M5.3

M 5.3 - Beaufort Sea

Moderate Earthquake · October 25, 2025 · Beaufort Sea

Key Insights

•This M5.3 moderate earthquake ranks #303 out of 470 events in the database.
•At M5.3, this is 0.4 points below the database average of M5.7.
•At 10.0 km depth, this is classified as a shallow earthquake. Shallow quakes typically cause stronger ground shaking and more damage than deeper events (avg depth: 27 km).

Depth

10.0 km

Tsunami

Felt Reports

None

Significance

432

Earthquake Details

Magnitude	M5.3(mww)
Classification	Moderate Earthquake
Location	Beaufort Sea
Date & Time	October 25, 2025 15:34:01
Coordinates	71.6491N, 131.7601W
Depth	10.0 km (Shallow)
Tsunami	No
Significance Score	432 / 3,000
Status	reviewed

Magnitude Scale Context

Minor

3-3.9

Light

4-4.9

Moderate

5-5.9

Strong

6-6.9

Major

At M5.3, this is classified as a Moderate earthquake. Earthquakes of this size can cause moderate damage to vulnerable structures and are widely felt.

Official USGS Page: https://earthquake.usgs.gov/earthquakes/eventpage/us6000rje7

Frequently Asked Questions

How strong was the Beaufort Sea earthquake?

The Beaufort Sea earthquake had a magnitude of 5.3 mww, classified as a "Moderate" earthquake on the magnitude scale. Earthquakes of this magnitude can cause damage to poorly constructed buildings and are felt widely.

Where exactly did this earthquake occur and how deep was it?

This earthquake struck at coordinates 71.6491N, 131.7601W, at a depth of 10.0 km. Shallow earthquakes (under 20 km) tend to cause more surface damage than deeper events.

Did this earthquake trigger a tsunami warning?

No tsunami warning was issued for this earthquake. Earthquakes below magnitude 6.5 rarely generate dangerous tsunamis, though localized effects are possible in rare cases.

How many people felt this earthquake?

No felt reports were submitted to the USGS for this earthquake. This may indicate the earthquake occurred in a remote area with few nearby residents, or the shaking was too minor to be widely noticed.

When did this earthquake happen and how significant was it?

This earthquake occurred on October 25, 2025 at 15:34:01. The USGS assigned it a significance score of 432 out of a possible 3,000, which factors in magnitude, felt reports, and potential impact. This is a moderately significant seismic event.

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