M3.3 Earthquake 188 km SE of Perryville, Alaska — April 20, 2026
2026-04-20 20:39:19 UTC (4 hours ago)
On April 20, 2026 at 20:39 UTC, a magnitude 3.3 shallow crustal earthquake struck 188 km SE of Perryville, Alaska, at a depth of 31.1 km and coordinates 54.7930°, -156.9230°.
Earthquake Details
-156.9230°E
Technical Information
Nearby Earthquakes (Last 7 Days)
Common Questions
How strong was the magnitude 3.3 earthquake near Perryville, Alaska?
The magnitude 3.3 earthquake that struck 188 km SE of Perryville, Alaska on April 20, 2026 at 20:39 UTC had a depth of 31.1 km. For context, this was a minor earthquake typically detected only by instruments.
Were there aftershocks?
Aftershock activity is monitored continuously by the USGS. Aftershock sequences from magnitude 3.3 earthquakes can continue for several days and gradually diminish over time.
What should I do after an earthquake?
If you were in the affected area: check yourself and others for injuries, inspect your home for damage, and be prepared for aftershocks. For detailed guidance, see our earthquake safety guide and emergency planning resources.
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Understanding This Data
Magnitude 3.3 earthquakes are typically only recorded by instruments.