| Alert: | Flood Watch |
| Area(s): | Mendocino Coast; Northwestern Mendocino Interior |
| Effective: | 23apeor35ap -> 24apeor0ap |
| Onset: | 23apeor0ap -> 23apeor45ap |
| Severity: | Severe |
| Certainty: | Possible |
| Urgency: | Future |
| Issued By: | NWS Eureka CA on 23apeor35ap |
| Headline: | Flood Watch issued December 23 at 10:35AM PST until December 24 at 12:00PM PST by NWS Eureka CA |
| Description: |
* WHAT...Flooding caused by excessive rainfall is possible. * WHERE...A portion of northwest California, including the following areas, Mendocino Coast and Northwestern Mendocino Interior. The heaviest rain is expected north of Fort Bragg and Highway 20. * WHEN...From 9 PM PST this evening through Tuesday morning. * 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. Flooding may occur in poor drainage and urban areas. * ADDITIONAL DETAILS... - One to two inches of rain is expected to fall in a short period of time tonight. - http://www.weather.gov/safety/flood |
| Alert: | Flood Watch |
| Area(s): | Coastal Del Norte; Del Norte Interior; Northern Humboldt Coast; Southwestern Humboldt; Northern Humboldt Interior; Southern Humboldt Interior |
| Effective: | 23apeor35ap -> 24apeor0ap |
| Onset: | 23apeor0ap -> 23apeor45ap |
| Severity: | Severe |
| Certainty: | Possible |
| Urgency: | Future |
| Issued By: | NWS Eureka CA on 23apeor35ap |
| Headline: | Flood Watch issued December 23 at 10:35AM PST until December 24 at 12:00PM PST by NWS Eureka CA |
| Description: |
* WHAT...Flooding caused by excessive rainfall is possible. * WHERE...A portion of northwest California, including the following areas, Coastal Del Norte, Del Norte Interior, Northern Humboldt Coast, Northern Humboldt Interior, Southern Humboldt Interior and Southwestern Humboldt. * WHEN...From 7 PM PST this evening through Tuesday morning. * 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... - Two to four inches of rain is expected to fall tonight and has the potential to cause flooding of low-lying areas and small streams may overflow their banks. - http://www.weather.gov/safety/flood |
| Alert: | Coastal Flood Advisory |
| Area(s): | San Luis Obispo County Beaches; Santa Barbara County Central Coast Beaches |
| Effective: | 23apeor18ap -> 24aaeor0aa |
| Onset: | 23apeor18ap -> 23apeor30ap |
| Severity: | Minor |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS Los Angeles/Oxnard CA on 23apeor18ap |
| Headline: | Coastal Flood Advisory issued December 23 at 10:18AM PST until December 24 at 9:00AM PST by NWS Los Angeles/Oxnard CA |
| Description: |
* WHAT...Large breaking waves will build this morning, peak at 18 to 25 feet this afternoon into Tuesday morning, then will subside slowly during Tuesday. Very dangerous rip currents are expected. For the Coastal Flood Advisory, coastal flooding is expected. * WHERE...San Luis Obispo County Beaches and Santa Barbara County Central Coast Beaches. * WHEN...For the High Surf Warning, until noon PST Tuesday. For the Coastal Flood Advisory, until 9 AM PST Tuesday. * IMPACTS...Flooding of sea water is likely around the times of high tides, over vulnerable low-lying coastal areas such as parking lots, beaches, and walkways. Significant damage to roads or structures is NOT expected. Powerful waves and strong rip currents will pose an exceptional risk of ocean drowning and damage to coastal structures like piers and jetties. Large breaking waves can cause injury, wash people off beaches and rocks, and capsize small boats near shore. * ADDITIONAL DETAILS...High tides between 4.0 and 5.0 feet MLLW are expected each morning between 4 AM and 6 AM. The risk for shallow but impactful coastal flooding is highest during these times, with flooded beach roads and parking lots possible, especially for the Oceano Dunes area. It appears that the risk of coastal flooding will be greatest tonight through Tuesday morning. |
| Alert: | Coastal Flood Advisory |
