winter Weather Advisory issued November 15 at 4:46AM PST until November 15 at 7:00PM PST by NWS Reno NV

* WHAT...Snow. For the Tahoe area, snow accumulations 1 to 3 inches below 6500 feet and 6 to 10 inches above 6500 feet. For Mono County, snow accumulations of 2 to 5 inches. * WHERE...Greater Lake Tahoe Area, and Mono County. * WHEN...Until 7 PM PST this evening. * IMPACTS...Plan on slippery road conditions. The hazardous conditions could impact the Friday morning and evening commutes.

Winter Weather Advisory issued November 15 at 4:42AM PST until November 15 at 10:00PM PST by NWS Hanford CA

* WHAT...Snow expected. Total snow accumulations up to 6 inches and up to 13 inches at the higher elevations. * WHERE...A portion of central California. * WHEN...Until 10 PM PST this evening. * IMPACTS...Travel could be very difficult. The hazardous conditions could impact the Friday morning and evening commutes.

Wind Advisory issued November 15 at 3:48AM PST until November 15 at 7:00PM PST by NWS Las Vegas NV

* WHAT...West winds 25 to 35 mph with gusts up to 45 mph expected. * WHERE...Western Mojave Desert. * WHEN...Until 7 PM PST this evening. * IMPACTS...Gusty winds will blow around unsecured objects. Tree limbs could be blown down and a few power outages may result. Reduced visibility in blowing dust and sand.

Winter Weather Advisory issued November 15 at 3:47AM PST until November 15 at 10:00PM PST by NWS San Diego CA

* WHAT...Total snow accumulations 1 to 3 inches, locally near 4 inches from Running Springs to Big Bear Lake. * WHERE...San Bernardino County Mountains and Riverside County Mountains above 5,550 feet. * WHEN...Through 10 PM PST tonight. * IMPACTS...Plan on slippery road conditions. The hazardous conditions could impact the morning and evening commute. * ADDITIONAL DETAILS...Highest chances for accumulating snow will be through tonight, though additional flurries are possible through Saturday morning.

Wind Advisory issued November 15 at 3:23AM PST until November 15 at 8:00PM PST by NWS Los Angeles/Oxnard CA

* WHAT...West winds 15 to 30 mph with gusts up to 45 mph expected. * WHERE...Los Angeles and Ventura County beaches and coastal areas. * WHEN...From noon today to 8 PM PST this evening. * 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 15 at 3:23AM PST until November 15 at 8:00PM PST by NWS Los Angeles/Oxnard CA

* WHAT...West winds 20 to 35 mph with gusts up to 55 mph. * WHERE...Antelope Valley and Western Antelope Valley Foothills. * WHEN...Until 8 PM PST this evening. * IMPACTS...Gusty winds will blow around unsecured objects. Tree limbs could be blown down and a few power outages may result. Gusty cross winds will occur on area roadways, including Highways 14 and 138.

Wind Advisory issued November 15 at 3:23AM PST until November 16 at 3:00AM PST by NWS Los Angeles/Oxnard CA

* WHAT...Northwest to north winds 20 to 30 mph with gusts up to 50 mph expected. * WHERE...Interstate 5 Corridor. * WHEN...From noon today to 3 AM PST Saturday. * IMPACTS...Gusty winds will blow around unsecured objects. Tree limbs could be blown down and a few power outages may result. Gusty cross winds nay occur on area roadways, including Interstate 5.

Wind Advisory issued November 15 at 3:23AM PST until November 16 at 3:00AM PST by NWS Los Angeles/Oxnard CA

* WHAT...Northwest to north winds 15 to 30 mph with gusts up to 45 mph. * WHERE...Santa Barbara County Southwestern Coast and the Santa Ynez Mountain Range. * WHEN...Until 3 AM PST Saturday. * IMPACTS...Gusty winds will blow around unsecured objects. Tree limbs could be blown down and a few power outages may result. Gusty cross winds will occur on area roadways, including Highways 101 and 154.

Freeze Warning issued November 15 at 2:49AM PST until November 16 at 8:00AM PST by NWS Eureka CA

* WHAT...Sub-freezing temperatures 29 to 32 expected. * WHERE...Del Norte Interior, Northern Humboldt Interior, Southeastern Mendocino Interior, and Southern Lake. * WHEN...From 10 PM this evening to 8 AM PST Saturday. * IMPACTS...Frost and freeze conditions could kill crops, other sensitive vegetation and possibly damage unprotected outdoor plumbing.

