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Boulder Creek Today
By the People, for the People
Magnitude 4.6 Quake Shakes California's Santa Cruz Mountains
Tremors felt across the region, no immediate reports of damage
Apr. 20, 2026 at 11:40am
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A powerful earthquake serves as a reminder of the sublime forces that shape California's rugged landscape.Boulder Creek TodayA magnitude 4.6 earthquake struck the Santa Cruz Mountains near the town of Boulder Creek, California early Thursday morning, according to the U.S. Geological Survey. The quake, which occurred just after 1:40 a.m., was felt across the surrounding region but there are no immediate reports of significant damage or injuries.
Why it matters
Earthquakes of this size are relatively common in California's seismically active regions, though they can still cause concern and disruption among local residents. While this quake appears to have been relatively minor, it serves as a reminder of the ongoing seismic activity in the area and the need for preparedness.
The details
The U.S. Geological Survey reported that the magnitude 4.6 earthquake was centered about 9 miles northeast of Boulder Creek, a small town in the Santa Cruz Mountains. The quake had a depth of about 3.7 miles. Residents across the region, including in nearby cities like Santa Cruz and Watsonville, reported feeling the shaking, but there have been no immediate reports of major damage or injuries.
- The earthquake struck at 1:41 a.m. on Thursday, April 20, 2026.
The players
U.S. Geological Survey
The U.S. Geological Survey is a scientific agency of the United States government that studies the landscape of the United States, its natural resources, and the natural hazards that threaten it.
Boulder Creek
A small town in the Santa Cruz Mountains of California, located about 9 miles from the epicenter of the earthquake.
What’s next
The U.S. Geological Survey will continue to monitor the area for any aftershocks or additional seismic activity in the coming days.
The takeaway
This earthquake serves as a reminder that California's seismic activity remains an ongoing concern, even for relatively minor tremors. Local residents and officials will likely review emergency preparedness plans to ensure they are ready to respond to any future quakes in the region.
