LAKE COUNTY, Calif. — Next week, the Lake County Sheriff’s Office will conduct a full-length test of the county’s warning sirens.

The test will take place at 11 a.m. Monday, Feb. 3.

The three-minute test will involve the warning sirens in Middletown, Anderson Springs, Cobb, Loch Lomond, Kelseyville Riviera (formerly known as the Clear Lake Riviera) and Riviera West.

The sheriff’s office said the test is part of ongoing preparedness efforts for emergencies such as wildfires, earthquakes or other hazards.

Monthly siren tests occur on the first Monday of each month at 11 a.m.

Tests from March through January will last 30 seconds, while the February test is the full three-minute activation. Notifications about these tests will be sent via LakeCoAlerts and Nixle just before each test.

What to do when you hear sirens outside of scheduled tests

If you hear sirens outside of a scheduled test, it’s important to stay alert and seek more information.

The sirens may not always be heard depending on factors like terrain, background noise, being indoors, or your distance from the sirens.

Always remain vigilant and follow any instructions provided.

The Middletown, Anderson Springs, Cobb, and Loch Lomond sirens have been in place since 2018 and are maintained by the South Lake County Fire District. Should there be any issues, please contact South Lake County Fire District at 707-987-3089.

In 2021, the Kelseyville Riviera Homeowners Association installed three warning sirens. Should there be any issues, please contact the Kelseyville Riviera Homeowners Association at This email address is being protected from spambots. You need JavaScript enabled to view it..

The Riviera West warning sirens were installed in 2023. Should there be any issues, please contact the Riviera West Homeowner Association’s President at This email address is being protected from spambots. You need JavaScript enabled to view it..

The Lake County Sheriff’s Office urges all residents to take steps to prepare for all hazards which includes opting in for LakeCoAlerts and learning your zone. For details visit https://Ready.LakeCountyCA.gov.

Stay informed by following the Office of Emergency Services and the Lake County Sheriff on Facebook at http://www.facebook.com/lakecountyOES and www.facebook.com/lakesheriff.