| Area(s): | Ventura County Beaches |
| Effective: | 23apeor18ap -> 24aaeor0aa |
| Onset: | 23apeor18ap -> 23apeor30ap |
| Severity: | Minor |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS Los Angeles/Oxnard CA on 23apeor18ap |
| Headline: | Coastal Flood Advisory issued December 23 at 10:18AM PST until December 24 at 9:00AM PST by NWS Los Angeles/Oxnard CA |
| Description: |
* WHAT...Large breaking waves will build this morning, peak at 12 to 18 feet this afternoon into Tuesday morning, then will subside slowly during Tuesday. Very dangerous rip currents are expected. For the Coastal Flood Advisory, coastal flooding expected. * WHERE...Ventura County Beaches. * WHEN...For the High Surf Warning, until noon PST Tuesday. For the Coastal Flood Advisory, until 9 AM PST Tuesday. * IMPACTS...Flooding of sea water is likely around the times of high tides, over vulnerable low-lying coastal areas such as parking lots, beaches, and walkways. Significant damage to roads or structures is NOT expected. Powerful waves and strong rip currents will pose an exceptional risk of ocean drowning and damage to coastal structures like piers and jetties. Large breaking waves can cause injury, wash people off beaches and rocks, and capsize small boats near shore. * ADDITIONAL DETAILS...High tides between 4.0 and 5.0 feet MLLW are expected each morning between 3 AM and 5 AM. The risk for shallow but impactful coastal flooding is highest during these times, with flooded beach roads and parking lots possible. It appears that the risk of coastal flooding will be greatest tonight through Tuesday morning. |
| Alert: | Coastal Flood Advisory |
| Area(s): | Los Angeles County Beaches |
| Effective: | 23apeor18ap -> 24aaeor0aa |
| Onset: | 23apeor18ap -> 23apeor30ap |
| Severity: | Minor |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS Los Angeles/Oxnard CA on 23apeor18ap |
| Headline: | Coastal Flood Advisory issued December 23 at 10:18AM PST until December 24 at 9:00AM PST by NWS Los Angeles/Oxnard CA |
| Description: |
* WHAT...Large breaking waves of 8 to 12 feet are expected on WEST facing beaches through Tuesday morning, then surf of 6 to 10 feet is likely Tuesday afternoon through Wednesday evening. Very dangerous rip currents are expected. * WHERE...Los Angeles County Beaches. * WHEN...Until 9 PM PST Wednesday. * 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. * ADDITIONAL DETAILS...High tides between 4.0 and 5.0 feet MLLW are expected each morning between 3 AM and 5 AM. Minor and shallow coastal flooding over normally dry sandy beach areas is possible during these times. |
| Alert: | High Surf Warning |
| Area(s): | San Luis Obispo County Beaches; Santa Barbara County Central Coast Beaches |
| Effective: | 23apeor18ap -> 24apeor0ap |
| Onset: | 23apeor18ap -> 23apeor30ap |
| Severity: | Moderate |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS Los Angeles/Oxnard CA on 23apeor18ap |
| Headline: | High Surf Warning issued December 23 at 10:18AM PST until December 24 at 12:00PM PST by NWS Los Angeles/Oxnard CA |
| Description: |
* WHAT...Large breaking waves will build this morning, peak at 18 to 25 feet this afternoon into Tuesday morning, then will subside slowly during Tuesday. Very dangerous rip currents are expected. For the Coastal Flood Advisory, coastal flooding is expected. * WHERE...San Luis Obispo County Beaches and Santa Barbara County Central Coast Beaches. * WHEN...For the High Surf Warning, until noon PST Tuesday. For the Coastal Flood Advisory, until 9 AM PST Tuesday. * IMPACTS...Flooding of sea water is likely around the times of high tides, over vulnerable low-lying coastal areas such as parking lots, beaches, and walkways. Significant damage to roads or structures is NOT expected. Powerful waves and strong rip currents will pose an exceptional risk of ocean drowning and damage to coastal structures like piers and jetties. Large breaking waves can cause injury, wash people off beaches and rocks, and capsize small boats near shore. * ADDITIONAL DETAILS...High tides between 4.0 and 5.0 feet MLLW are expected each morning between 4 AM and 6 AM. The risk for shallow but impactful coastal flooding is highest during these times, with flooded beach roads and parking lots possible, especially for the Oceano Dunes area. It appears that the risk of coastal flooding will be greatest tonight through Tuesday morning. |
