M4.8

M 4.8 - Revilla Gigedo Islands region

Light Earthquake · October 15, 2025 · Revilla Gigedo Islands region

Key Insights

•This M4.8 light earthquake ranks #371 out of 470 events in the database.
•At M4.8, this is 0.9 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

354

Earthquake Details

Magnitude	M4.8(mww)
Classification	Light Earthquake
Location	Revilla Gigedo Islands region
Date & Time	October 15, 2025 01:20:52
Coordinates	19.8853N, 109.4657W
Depth	10.0 km (Shallow)
Tsunami	No
Significance Score	354 / 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 M4.8, this is classified as a Light earthquake. Earthquakes of this size are felt by most people and may cause minor damage near the epicenter.

Official USGS Page: https://earthquake.usgs.gov/earthquakes/eventpage/us6000rh4j

Frequently Asked Questions

How strong was the Revilla Gigedo Islands region earthquake?

The Revilla Gigedo Islands region earthquake had a magnitude of 4.8 mww, classified as a "Light" earthquake on the magnitude scale. Earthquakes of this magnitude are typically felt by people nearby but rarely cause significant structural damage.

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

This earthquake struck at coordinates 19.8853N, 109.4657W, 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 15, 2025 at 01:20:52. The USGS assigned it a significance score of 354 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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