Earthquakes low

M 3.1 ml Earthquake 20 km NE of Nikolaevsk, Alaska

Source: USGS · Alaska

A magnitude 3.1 earthquake was recorded by USGS near 20 km NE of Nikolaevsk. On the USGS Earthquake Hazards Program scale, M3.1 is classified "Minor". Among the 1,782 earthquake reports Areazine has published, this M3.1 event ranks stronger than 8% of them (rank #1,530 by magnitude).

This earthquake report, quickly

Magnitude
M 3.1
USGS class
Minor
Location
20 km NE of Nikolaevsk
Archive rank
#1,530 of 1,782
Source
USGS
Published
September 21, 2026
MINOR

Out of 1,782 earthquake reports Areazine has logged, this one outranks 8% of them — 1,529 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 M 3.1 ml earthquake struck 20 km NE of Nikolaevsk, Alaska, on October 20, 2026 at 12:58:37 UTC. The event was recorded at a depth of 45.9 km.

Location Details

The earthquake was centered at latitude 59.934, longitude -151.328, approximately 20 km northeast of Nikolaevsk, Alaska. The depth of 45.9 km places it in the intermediate range (20-70 km).

Impact Assessment

No felt reports were recorded. There was no tsunami advisory (tsunami: 0) and no alert level was issued.

What You Should Know

Earthquakes of this magnitude are classified as minor and are often felt but rarely cause damage. Aftershocks remain possible.

Source

https://earthquake.usgs.gov/earthquakes/eventpage/aka2026ssnawb - USGS

Original source: USGS Official Notice ↗

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Comparable nationwide notices (length or severity timing) 8

Beyond this USGS earthquake report's own category, Areazine surfaces two nationwide peer sets: length-matched and severity/date-matched notices from elsewhere in the archive, distinct from the same-feed Related list above.

Similar body length

Nearest notices by article body length (732 characters here).

Bushfire Advice Alert for Jackadgery and Clarence Valley 732 chars Grass Fire Alert on New England Hwy in Kentucky 732 chars Planned Burn Alert in Camberwell, NSW 732 chars Squall Warning in Effect for Eastern Lake Ontario (May 10, 2026) 732 chars

Similar severity timing

Same severity (low) notices issued closest in time to September 21, 2026.

M 2.7 ml Earthquake Reported in England on September 21, 2026 low Yellow Frost Advisory for Red Lake - Woodland Caribou Park (Sep 21, 2026) low Yellow Frost Advisory for Nipigon - Rossport low M 2.7 ml Earthquake Reported in France on September 16, 2026 low

Frequently Asked Questions

Questions readers often have about this USGS earthquake report.

How strong was this earthquake? ▾
A magnitude 3.1 ml earthquake occurred 20 km northeast of Nikolaevsk, Alaska, at a depth of 45.9 km.
What does a magnitude 3.1 ("Minor") earthquake mean? ▾
The USGS classifies M3.1 as "Minor" on its Earthquake Hazards Program scale. Events in this range are rarely felt beyond the immediate epicenter and typically cause no damage; most are recorded only by seismographs.
Is this earthquake stronger or weaker than others in the archive? ▾
This is the #1,530 strongest of the 1,782 earthquake reports in Areazine's archive by magnitude, stronger than 8% of them and weaker than 1,529 others.
Was Nikolaevsk likely to feel this earthquake? ▾
This event was centered 20 km NE of Nikolaevsk. 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.

Where this data comes from

EPA Outdoor Air Quality Data

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AirNow (EPA / NOAA)

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National Weather Service

Active watches, warnings, and advisories, NOAA

CDC Air Quality & Health

Health-impact reference behind every AQI category