| Alert: | High Surf Warning |
| Area(s): | Ventura County Beaches |
| Effective: | 23apeor18ap -> 24apeor0ap |
| Onset: | 23apeor18ap -> 23apeor30ap |
| Severity: | Moderate |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS Los Angeles/Oxnard CA on 23apeor18ap |
| Headline: | High Surf Warning issued December 23 at 10:18AM PST until December 24 at 12:00PM PST by NWS Los Angeles/Oxnard CA |
| Description: |
* WHAT...Large breaking waves will build this morning, peak at 12 to 18 feet this afternoon into Tuesday morning, then will subside slowly during Tuesday. Very dangerous rip currents are expected. For the Coastal Flood Advisory, coastal flooding expected. * WHERE...Ventura County Beaches. * WHEN...For the High Surf Warning, until noon PST Tuesday. For the Coastal Flood Advisory, until 9 AM PST Tuesday. * IMPACTS...Flooding of sea water is likely around the times of high tides, over vulnerable low-lying coastal areas such as parking lots, beaches, and walkways. Significant damage to roads or structures is NOT expected. Powerful waves and strong rip currents will pose an exceptional risk of ocean drowning and damage to coastal structures like piers and jetties. Large breaking waves can cause injury, wash people off beaches and rocks, and capsize small boats near shore. * ADDITIONAL DETAILS...High tides between 4.0 and 5.0 feet MLLW are expected each morning between 3 AM and 5 AM. The risk for shallow but impactful coastal flooding is highest during these times, with flooded beach roads and parking lots possible. It appears that the risk of coastal flooding will be greatest tonight through Tuesday morning. |
| Alert: | High Surf Advisory |
| Area(s): | Catalina and Santa Barbara Islands; Santa Barbara County Southwestern Coast; Santa Barbara County Southeastern Coast; Malibu Coast |
| Effective: | 23apeor18ap -> 25apeor0ap |
| Onset: | 23apeor18ap -> 23apeor30ap |
| Severity: | Minor |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS Los Angeles/Oxnard CA on 23apeor18ap |
| Headline: | High Surf Advisory issued December 23 at 10:18AM PST until December 25 at 9:00PM PST by NWS Los Angeles/Oxnard CA |
| Description: |
* WHAT...Large breaking waves of 8 to 12 feet are expected on WEST facing beaches through Tuesday morning, then surf of 6 to 10 feet is likely Tuesday afternoon through Wednesday evening. Very dangerous rip currents are expected. * WHERE...Catalina and Santa Barbara Islands, Santa Barbara County Southwestern Coast, Santa Barbara County Southeastern Coast, Malibu Coast and Los Angeles County Beaches. * WHEN...Until 9 PM PST Wednesday. * 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. * ADDITIONAL DETAILS...High tides between 4.0 and 5.0 feet MLLW are expected each morning between 3 AM and 5 AM. Minor and shallow coastal flooding over normally dry sandy beach areas is possible during these times. |
| Alert: | High Surf Advisory |
| Area(s): | Los Angeles County Beaches |
| Effective: | 23apeor18ap -> 25apeor0ap |
| Onset: | 23apeor18ap -> 23apeor30ap |
| Severity: | Minor |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS Los Angeles/Oxnard CA on 23apeor18ap |
| Headline: | High Surf Advisory issued December 23 at 10:18AM PST until December 25 at 9:00PM PST by NWS Los Angeles/Oxnard CA |
| Description: |
