3.6

M3.6 Earthquake 85 km SE of Adak, AlaskaApril 19, 2026

2026-04-19 10:45:09 UTC (7 hours ago)

On April 19, 2026 at 10:45 UTC, a magnitude 3.6 shallow crustal earthquake struck 85 km SE of Adak, Alaska, at a depth of 12.3 km and coordinates 51.3280°, -175.7710°.

Map showing earthquake epicenter at 51.33°, -175.77°

Earthquake Details

Magnitude
3.6 ml
Depth
12.3 km
shallow crustal
Location
51.3280°N
-175.7710°E
Intensity (MMI)
2.5
weak

Technical Information

Event ID
aka2026hrbvan
Event Type
earthquake
Status
✓ Reviewed
Significance
199
Stations Used
20
Azimuthal Gap
238.0°
Min Station Distance
0.700°
RMS Residual
0.70 sec
Last Updated
2026-04-19 16:17:03 UTC

Common Questions

How strong was the magnitude 3.6 earthquake near Adak, Alaska?

The magnitude 3.6 earthquake that struck 85 km SE of Adak, Alaska on April 19, 2026 at 10:45 UTC had a depth of 12.3 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 3.6 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.