Frost Advisory issued November 15 at 2:49AM PST until November 16 at 8:00AM PST by NWS Eureka CA

* WHAT...Temperatures as low as 32 will result in frost formation. * WHERE...Del Norte, Humboldt, and Mendocino Coast. * WHEN...From 10 PM this evening to 8 AM PST Saturday. * IMPACTS...Frost could harm sensitive outdoor vegetation. Sensitive outdoor plants may be killed if left uncovered.

Winter Weather Advisory issued November 15 at 2:43AM PST until November 15 at 10:00PM PST by NWS Sacramento CA

* WHAT...Snow expected above 5500 feet. Snowfall accumulations of 2 to 8 inches, with locally higher amounts up to 10 inches over the peaks through tonight. Winds gusting up to 30 mph. * WHERE...West Slope Northern Sierra Nevada and Western Plumas County/Lassen Park Counties above 5500 feet. * WHEN...Until 10 PM PST this evening. * IMPACTS...Plan on slick travel conditions, snow covered roads, chain controls, and travel delays. These hazardous conditions may impact commutes through this evening. Gusty winds could bring down tree branches. * ADDITIONAL DETAILS...Snow levels will be 4500 to 5500 feet through this evening. Heaviest period of snowfall expected this morning.

Coastal Flood Advisory issued November 15 at 2:28AM PST until November 15 at 12:00PM PST by NWS Eureka CA

* WHAT...High astronomical tides will cause minor flooding in low lying areas around Humboldt Bay. Up to 0.25 foot of saltwater inundation above ground level is possible near shorelines and tidal waterways. Between 8.8 and 9.0 feet MLLW at the North Spit tide gauge is predicted. * WHERE...Low lying areas around Humboldt Bay. * WHEN...From 8 AM to noon PST Friday. High tide is at 10:22 am at the Humboldt Bay North Spit tide gauge. Saltwater inundation will be possible 1 to 2 hours before and after high tide. * IMPACTS...Flooding of low lying areas around Humboldt Bay including parks and roads with only isolated closures expected. Flooding will likely impact Jackson Ranch Road in the Arcata Bottoms and several roads in King Salmon.

Beach Hazards Statement issued November 15 at 2:07AM PST until November 16 at 10:00AM PST by NWS San Diego CA

* WHAT...Surf of 4 to 6 feet with local sets to 7 feet for Orange County beaches and sets to 8 feet for San Diego County beaches. A high risk of rip currents for all beaches. High astronomical tides of 7 to 7.5 feet. * WHERE...San Diego County Coastal Areas and Orange County Coastal Areas. * WHEN...Through late Saturday morning. * IMPACTS...Increased risk of drowning due to elevated surf and strong rip currents. Minor flooding of low-lying beach areas and parking lots possible due to tidal overflow. * ADDITIONAL DETAILS...The combination of high tides and elevated surf will lead to a threat of minor coastal flooding Friday and Saturday mornings. Strong rip currents and high surf will lead to hazardous swimming conditions.

Frost Advisory issued November 15 at 1:39AM PST until November 16 at 8:00AM PST by NWS San Francisco CA

* WHAT...Temperatures as low as 33 will result in frost formation. * WHERE...Interior Monterey County and the Santa Lucia Range, and Northern Salinas Valley/Hollister Valley and Carmel Valley. * WHEN...From midnight Friday Night to 8 AM PST Saturday. * IMPACTS...Frost could harm sensitive outdoor vegetation. Sensitive outdoor plants may be killed if left uncovered. 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 15 at 1:39AM PST until November 16 at 8:00AM PST by NWS San Francisco CA

* WHAT...Sub-freezing temperatures as low as 28 expected. * WHERE...Most of San Benito County and the Cholame Hills in Southeast Monterey County, North Bay Interior Mountains, North Bay Interior Valleys, and Southern Salinas Valley/Arroyo Seco and Lake San Antonio. * WHEN...From midnight Friday Night to 8 AM PST Saturday. * IMPACTS...Frost and freeze conditions could kill crops, other sensitive vegetation, and possibly damage unprotected outdoor plumbing. Cold conditions will be hazardous to sensitive populations such as unhoused individuals.

Wind Advisory issued November 14 at 11:55PM PST until November 15 at 6:00AM PST by NWS Phoenix AZ

* WHAT...West winds 20 to 30 mph with gusts up to 45 mph. * WHERE...Imperial Valley. * WHEN...Until 6 AM PST Friday. * IMPACTS...Difficult driving conditions, especially for larger vehicles traveling along roads with crosswinds. Light, unsecured objects may become airborne.