* WHAT...Large breaking waves of 8 to 12 feet are expected on WEST facing beaches through Tuesday morning, then surf of 6 to 10 feet is likely Tuesday afternoon through Wednesday evening. Very dangerous rip currents are expected. * WHERE...Los Angeles County Beaches. * WHEN...Until 9 PM PST Wednesday. * 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. * ADDITIONAL DETAILS...High tides between 4.0 and 5.0 feet MLLW are expected each morning between 3 AM and 5 AM. Minor and shallow coastal flooding over normally dry sandy beach areas is possible during these times. |
| Alert: | High Surf Warning |
| Area(s): | Coastal Del Norte; Northern Humboldt Coast; Southwestern Humboldt; Mendocino Coast |
| Effective: | 23aaeor47aa -> 24aaeor0aa |
| Onset: | 23aaeor47aa -> 23apeor0ap |
| Severity: | Moderate |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS Eureka CA on 23aaeor47aa |
| Headline: | High Surf Warning issued December 23 at 9:47AM PST until December 23 at 10:00PM PST by NWS Eureka CA |
| Description: |
* WHAT...Dangerously large breaking waves 26 to 30 ft. * WHERE...Coastal areas of Del Norte, Humboldt, Mendocino Counties. * WHEN...Until 10 PM PST this evening. . * IMPACTS...Breaking waves can sweep people off jetties and docks, and into dangerous seas. Life-threatening surfing conditions and significant beach erosion can be expected. |
| Alert: | High Wind Warning |
| Area(s): | Central Siskiyou County |
| Effective: | 23aaeor47aa -> 24aaeor0aa |
| Onset: | 23apeor0ap -> 23apeor15ap |
| Severity: | Severe |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS Medford OR on 23aaeor47aa |
| Headline: | High Wind Warning issued December 23 at 9:47AM PST until December 24 at 1:00AM PST by NWS Medford OR |
| Description: |
* WHAT...South winds 30 to 40 mph with gusts up to 60 mph expected. * WHERE...The Shasta Valley, including I-5 and the cities of Weed, Gazelle, Grenada, and Montague. Strongest winds are expected from Grenada south to Weed, including I-5. * WHEN...From 1 PM this afternoon to 1 AM PST Tuesday. * IMPACTS...For the Wind Advisory, gusty winds could blow around loose objects. Tree limbs could be blown down and a few power outages may result. For the High Wind Warning, damaging winds could blow down trees and power lines. Widespread power outages are possible. Travel could be very difficult, especially for high profile vehicles. |
| Alert: | Wind Advisory |
| Area(s): | Modoc County; Northern and Eastern Klamath County and Western Lake County; Central and Eastern Lake County |
| Effective: | 23aaeor47aa -> 24aaeor0aa |
| Onset: | 23apeor0ap -> 23apeor15ap |
| Severity: | Moderate |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS Medford OR on 23aaeor47aa |
| Headline: | Wind Advisory issued December 23 at 9:47AM PST until December 24 at 4:00AM PST by NWS Medford OR |
| Description: |
* WHAT...South winds 25 to 35 mph with gusts up to 55 mph expected. * WHERE...This includes the Summer Lake area and the mountains across Lake County and eastern Klamath County, and Modoc County. * WHEN...From 7 PM this evening to 4 AM PST Tuesday. * IMPACTS...Gusty winds will blow around unsecured objects. Tree limbs could be blown down and a few power outages may result. |
| Alert: | High Wind Warning |
| Area(s): | Mojave Desert Slopes |
| Effective: | 23aaeor15aa -> 25apeor0ap |
| Onset: | 24apeor0ap -> 23apeor0ap |
| Severity: | Severe |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS Hanford CA on 23aaeor15aa |
| Headline: | High Wind Warning issued December 23 at 9:15AM PST until December 25 at 10:00AM PST by NWS Hanford CA |
| Description: |
* WHAT...West winds 25 to 35 mph with gusts up to 60 mph expected. * WHERE...Mojave Desert Slopes. * WHEN...From 1 PM Tuesday to 10 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. * ADDITIONAL DETAILS...State Highways 14, 59, and 178 and US Highway 395 may see impacts. |
| Alert: | Wind Advisory |
| Area(s): | Indian Wells Valley; Mojave Desert |
| Effective: | 23aaeor15aa -> 25apeor0ap |
| Onset: | 24apeor0ap -> 23apeor0ap |
| Severity: | Moderate |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS Hanford CA on 23aaeor15aa |
