M5.0

M 5.0 - 103 km SSE of Sand Point, Alaska

Moderate Earthquake · August 26, 2025 · 103 km SSE of Sand Point, Alaska

Key Insights

•This M5.0 moderate earthquake ranks #339 out of 470 events in the database.
•At M5.0, this is 0.7 points below the database average of M5.7.
•The 31.2 km focal depth is classified as intermediate (average: 27 km across all events).
•3 people reported feeling this earthquake via the USGS "Did You Feel It?" system, with a significance score of 386.

Depth

31.2 km

Tsunami

Felt Reports

Significance

386

Earthquake Details

Magnitude	M5.0(mww)
Classification	Moderate Earthquake
Location	103 km SSE of Sand Point, Alaska
Date & Time	August 26, 2025 17:03:46
Coordinates	54.4380N, 160.0697W
Depth	31.2 km (Intermediate)
Tsunami	No
Felt Reports	3 reports submitted to USGS
CDI (Community Intensity)	3.4
MMI (Modified Mercalli)	3.7
Significance Score	386 / 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 M5.0, 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/us7000qqzj

Frequently Asked Questions

How strong was the 103 km SSE of Sand Point, Alaska earthquake?

The 103 km SSE of Sand Point, Alaska earthquake had a magnitude of 5 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 54.4380N, 160.0697W, at a depth of 31.2 km. This intermediate depth can still produce significant shaking at the surface.

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?

3 people submitted felt reports to the USGS for this earthquake. The Community Decimal Intensity (CDI) reached 3.4, indicating light shaking noticed by some people. The Modified Mercalli Intensity (MMI) was estimated at 3.7.

When did this earthquake happen and how significant was it?

This earthquake occurred on August 26, 2025 at 17:03:46. The USGS assigned it a significance score of 386 out of a possible 3,000, which factors in magnitude, felt reports, and potential impact. This is a relatively routine seismic event.

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Key Insights

•This M5.0 moderate earthquake ranks #339 out of 470 events in the database.

•At M5.0, this is 0.7 points below the database average of M5.7.

•The 31.2 km focal depth is classified as intermediate (average: 27 km across all events).

•3 people reported feeling this earthquake via the USGS "Did You Feel It?" system, with a significance score of 386.

Earthquake Details

Magnitude

M5.0(mww)

Classification

Moderate Earthquake

Location

103 km SSE of Sand Point, Alaska

Date & Time

August 26, 2025 17:03:46

Coordinates

54.4380N, 160.0697W

Depth

31.2 km (Intermediate)

Tsunami

Felt Reports

3 reports submitted to USGS

CDI (Community Intensity)

3.4

MMI (Modified Mercalli)

3.7

Significance Score

386 / 3,000

Status

reviewed