M6.3

M 6.3 - Revilla Gigedo Islands region

Strong Earthquake · November 1, 2011 · Revilla Gigedo Islands region

Key Insights

•This M6.3 strong earthquake ranks #107 out of 470 events in the database.
•At M6.3, this is 0.6 points above the database average of M5.7. Each whole magnitude point represents roughly 32x more energy released.
•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).
•A USGS significance score of 612 places this among the 265 most impactful events tracked, based on magnitude, felt reports, and damage potential.

Depth

10.0 km

Tsunami

Felt Reports

Significance

612

Earthquake Details

Magnitude	M6.3(mww)
Classification	Strong Earthquake
Location	Revilla Gigedo Islands region
Date & Time	November 1, 2011 21:32:00
Coordinates	19.8310N, 109.2050W
Depth	10.0 km (Shallow)
Tsunami	No
Felt Reports	7 reports submitted to USGS
CDI (Community Intensity)	2.0
Significance Score	612 / 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 M6.3, this is classified as a Strong earthquake. Earthquakes of this size can cause severe damage in populated areas within tens of miles of the epicenter.

Official USGS Page: https://earthquake.usgs.gov/earthquakes/eventpage/usp000ja6t

Frequently Asked Questions

How strong was the Revilla Gigedo Islands region earthquake?

The Revilla Gigedo Islands region earthquake had a magnitude of 6.3 mww, classified as a "Strong" earthquake on the magnitude scale. Earthquakes of this size can cause serious damage to buildings and infrastructure over a wide area.

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

This earthquake struck at coordinates 19.8310N, 109.2050W, 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?

7 people submitted felt reports to the USGS for this earthquake. The Community Decimal Intensity (CDI) reached 2.0, indicating light shaking noticed by some people.

When did this earthquake happen and how significant was it?

This earthquake occurred on November 1, 2011 at 21:32:00. The USGS assigned it a significance score of 612 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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Key Insights

•This M6.3 strong earthquake ranks #107 out of 470 events in the database.

•At M6.3, this is 0.6 points above the database average of M5.7. Each whole magnitude point represents roughly 32x more energy released.

•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).

•A USGS significance score of 612 places this among the 265 most impactful events tracked, based on magnitude, felt reports, and damage potential.

Frequently Asked Questions

How strong was the Revilla Gigedo Islands region earthquake?

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

This earthquake struck at coordinates 19.8310N, 109.2050W, 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?

7 people submitted felt reports to the USGS for this earthquake. The Community Decimal Intensity (CDI) reached 2.0, indicating light shaking noticed by some people.

When did this earthquake happen and how significant was it?