| Headline: | Wind Advisory issued December 23 at 9:15AM PST until December 25 at 10:00AM PST by NWS Hanford CA |
| Description: |
* WHAT...West winds 15 to 25 mph with gusts up to 50 mph expected. * WHERE...Indian Wells Valley and Mojave Desert. * WHEN...From 1 PM Tuesday to 10 AM PST Wednesday. * IMPACTS...Gusty winds will blow around unsecured objects. Tree limbs could be blown down and a few power outages may result. |
| Alert: | Winter Storm Warning |
| Area(s): | Yosemite NP outside of the valley; Upper San Joaquin River; Kaiser to Rodgers Ridge; Kings Canyon NP; Grant Grove Area; Sequoia NP |
| Effective: | 23aaeor14aa -> 24apeor0ap |
| Onset: | 24aaeor0aa -> 23apeor0ap |
| Severity: | Severe |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS Hanford CA on 23aaeor14aa |
| Headline: | Winter Storm Warning issued December 23 at 9:14AM PST until December 24 at 7:00PM PST by NWS Hanford CA |
| Description: |
* WHAT...Snow expected. Total snow accumulations of 6 to 10 inches above 6,000 feet. Isolated amounts up to 16 inches at elevations above 8,000 feet. Winds gusting as high as 50 mph. * WHERE...A portion of central California. * WHEN...From 7 AM to 7 PM PST Tuesday. * IMPACTS...Travel could be very difficult to impossible. The hazardous conditions could impact the Tuesday morning and evening commutes. |
| Alert: | High Surf Warning |
| Area(s): | San Francisco; Coastal North Bay Including Point Reyes National Seashore; San Francisco Peninsula Coast; Northern Monterey Bay; Southern Monterey Bay and Big Sur Coast |
| Effective: | 23aaeor0aa -> 24apeor0ap |
| Onset: | 23aaeor0aa -> 23apeor0ap |
| Severity: | Moderate |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS San Francisco CA on 23aaeor0aa |
| Headline: | High Surf Warning issued December 23 at 9:00AM PST until December 24 at 12:00PM PST by NWS San Francisco CA |
| Description: |
* WHAT...For the Coastal Flood Warning, coastal flooding in low lying areas. For the High Surf Warning, dangerously large breaking waves of 25 to 35 feet, with largest wave sets up to 50 feet at favored spots. * WHERE...San Francisco, Coastal North Bay Including Point Reyes National Seashore, San Francisco Peninsula Coast, Northern Monterey Bay and Southern Monterey Bay and Big Sur Coast Counties. * WHEN...Until noon PST Tuesday. * IMPACTS...Life-threatening swimming and surfing conditions and significant shoreline erosion can be expected. Numerous roads may be closed, and sand berms over-topped. 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. |
| Alert: | Coastal Flood Warning |
| Area(s): | San Francisco; Coastal North Bay Including Point Reyes National Seashore; San Francisco Peninsula Coast; Northern Monterey Bay; Southern Monterey Bay and Big Sur Coast |
| Effective: | 23aaeor0aa -> 24apeor0ap |
| Onset: | 23aaeor0aa -> 23apeor0ap |
| Severity: | Severe |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS San Francisco CA on 23aaeor0aa |
| Headline: | Coastal Flood Warning issued December 23 at 9:00AM PST until December 24 at 12:00PM PST by NWS San Francisco CA |
| Description: |
* WHAT...For the Coastal Flood Warning, coastal flooding in low lying areas. For the High Surf Warning, dangerously large breaking waves of 25 to 35 feet, with largest wave sets up to 50 feet at favored spots. * WHERE...San Francisco, Coastal North Bay Including Point Reyes National Seashore, San Francisco Peninsula Coast, Northern Monterey Bay and Southern Monterey Bay and Big Sur Coast Counties. * WHEN...Until noon PST Tuesday. * IMPACTS...Life-threatening swimming and surfing conditions and significant shoreline erosion can be expected. Numerous roads may be closed, and sand berms over-topped. 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. |
| Alert: | Wind Advisory |
| Area(s): | San Bernardino County Mountains; Riverside County Mountains; San Diego County Mountains; Apple and Lucerne Valleys; Coachella Valley; San Diego County Deserts; San Gorgonio Pass Near Banning |
