2.5

M2.5 Earthquake 49 km ESE of Chignik, Alaska — September 18, 2026

2026-09-18 21:11:40 UTC (2026-09-18) · approx. 10:11 AM UTC-11 local

MagnitudeM2.5(ml)
Time21:11 UTC≈ 10:11 AM UTC-11
Depth51.9 kmshallow crustal
Coordinates56.188°, -157.621°
Felt byNo felt reports
Status✓ Reviewed by USGS
Map showing earthquake epicenter at 56.19°, -157.62°

Earthquake Details

Magnitude
2.5 ml
Depth
51.9 km
shallow crustal
Location
56.1880°N
-157.6210°E

Technical Information

Event ID
aka2026snwcjc
Event Type
earthquake
Status
✓ Reviewed
Significance
96
Stations Used
51
Azimuthal Gap
171.0°
Min Station Distance
0.500°
RMS Residual
0.50 sec
Last Updated
2026-09-24 19:23:15 UTC

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Actions

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Location

Alaska
View all Alaska earthquakes

Understanding This Data

Magnitude 2.5 earthquakes are typically only recorded by instruments.

Learn more about magnitude →

Authoritative source: USGS event page (event ID: aka2026snwcjc). All scientific values on this page are sourced verbatim from the USGS feed.

Cite this page: EarthquakeTracker.org. (2026, September 18, 2026). M2.5 Earthquake 49 km ESE of Chignik, Alaska — September 18, 2026. Retrieved September 24, 2026 from https://www.earthquaketracker.org/earthquakes/event/aka2026snwcjc/