M3.1 Earthquake 9 km NW of Kodiak, Alaska — August 12, 2026
2026-08-12 15:11:36 UTC (1 hour ago) · approx. 5:11 AM UTC-10 local
Felt by 66 people across nearby locations.
On August 12, 2026 at 15:11 UTC, a magnitude 3.1 shallow crustal earthquake struck 9 km NW of Kodiak, Alaska, at a depth of 5.0 km and coordinates 57.8410°, -152.5210°. This earthquake was detected by 76 seismic stations with good location accuracy and was assigned a USGS significance rating of 173, placing it among routine seismic activity.
Physical scale: An earthquake of magnitude 3.1 releases seismic energy equivalent to roughly 674 kg of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 83 m — a useful intuition for the size of the slip patch on the fault.
The epicenter is located in Alaska, a region characterized by Pacific Plate subduction beneath the North American Plate, producing frequent megathrust and crustal earthquakes along the Aleutian arc. The nearest mapped fault system is the Aleutian megathrust. View all earthquakes in Alaska.
Learn more: Magnitude scale · Aftershock sequences
Did You Feel It? — community-reported shaking
Aggregated felt-report intensity from 66 citizen responses to the USGS Did You Feel It? system. Each colored zone represents the average MMI from reports in that area.
Source: U.S. Geological Survey Did You Feel It?. View on USGS · submit your own report
Earthquake Details
-152.5210°E
Technical Information
Nearby Earthquakes (Last 7 Days)
Common Questions
How strong was the magnitude 3.1 earthquake near Kodiak, Alaska?
The magnitude 3.1 earthquake that struck 9 km NW of Kodiak, Alaska on August 12, 2026 at 15:11 UTC had a depth of 5.0 km. For context, this was a minor earthquake typically detected only by instruments.
Where did the earthquake occur?
The earthquake epicenter was located at 57.8410°, -152.5210°, which is 9 km NW of Kodiak, Alaska. View all earthquakes in Alaska.
Were there aftershocks?
Aftershock activity is monitored continuously by the USGS. Aftershock sequences from magnitude 3.1 earthquakes can continue for several days and gradually diminish over time.
Has Alaska had earthquakes this big before?
The largest recorded earthquake in Alaska was the M9.2 Great Alaska earthquake of March 27, 1964. Today's magnitude 3.1 event is significantly smaller than that historical record.
Authoritative source: USGS event page (event ID: aka2026pxbhdx). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2026, August 12, 2026). M3.1 Earthquake 9 km NW of Kodiak, Alaska — August 12, 2026. Retrieved August 12, 2026 from https://www.earthquaketracker.org/earthquakes/event/aka2026pxbhdx/