| Effective: | 23aaeor53aa -> 25aaeor0aa |
| Onset: | 24apeor0ap -> 23apeor15ap |
| Severity: | Moderate |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS San Diego CA on 23aaeor53aa |
| Headline: | Wind Advisory issued December 23 at 8:53AM PST until December 25 at 12:00AM PST by NWS San Diego CA |
| Description: |
* WHAT...West winds 25 to 35 mph with gusts up to 60 mph expected. * WHERE...Apple and Lucerne Valleys, Coachella Valley, Riverside County Mountains, San Bernardino County Mountains, San Diego County Deserts, San Diego County Mountains, and San Gorgonio Pass Near Banning. * WHEN...From 4 PM Tuesday to midnight PST Tuesday Night. * IMPACTS...Gusty winds will blow around unsecured objects. Tree limbs could be blown down and a few power outages may result. |
| Alert: | Wind Advisory |
| Area(s): | Coastal Del Norte; Del Norte Interior; Southwestern Humboldt; Northern Humboldt Interior; Southern Humboldt Interior |
| Effective: | 23aaeor57aa -> 24aaeor0aa |
| Onset: | 23apeor0ap -> 23apeor0ap |
| Severity: | Moderate |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS Eureka CA on 23aaeor57aa |
| Headline: | Wind Advisory issued December 23 at 6:57AM PST until December 23 at 10:00PM PST by NWS Eureka CA |
| Description: |
* WHAT...South winds 20 to 35 mph with gusts up to 55 mph expected. Locally higher gusts up to 60 -70 mph over higher terrain. * WHERE...Del Norte County, Humboldt Interior, and Southwestern Humboldt. * WHEN...From 1 PM this afternoon to 10 PM PST this evening. * 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. |
| Alert: | Winter Weather Advisory |
| Area(s): | Western Plumas County/Lassen Park; West Slope Northern Sierra Nevada |
| Effective: | 23aaeor24aa -> 24apeor0ap |
| Onset: | 24aaeor0aa -> 23apeor0ap |
| Severity: | Moderate |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS Sacramento CA on 23aaeor24aa |
| Headline: | Winter Weather Advisory issued December 23 at 2:24AM PST until December 24 at 7:00PM PST by NWS Sacramento CA |
| Description: |
* WHAT...Snow expected. Total snow accumulations of 5 to 10 inches above 6000 feet, locally higher amounts over peaks. Winds gusting as high as 45 mph. * WHERE...West Slope Northern Sierra Nevada and Western Plumas County/Lassen Park. * WHEN...From 7 AM to 7 PM PST Tuesday. * IMPACTS...Plan on slippery road conditions. The hazardous conditions could impact the Tuesday morning and evening commutes. Gusty winds could bring down tree branches. * ADDITIONAL DETAILS...Snow levels around 5500 to 6500 feet Tuesday morning, then expected to fall to near 5000 feet by Tuesday afternoon. |
| Alert: | High Surf Advisory |
| Area(s): | San Diego County Coastal Areas; Orange County Coastal |
| Effective: | 23aaeor46aa -> 25aaeor0aa |
| Onset: | 23aaeor46aa -> 23apeor15ap |
| Severity: | Minor |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS San Diego CA on 23aaeor46aa |
| Headline: | High Surf Advisory issued December 23 at 12:46AM PST until December 25 at 4:00AM PST by NWS San Diego CA |
| Description: |
* WHAT...Large breaking waves of 6 to 10 feet in San Diego County, with local sets to 13 feet. Waves of 5 to 8 feet in Orange County, with local sets to 12 feet on west-facing beaches. * WHERE...San Diego County Coastal Areas and Orange County Coastal Areas. * WHEN...Until 4 AM PST Wednesday. * IMPACTS...Dangerous swimming and surfing conditions. Localized beach erosion and overflow. * ADDITIONAL DETAILS...Despite relatively low astronomical tides, high surf may produce minor flooding of low-lying areas along the beach, such as beach parking lots. |
| Alert: | Wind Advisory |
| Area(s): | Owens Valley; Death Valley National Park; Esmeralda and Central Nye County; Western Clark and Southern Nye County |
| Effective: | 23aaeor39aa -> 25aaeor0aa |
| Onset: | 24apeor0ap -> 23apeor0ap |
