A preliminary magnitude 5.6 earthquake struck near Redwood Valley in Mendocino County at approximately 8:10 a.m. Pacific Time on Wednesday, June 24, 2026, triggering earthquake alerts across parts of Northern California, including the San Francisco Bay Area.
The Redwood Valley earthquake on June 24, 2026, was centered north of Ukiah at a depth of approximately 5 miles, according to preliminary information from the U.S. Geological Survey. A phone alert received in the Bay Area indicated that the earthquake was approximately 117 miles from San Francisco.
Residents across Northern California reported feeling the shaking, although its strength varied by location. One person in Lake County described the earthquake as unusually long and estimated that the movement continued for approximately seven seconds.
No immediate reports of major injuries or damage
Authorities initially reported no major injuries or significant damage following the earthquake. However, officials cautioned that preliminary measurements and impact assessments could change as emergency agencies received additional information from communities near the epicenter.
The National Tsunami Warning Center said the earthquake did not pose a tsunami danger. The announcement provided reassurance to Northern California coastal communities that closely monitor tsunami information following stronger regional earthquakes.
California officials begin damage assessments
The California Governor’s Office of Emergency Services said it was coordinating with local authorities to evaluate possible effects from the earthquake.
Gov. Gavin Newsom was briefed on the situation, according to his office. State and local officials continued inspecting areas near Redwood Valley for structural damage, utility disruptions and other potential hazards.
A preliminary magnitude 2.5 aftershock was recorded near Redwood Valley several minutes after the main earthquake.
Residents were advised to remain prepared for additional aftershocks and follow instructions issued by local emergency officials. The preliminary magnitude 5.6 measurement could be revised as seismic experts continued reviewing the earthquake.
