Livermore, 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 Livermore.

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

Dense Smoke Advisory issued September 10 at 12:38AM PDT until September 10 at 11:00AM PDT by NWS Reno NV

* WHAT...Dense smoke reducing visibility to 1 mile or less at times. Smoke will also lead to degraded air quality. * WHERE...Mono County. * WHEN...Until 11 AM PDT this morning. * IMPACTS...Hazardous travel due to reduced visibility, especially along US-395. Poor air quality may cause health issues for those with respiratory illnesses. * ADDITIONAL DETAILS...For more details about the air quality near you, please visit fire.airnow.gov.

Wind Advisory issued September 10 at 12:12AM PDT until September 10 at 6:00AM PDT by NWS Phoenix AZ

* WHAT...For the first Wind Advisory, southwest winds 20 to 30 mph with gusts up to 45 mph. For the second Wind Advisory, west winds 20 to 30 mph with gusts up to 45 mph expected. * WHERE...Southwest corner of Imperial County. * WHEN...For the first Wind Advisory, until 6 AM PDT early this morning. For the second Wind Advisory, from 6 PM this evening to 2 AM PDT Thursday. * IMPACTS...Difficult driving conditions, especially for larger vehicles traveling along roads with crosswinds. Light, unsecured objects may become airborne.

Wind Advisory issued September 10 at 12:12AM PDT until September 11 at 2:00AM PDT by NWS Phoenix AZ

* WHAT...For the first Wind Advisory, southwest winds 20 to 30 mph with gusts up to 45 mph. For the second Wind Advisory, west winds 20 to 30 mph with gusts up to 45 mph expected. * WHERE...Southwest corner of Imperial County. * WHEN...For the first Wind Advisory, until 6 AM PDT early this morning. For the second Wind Advisory, from 6 PM this evening to 2 AM PDT Thursday. * IMPACTS...Difficult driving conditions, especially for larger vehicles traveling along roads with crosswinds. Light, unsecured objects may become airborne.

Dense Smoke Advisory issued September 9 at 11:18PM PDT until September 10 at 11:00AM PDT by NWS Hanford CA

* WHAT...Visibility one quarter to one half mile in dense smoke. * WHERE...Fresno-Tulare Lower Sierra, Grant Grove Area, Kaiser to Rodgers Ridge, Kings Canyon NP, San Joaquin River Canyon, and Upper San Joaquin River. * WHEN...Until 11 AM PDT Wednesday. * IMPACTS...Low visibility could make driving conditions hazardous. * ADDITIONAL DETAILS...For details on health impacts and recommended precautions, please consult the San Joaquin Valley Air Pollution Control District valleyair.org

Wind Advisory issued September 9 at 8:55AM PDT until September 10 at 5:00AM PDT by NWS Los Angeles/Oxnard CA

* WHAT...Northwest winds 20 to 30 mph with gusts to 50 mph expected. * WHERE...Santa Barbara County Southwestern Coast and Santa Ynez Mountains Western Range. * WHEN...From 5 PM this afternoon to 5 AM PDT Wednesday. * IMPACTS...Gusty winds will blow around unsecured objects. Tree limbs could be blown down and a few power outages may result.

Air Quality Alert issued September 4 at 8:01AM PDT by NWS Hanford CA

The Valley Air District is issuing an Air Quality Alert on September 3, 2025, due to smoke impacts from wildfires in California including the Garnet Fire, the Marmon Fire, the Salt 11-2 Fire, and the TCU September Lightning Complex for San Joaquin, Stanislaus, Merced, Madera, Fresno, Kings, Tulare, and the Valley portion of Kern Counties. This Air Quality Alert is in effect until the fires are extinguished. Exposure to particle pollution can cause serious health problems, aggravate lung disease, cause asthma attacks and acute bronchitis, and increase risk of respiratory infections. Residents are advised to use caution as conditions warrant. People with heart or lung diseases should follow their doctors advice for dealing with episodes of unhealthy air quality. Additionally, older adults and children should avoid prolonged exposure, strenuous activities or heavy exertion, as conditions dictate. For additional information, call your local San Joaquin Valley Air District office. Modesto 209-557-6400, Fresno 559-230-6000, Bakersfield 661-392-5500 Residents can also follow air quality conditions by downloading the free Valley Air app, available in the Apple store or Google Play, or by visiting the AirNow Fire and Smoke Map at fire.airnow.gov.

Air Quality Alert issued September 3 at 4:06PM PDT by NWS Hanford CA

The Valley Air District is issuing an Air Quality Alert on September 3, 2025, due to smoke impacts from wildfires in California including the Garnet Fire, the Marmon Fire, the Salt 11-2 Fire, and the TCU September Lightning Complex for San Joaquin, Stanislaus, Merced, Madera, Fresno, Kings, Tulare, and the Valley portion of Kern Counties. This Air Quality Alert is in effect until the fires are extinguished. Exposure to particle pollution can cause serious health problems, aggravate lung disease, cause asthma attacks and acute bronchitis, and increase risk of respiratory infections. Residents are advised to use caution as conditions warrant. People with heart or lung diseases should follow their doctors advice for dealing with episodes of unhealthy air quality. Additionally, older adults and children should avoid prolonged exposure, strenuous activities or heavy exertion, as conditions dictate. For additional information, call your local San Joaquin Valley Air District office. Modesto 209-557-6400, Fresno 559-230-6000, Bakersfield 661-392-5500 Residents can also follow air quality conditions by downloading the free Valley Air app, available in the Apple store or Google Play.