| Severity: | Moderate |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS Las Vegas NV on 23aaeor39aa |
| Headline: | Wind Advisory issued December 23 at 12:39AM PST until December 24 at 10:00PM PST by NWS Las Vegas NV |
| Description: |
* WHAT...Southwest winds 15 to 25 mph with gusts of 45 to 50 mph expected...shifting to the northwest in the evening. * WHERE...In California, Death Valley National Park and Owens Valley. In Nevada, Esmeralda and Central Nye County and Western Clark and Southern Nye County. * WHEN...From 10 AM to 10 PM PST Tuesday. * IMPACTS...Gusty winds will blow around unsecured objects. Tree limbs could be blown down and a few power outages may result. Patchy blowing dust possible. * ADDITIONAL DETAILS...Strong crosswinds will impact travelers on US95 between Tonopah and Las Vegas. Strong winds will also impact travel on US-395 in the Owens Valley. |
| Alert: | Wind Advisory |
| Area(s): | Western Mojave Desert; Morongo Basin |
| Effective: | 23aaeor39aa -> 25aaeor0aa |
| Onset: | 24apeor0ap -> 23apeor0ap |
| Severity: | Moderate |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS Las Vegas NV on 23aaeor39aa |
| Headline: | Wind Advisory issued December 23 at 12:39AM PST until December 25 at 2:00AM PST by NWS Las Vegas NV |
| Description: |
* WHAT...West winds 20 to 30 mph with gusts of 45 to 55 mph expected. * WHERE...Morongo Basin and Western Mojave Desert. * WHEN...From 4 PM Tuesday to 2 AM PST Wednesday. * IMPACTS...Gusty winds will blow around unsecured objects. Tree limbs could be blown down and a few power outages may result. Pockets of blowing dust are likely. |
| Alert: | Winter Weather Advisory |
| Area(s): | Lassen-Eastern Plumas-Eastern Sierra Counties |
| Effective: | 22apeor50ap -> 24apeor0ap |
| Onset: | 24aaeor0aa -> 23apeor15ap |
| Severity: | Moderate |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS Reno NV on 22apeor50ap |
| Headline: | Winter Weather Advisory issued December 22 at 12:50PM PST until December 24 at 7:00PM PST by NWS Reno NV |
| Description: |
* WHAT...Snow above 6000 feet with accumulations of 1 to 5 inches. Snow accumulations up to 8 inches along the highest peaks. Ridge winds gusting as high as 40 mph. * WHERE...Lassen-Eastern Plumas-Eastern Sierra Counties. * WHEN...From 7 AM to 7 PM PST Tuesday. * IMPACTS...Plan on slippery road conditions. The hazardous conditions could impact holiday travel as well as the Tuesday morning and evening commutes. |
| Alert: | Winter Weather Advisory |
| Area(s): | Mono |
| Effective: | 22apeor50ap -> 24apeor0ap |
| Onset: | 24aaeor0aa -> 23apeor15ap |
| Severity: | Moderate |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS Reno NV on 22apeor50ap |
| Headline: | Winter Weather Advisory issued December 22 at 12:50PM PST until December 24 at 7:00PM PST by NWS Reno NV |
| Description: |
* WHAT...Snow above 7000 feet with accumulations of 2 to 6 inches. Snow accumulations up to 12 inches along the highest peaks. Ridge winds gusting as high as 80 mph. * WHERE...Mono County. * WHEN...From 7 AM to 7 PM PST Tuesday. * IMPACTS...Travel could be very difficult. The hazardous conditions could impact holiday travel as well as the Tuesday morning and evening commutes. Strong winds could cause damage to trees and power lines. |
| Alert: | Winter Weather Advisory |
| Area(s): | Greater Lake Tahoe Area; Greater Lake Tahoe Area |
| Effective: | 22apeor50ap -> 24apeor0ap |
| Onset: | 24aaeor0aa -> 23apeor15ap |
| Severity: | Moderate |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS Reno NV on 22apeor50ap |
| Headline: | Winter Weather Advisory issued December 22 at 12:50PM PST until December 24 at 7:00PM PST by NWS Reno NV |
| Description: |
