M4.2 Earthquake 61 km E of Pedro Bay, Alaska — July 12, 2026
2026-07-12 06:00:44 UTC (1 hour ago) · approx. 8:00 PM UTC-10 local
Felt by 50 people across nearby locations.
On July 12, 2026 at 06:00 UTC, a magnitude 4.2 intermediate depth earthquake struck 61 km E of Pedro Bay, Alaska, at a depth of 106.8 km and coordinates 59.7200°, -153.0260°. The earthquake was reported felt by 50 peopleacross nearby locations, with a maximum shaking intensity of Modified Mercalli Intensity (MMI) 2.8 (weak). This earthquake was detected by 216 seismic stations with excellent location accuracy and was assigned a USGS significance rating of 285, placing it among routine seismic activity.
Physical scale: An earthquake of magnitude 4.2 releases seismic energy equivalent to roughly 30 metric tons of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 476 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
ShakeMap — predicted shaking intensity
Modeled ground-motion intensity contoured on the Modified Mercalli scale (MMI). Computed by the USGS from the moment-tensor solution and regional ground-motion prediction equations.
Source: U.S. Geological Survey ShakeMap. View interactive ShakeMap on USGS
Did You Feel It? — community-reported shaking
Aggregated felt-report intensity from 50 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
-153.0260°E
Technical Information
Nearby Earthquakes (Last 7 Days)
Common Questions
How strong was the magnitude 4.2 earthquake near Pedro Bay, Alaska?
The magnitude 4.2 earthquake that struck 61 km E of Pedro Bay, Alaska on July 12, 2026 at 06:00 UTC had a depth of 106.8 km. It was felt by 50 people with maximum shaking intensity of MMI 2.8 (weak). For context, this was a light earthquake commonly felt near the epicenter.
Where did the earthquake occur?
The earthquake epicenter was located at 59.7200°, -153.0260°, which is 61 km E of Pedro Bay, Alaska. View all earthquakes in Alaska.
Were there aftershocks?
Aftershock activity is monitored continuously by the USGS. Aftershock sequences from magnitude 4.2 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 4.2 event is significantly smaller than that historical record.
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.
Authoritative source: USGS event page (event ID: aka2026nrcfxi). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2026, July 12, 2026). M4.2 Earthquake 61 km E of Pedro Bay, Alaska — July 12, 2026. Retrieved July 12, 2026 from https://www.earthquaketracker.org/earthquakes/event/aka2026nrcfxi/