M3.9 Earthquake 71 km SE of Ugashik, Alaska — April 18, 2026
2026-04-18 18:53:08 UTC (4 days ago)
On April 18, 2026 at 18:53 UTC, a magnitude 3.9 intermediate depth earthquake struck 71 km SE of Ugashik, Alaska, at a depth of 80.4 km and coordinates 57.0910°, -156.5100°.
Earthquake Details
-156.5100°E
Technical Information
Nearby Earthquakes (Last 7 Days)
Common Questions
How strong was the magnitude 3.9 earthquake near Ugashik, Alaska?
The magnitude 3.9 earthquake that struck 71 km SE of Ugashik, Alaska on April 18, 2026 at 18:53 UTC had a depth of 80.4 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 3.9 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 3.9 earthquakes are typically only recorded by instruments.