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M 3.8 Earthquake 21 km NE of Granger, Wyoming

Source: USGS · Wyoming

A magnitude 3.8 earthquake was recorded by USGS near 21 km NE of Granger. On the USGS Earthquake Hazards Program scale, M3.8 is classified "Minor". Among the 1,707 earthquake reports Areazine has published, this M3.8 event ranks stronger than 42% of them (rank #962 by magnitude).

Read this earthquake report in 30 seconds

Magnitude
M 3.8
USGS class
Minor
Location
21 km NE of Granger
Archive rank
#962 of 1,707
Source
USGS
Published
September 12, 2026
MINOR

Stronger than 42% of the 1,707 earthquake reports in Areazine's archive, weaker than 961 others.

Record status: a point-in-time USGS detection. Aftershocks, revised magnitude, and felt-report data continue to update on USGS's own event page after publication.

What Happened

A magnitude 3.82 ml earthquake occurred at 05:25 UTC on October 12, 2026 (Unix timestamp 1789190749280). The event was located 21 km NE of Granger, Wyoming, with a depth of 3.98 km.

Location Details

The epicenter was at coordinates 41.749, -109.808666666667, approximately 21 km northeast of Granger, Wyoming. The shallow depth of 3.98 km classifies it as a shallow earthquake (less than 20 km).

Impact Assessment

No felt reports, tsunami advisory, or alert level information is available in the source data. The tsunami flag is recorded as 0.

What You Should Know

Earthquakes of this magnitude (M 2.5-3.9) are often felt but rarely cause damage. Aftershocks remain possible following any seismic event.

Source

Data from USGS: https://earthquake.usgs.gov/earthquakes/eventpage/uu80156391

Original source: USGS Official Notice ↗

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Comparable nationwide notices (length or severity timing) 8

Two Areazine-derived peer sets for this USGS earthquake report: nearest notices by body length and by same severity near the same agency date. Peers come from other categories so they are not the same-feed Related list above.

Similar body length

Nearest notices by article body length (820 characters here).

Bushfire Alert in Gundaroo and Yass Valley 820 chars Orange Severe Thunderstorm Warning Issued for R.M. of Estevan 820 chars Red Tornado Warning in Effect for Westman Manitoba 820 chars Red Tornado Warning Issued for Northern Huron County 820 chars

Similar severity timing

Same severity (low) notices issued closest in time to September 12, 2026.

Yellow Frost Advisory for Edmundston and Madawaska County low Burn Off Alert: Douglas Park Dr, Douglas Park low M 2.8 ml Earthquake Reported in English Channel low Paragon 28 Navicular Cage Implant Recall low

Common Questions

Common questions about this USGS earthquake report.

What magnitude was this earthquake? ▾
A magnitude 3.8 ml earthquake struck 21 km northeast of Granger, Wyoming at a depth of 3.98 km.
What does a magnitude 3.8 ("Minor") earthquake mean? ▾
The USGS classifies M3.8 as "Minor" 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.
How does this compare with other earthquakes Areazine has reported? ▾
This is the #962 strongest of the 1,707 earthquake reports in Areazine's archive by magnitude, stronger than 42% of them and weaker than 961 others.
Was Granger likely to feel this earthquake? ▾
This event was centered 21 km NE of Granger. 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.

Primary source data

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