2.5

M2.5 Earthquake 25 km NNW of Susitna, Alaska — August 30, 2026

2026-08-30 18:25:38 UTC (2026-08-30) · approx. 8:25 AM UTC-10 local

MagnitudeM2.5(ml)
Time18:25 UTC≈ 8:25 AM UTC-10
Depth63.1 kmshallow crustal
Coordinates61.752°, -150.712°
Felt by1DYFI response
Status✓ Reviewed by USGS

On August 30, 2026 at 18:25 UTC, a magnitude 2.5 shallow crustal earthquake struck 25 km NNW of Susitna, Alaska, at a depth of 63.1 km and coordinates 61.7520°, -150.7120°.

Physical scale: An earthquake of magnitude 2.5 releases seismic energy equivalent to roughly 84.8 kg of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 32 m — a useful intuition for the size of the slip patch on the fault.

Map showing earthquake epicenter at 61.75°, -150.71°

Did You Feel It? — community-reported shaking

Aggregated felt-report intensity from 1 citizen response to the USGS Did You Feel It? system. Each colored zone represents the average MMI from reports in that area.

USGS DYFI community-reported intensity map for the M2.5 earthquake near 25 km NNW of Susitna, Alaska

Source: U.S. Geological Survey Did You Feel It?. View on USGS · submit your own report

Earthquake Details

Magnitude
2.5 ml
Depth
63.1 km
shallow crustal
Location
61.7520°N
-150.7120°E
Felt Reports
1
DYFI responses
Community Intensity
1.0
CDI from reports

Technical Information

Event ID
aka2026reoczv
Event Type
earthquake
Status
✓ Reviewed
Significance
96
Stations Used
43
Azimuthal Gap
44.0°
Min Station Distance
0.300°
RMS Residual
0.90 sec
Last Updated
2026-10-02 12:55:41 UTC

Common Questions

How strong was the magnitude 2.5 earthquake near Susitna, Alaska?

The magnitude 2.5 earthquake that struck 25 km NNW of Susitna, Alaska on August 30, 2026 at 18:25 UTC had a depth of 63.1 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 2.5 earthquakes can continue for several days and gradually diminish over time.

Understanding This Data

Magnitude 2.5 earthquakes are typically only recorded by instruments.

Learn more about magnitude →

Authoritative source: USGS event page (event ID: aka2026reoczv). All scientific values on this page are sourced verbatim from the USGS feed.

Cite this page: EarthquakeTracker.org. (2026, August 30, 2026). M2.5 Earthquake 25 km NNW of Susitna, Alaska — August 30, 2026. Retrieved October 2, 2026 from https://www.earthquaketracker.org/earthquakes/event/aka2026reoczv/