Earthquakes medium

M 4.2 Earthquake 33 km SSW of Segundo, Colorado

Source: USGS · Colorado

A magnitude 4.2 earthquake was recorded by USGS near 33 km SSW of Segundo. On the USGS Earthquake Hazards Program scale, M4.2 is classified "Light". Among the 1,740 earthquake reports Areazine has published, this M4.2 event ranks stronger than 49% of them (rank #862 by magnitude).

This earthquake report, quickly

Magnitude
M 4.2
USGS class
Light
Location
33 km SSW of Segundo
Archive rank
#862 of 1,740
Source
USGS
Published
August 3, 2026
LIGHT

Out of 1,740 earthquake reports Areazine has logged, this one outranks 49% of them — 861 recorded a higher magnitude.

Record status: a snapshot from USGS, not a final record. Check USGS's own event page for aftershocks and any later revision to the magnitude shown here.

What Happened

A magnitude 4.2 ml earthquake struck 33 km SSW of Segundo, Colorado, on June 5, 2026, at 12:01 UTC. The event was recorded at a depth of 6.217 km.

Location Details

The earthquake was centered at latitude 36.8335, longitude -104.8326. This places it in southern Colorado. The shallow depth of 6.217 km is classified as shallow (less than 20 km).

Impact Assessment

The earthquake was felt by 2 people, with a maximum reported intensity (CDI) of 2.2. No tsunami was generated (tsunami advisory status: 0). No alert level was issued.

What You Should Know

Earthquakes of this magnitude (M 4.0-4.9) are typically noticeable but cause little to no damage. Residents should be prepared for possible aftershocks and follow standard earthquake safety practices such as dropping, covering, and holding on during shaking.

Source

Data from USGS: https://earthquake.usgs.gov/earthquakes/eventpage/us6000tadn

Original source: USGS Official Notice ↗

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Common Questions

Common questions about this USGS earthquake report.

What magnitude was this earthquake? ▾
A magnitude 4.2 ml earthquake occurred 33 km SSW of Segundo, Colorado, at a shallow depth of 6.2 km.
What does an M4.2 "Light" reading actually indicate? ▾
The USGS classifies M4.2 as "Light" on its Earthquake Hazards Program scale. Events in this range are often felt near the epicenter and can cause minor damage to vulnerable structures, though widespread damage is uncommon.
Is this earthquake stronger or weaker than others in the archive? ▾
This is the #862 strongest of the 1,740 earthquake reports in Areazine's archive by magnitude, stronger than 49% of them and weaker than 861 others.
Was Segundo likely to feel this earthquake? ▾
This event was centered 33 km SSW of Segundo. Shaking intensity falls off sharply with distance from the epicenter and depends on depth and local geology, so check the USGS "Did You Feel It?" report for this event for real felt-shaking data rather than assuming from magnitude and distance alone.

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