Earthquake rattles northern California, magnitude measured at 5.6

A magnitude 5.6 earthquake rattled northern California the morning of Wednesday, June 24, triggering alerts across the Bay Area, according to the United States Geological Survey.

The quake was recorded just over 6 miles from Redwood Valley at 8:10 a.m. PT and felt by people across the region, the USGS said.

It was not immediately clear if anyone was injured or whether damage had been reported. Data provided by USGS showed the earthquake was 8.1 miles deep.

Redwood Valley is in Mendocino County, about 125 miles north of San Francisco.

Gov. Gavin Newsom's office confirmed in a post on social media that he's been briefed on the earthquake.

"The Governor’s Office is closely coordinating with emergency officials and assessing potential impacts and damage," his office said.

Not long after, a smaller 2.5 magnitude earthquake struck again in Redwood Valley. As of 9 a.m. PT, officials said a tsunami was not anticipated.

Earthquake magnitudes

Here are the effects of earthquakes of various magnitudes, according to Michigan Technological University:

• Below 2.5: Generally not felt
• 2.5 to 5.4: Minor or no damage
• 5.5 to 6.0: Slight damage to buildings
• 6.1 to 6.9: Serious damage
• 7.0 to 7.9: Major earthquake, serious damage
• 8.0 or greater: Massive damage, can destroy communities

This is a developing story.

Natalie Neysa Alund is a senior reporter for USA TODAY. Reach her at [email protected] and follow her on X @nataliealund.