How strong was the earthquake near Kasilof, Alaska?

USGS measured it at magnitude 4.3 at a depth of 70.4 km. Estimated shaking reached 3.3 on the intensity scale.

When did the Kasilof earthquake happen?

It struck at 2:30 AM AKST on Sunday, November 1, 2026, about 24 km southeast of Kasilof.

Did people feel the earthquake near Kasilof?

Yes. 49 people reported feeling it to USGS. Check the USGS event page for the latest information.

Magnitude 4.3 earthquake near Kasilof, Alaska: Nov 1, 2026

Key facts

Magnitude: 4.3 (ml)
Location: 24 km SE of Kasilof, Alaska
Time: 2:30 AM AKST, Sunday, November 1, 2026
Depth: 70.4 km
Felt reports: 49 people reported shaking to USGS
Estimated shaking: intensity 3.3 (USGS ShakeMap)
Tsunami: USGS flagged tsunami potential: check tsunami.gov

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What to do

If you feel shaking, Drop, Cover, and Hold On. Stay where you are until the shaking stops. Expect aftershocks.

After shaking stops, check your home for damage and for gas leaks. Stay out of damaged buildings.

Check the USGS event page for updates and for the latest felt reports.

Context

The USGS estimated shaking at 3.3 on its intensity scale, and community reports averaged 3.8. Both values describe light shaking, and the 49 felt reports come from people who chose to report to USGS.

Since 2000, USGS records show 133 earthquakes of magnitude 4 or greater and 10 of magnitude 5 or greater within 100 km of this location. This shows that earthquakes of this size have happened in this area before.

History here

USGS records 133 earthquakes of magnitude 4 or more within 100 km of this epicenter since 2000, 10 of them magnitude 5 or more.

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Questions

How strong was the earthquake near Kasilof, Alaska?: USGS measured it at magnitude 4.3 at a depth of 70.4 km. Estimated shaking reached 3.3 on the intensity scale.
When did the Kasilof earthquake happen?: It struck at 2:30 AM AKST on Sunday, November 1, 2026, about 24 km southeast of Kasilof.
Did people feel the earthquake near Kasilof?: Yes. 49 people reported feeling it to USGS. Check the USGS event page for the latest information.

Sources

USGS: M 4.3 24 km SE of Kasilof, Alaska usgs.gov
USGS earthquake catalog (history count) usgs.gov

How this page is made. The Herebeat Hazard Desk builds event pages from official U.S. government data (National Weather Service, USGS, FEMA). The text is written with AI from that data; every number and quote is checked against the official source automatically before publishing, and the page is updated when the agency updates the event. The official source is always the reference. Spotted a mistake? info@herebeat.app. About the Hazard Desk.