3.0

M3.0 Earthquake 98 km SSE of Adak, Alaska — April 24, 2025

2025-04-24 15:23:16 UTC (2025-04-24) · approx. 3:23 AM UTC-12 local

MagnitudeM3.0(ml)
Time15:23 UTC≈ 3:23 AM UTC-12
Depth12.3 kmshallow crustal
Coordinates51.050°, -176.106°
Felt byNo felt reports
Status✓ Reviewed by USGS

On April 24, 2025 at 15:23 UTC, a magnitude 3.0 shallow crustal earthquake struck 98 km SSE of Adak, Alaska, at a depth of 12.3 km and coordinates 51.0505°, -176.1057°.

Physical scale: An earthquake of magnitude 3.0 releases seismic energy equivalent to roughly 477 kg of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 71 m — a useful intuition for the size of the slip patch on the fault.

Map showing earthquake epicenter at 51.05°, -176.11°

Earthquake Details

Magnitude
3.0 ml
Depth
12.3 km
shallow crustal
Location
51.0505°N
-176.1057°E

Technical Information

Event ID
ak02558sc0wc
Event Type
earthquake
Status
✓ Reviewed
Significance
138
RMS Residual
0.34 sec
Last Updated
2025-08-05 20:23:29 UTC

Common Questions

How strong was the magnitude 3.0 earthquake near Adak, Alaska?

The magnitude 3.0 earthquake that struck 98 km SSE of Adak, Alaska on April 24, 2025 at 15:23 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 3.0 earthquakes can continue for several days and gradually diminish over time.

Understanding This Data

Magnitude 3.0 earthquakes are typically only recorded by instruments.

Learn more about magnitude →

Authoritative source: USGS event page (event ID: ak02558sc0wc). All scientific values on this page are sourced verbatim from the USGS feed.

Cite this page: EarthquakeTracker.org. (2025, April 24, 2025). M3.0 Earthquake 98 km SSE of Adak, Alaska — April 24, 2025. Retrieved August 5, 2025 from https://www.earthquaketracker.org/earthquakes/event/ak02558sc0wc/