Wind Advisory issued November 14 at 11:55PM PST until November 16 at 1:00AM PST by NWS Phoenix AZ

* WHAT...West winds 20 to 30 mph with gusts up to 50 mph. * WHERE...Southwest corner of Imperial County, and Western Imperial County. * WHEN...Until 1 AM PST Saturday. * IMPACTS...Difficult driving conditions, especially for larger vehicles traveling along roads with crosswinds. Light, unsecured objects may become airborne.

High Surf Advisory issued November 14 at 10:29PM PST until November 16 at 11:00AM PST by NWS San Francisco CA

* WHAT...Large breaking waves of 12 to 15 ft with up to 18 ft along steep NW facing beaches. * WHERE...Coastal North Bay Including Point Reyes National Seashore, San Francisco Peninsula Coast, Northern Monterey Bay and Southern Monterey Bay and Big Sur Coast. * WHEN...Until 11 AM PST Saturday. * 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.

High Surf Advisory issued November 14 at 10:29PM PST until November 16 at 11:00AM PST by NWS San Francisco CA

* WHAT...For the Coastal Flood Advisory, minor coastal flooding expected. For the High Surf Advisory, large breaking waves of 12 to 15 ft with up to 18 ft along steep NW facing beaches. * WHERE...San Francisco County. * WHEN...For the Coastal Flood Advisory, until 4 PM PST Monday. For the High Surf Advisory, until 11 AM PST Saturday. San Francisco highest tides are Friday 6.95 ft at 10:04 am, Saturday 7.01 ft at 10:43 am, Sunday 6.89 ft at 11:26 am and Monday 6.6 ft at 12:11 pm. * IMPACTS...For the coastal flood advisory, flooding of lots, parks, and roads with only isolated road closures expected. Dangerous swimming and surfing conditions and localized beach erosion. For the High Surf Advisory, 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.

Coastal Flood Advisory issued November 14 at 10:29PM PST until November 18 at 4:00PM PST by NWS San Francisco CA

* WHAT...For the Coastal Flood Advisory, minor coastal flooding expected. For the High Surf Advisory, large breaking waves of 12 to 15 ft with up to 18 ft along steep NW facing beaches. * WHERE...San Francisco County. * WHEN...For the Coastal Flood Advisory, until 4 PM PST Monday. For the High Surf Advisory, until 11 AM PST Saturday. San Francisco highest tides are Friday 6.95 ft at 10:04 am, Saturday 7.01 ft at 10:43 am, Sunday 6.89 ft at 11:26 am and Monday 6.6 ft at 12:11 pm. * IMPACTS...For the coastal flood advisory, flooding of lots, parks, and roads with only isolated road closures expected. Dangerous swimming and surfing conditions and localized beach erosion. For the High Surf Advisory, 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.

Coastal Flood Advisory issued November 14 at 10:29PM PST until November 18 at 4:00PM PST by NWS San Francisco CA

* WHAT...Minor coastal flooding expected. * WHERE...San Francisco Bay Shoreline Counties along the immediate San Francisco Bay. * WHEN...Until 4 PM PST Monday. San Francisco highest tides are Friday 6.95 ft at 10:04 am, Saturday 7.01 ft at 10:43 am, Sunday 6.89 ft at 11:26 am and Monday 6.6 ft at 12:11 pm. * IMPACTS...Flooding of lots, parks, and roads with only isolated road closures expected.

Wind Advisory issued November 14 at 9:50PM PST until November 16 at 4:00AM PST by NWS Hanford CA

* WHAT...Northwest winds 25 to 35 mph with gusts up to 50 mph expected. * WHERE...Mojave Desert Slopes. * WHEN...From 1 AM Friday 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. * ADDITIONAL DETAILS...Highways affected include, but are not limited to Highway 14, Highway 178, and Highway 58.

High Surf Advisory issued November 14 at 7:16PM PST until November 16 at 12:00PM PST by NWS Los Angeles/Oxnard CA

* WHAT...Large breaking waves will build to 6 to 8 feet with local sets to 10 feet tonight and Friday. High surf will continue into Saturday morning, then surf will slowly subside. There is a high risk of dangerous rip currents through Saturday. * WHERE...Ventura County Beaches. * WHEN...From 9 PM this evening to noon PST Saturday. * 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.

High Surf Advisory issued November 14 at 7:16PM PST until November 16 at 12:00PM PST by NWS Los Angeles/Oxnard CA

* WHAT...Large breaking waves will build to 8 to 19 feet with local sets to 15 feet tonight and Friday. High surf will continue into Saturday morning, then surf will slowly subside. There is a high risk of dangerous rip currents through Saturday. * WHERE...San Luis Obispo County Beaches and Santa Barbara County Central Coast Beaches. * WHEN...From 3 PM this afternoon to noon PST Saturday. * 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.