* WHAT...Snow above 6500 feet with accumulations of 2 to 6 inches west of Highway 89 with up to 12 inches along the highest peaks. Up to 2 inches at lake level. Ridge winds gusting as high as 90 mph. Southwest winds 10 to 20 mph with gusts up to 40 mph with wave heights between 1 to 3 feet on Lake Tahoe. * WHERE...Greater Lake Tahoe Area. * WHEN...From 7 AM to 7 PM PST Tuesday. * IMPACTS...Plan on slippery road conditions. The hazardous conditions could impact holiday travel as well as the Tuesday morning and evening commutes. Strong winds could cause damage to trees and power lines. |
| Alert: | Air Quality Alert |
| Area(s): | San Bernardino and Riverside County Valleys-The Inland Empire; Riverside County Mountains; San Gorgonio Pass Near Banning; Orange County Coastal; Orange County Inland |
| Effective: | 22apeor13ap |
| Onset: | 22apeor13ap -> 24aaeor0aa |
| Severity: | Unknown |
| Certainty: | Unknown |
| Urgency: | Unknown |
| Issued By: | NWS San Diego CA on 22apeor13ap |
| Headline: | Air Quality Alert issued December 22 at 12:13PM PST by NWS San Diego CA |
| Description: |
* WHAT...The South Coast AQMD has extended a mandatory wood-burning ban for residents in the South Coast Air Basin. The No-Burn rule bans burning wood, pellets, and manufactured fire logs in any indoor or outdoor wood-burning device. * WHERE...The South Coast Air Basin, which includes Orange County and non-desert portions of Los Angeles, Riverside, and San Bernardino counties. No-Burn Day alerts do not apply to areas above 3,000 feet in elevation, the Coachella Valley, or the High Desert. Homes that rely on wood as a sole source of heat, low-income households and those without natural gas service also are exempt from the requirement. * WHEN...Sunday and Monday. * IMPACTS...Particles in smoke can get deep into the lungs and cause health problems (including asthma attacks), increases in emergency room visits, and hospitalizations. No-Burn Days are needed to protect public health when fine particle pollution levels are expected to be high anywhere in the South Coast Air Basin. No-Burn Days are based on fine particle pollution levels that are forecasted for an entire 24-hour period, which may not be reflected in real- time air quality maps. |
| Alert: | Air Quality Alert |
| Area(s): | Catalina and Santa Barbara Islands; Santa Clarita Valley; Malibu Coast; Los Angeles County Beaches; Palos Verdes Hills; Los Angeles County Inland Coast including Downtown Los Angeles; Western Santa Monica Mountains Recreational Area; Eastern Santa Monica Mountains Recreational Area; Calabasas and Agoura Hills; Western San Fernando Valley; Eastern San Fernando Valley; Santa Susana Mountains; Los Angeles County San Gabriel Valley |
| Effective: | 22apeor10ap |
| Onset: | 22apeor10ap -> 24aaeor0aa |
| Severity: | Unknown |
| Certainty: | Unknown |
| Urgency: | Unknown |
| Issued By: | NWS Los Angeles/Oxnard CA on 22apeor10ap |
| Headline: | Air Quality Alert issued December 22 at 12:10PM PST by NWS Los Angeles/Oxnard CA |
| Description: |
* WHAT...The South Coast AQMD has extended a mandatory wood-burning ban for residents in the South Coast Air Basin. The No-Burn rule bans burning wood, pellets, and manufactured fire logs in any indoor or outdoor wood-burning device. * WHERE...The South Coast Air Basin, which includes Orange County and non-desert portions of Los Angeles, Riverside, and San Bernardino counties. No-Burn Day alerts do not apply to areas above 3,000 feet in elevation, the Coachella Valley, or the High Desert. Homes that rely on wood as a sole source of heat, low-income households and those without natural gas service also are exempt from the requirement. * WHEN...Sunday and Monday. * IMPACTS...Particles in smoke can get deep into the lungs and cause health problems (including asthma attacks), increases in emergency room visits, and hospitalizations. No-Burn Days are needed to protect public health when fine particle pollution levels are expected to be high anywhere in the South Coast Air Basin. No-Burn Days are based on fine particle pollution levels that are forecasted for an entire 24-hour period, which may not be reflected in real-time air quality maps. |
