M1.8 Depth: 93.6 km

M1.8 Earthquake near 56 km NNE of Petersville, Alaska (United States)

UTC time: 2025-10-21 11:25:18 UTC Local time: —

About this earthquake

On October 21, 2025 at 11:25 UTC, a magnitude M1.8 earthquake occurred near 56 km NNE of Petersville, Alaska (United States). At around 94 km, the focal depth places this among intermediate-depth events. Events of this size typically go unnoticed.

The event was recorded by USGS. United States: over the past 24 hours, QuakeMap24 logged 184 earthquakes, the strongest at M4.7.

Details

Magnitude

M1.8

Depth

93.6 km

UTC time

2025-10-21 11:25:18 UTC

Local time

—

Country

United States

City

Alaska

Source

usgs

Coordinates

62.98650, -150.48870

Temperature

-7.0°C

Map

Depth profile

Intermediate

93.6 km

93.6 km — deeper than the regional average (15.4 km)

Regional average: 15.4 km

Why depth matters

Intermediate-depth quakes are felt across a wider area but usually cause less surface damage.

Depth classes per USGS

Volcanoes nearby

Buzzard Creek

Distance: 157 km ·Tuff ring(s) ·Elevation: 830 m ·Last eruption: -1050 ·United States
Hayes

Distance: 180 km ·Stratovolcano ·Elevation: 3'034 m ·Last eruption: 1200 ·United States
Spurr

Distance: 209 km ·Stratovolcano ·Elevation: 3'374 m ·Last eruption: 1992 ·United States
Redoubt

Distance: 302 km ·Stratovolcano ·Elevation: 3'108 m ·Last eruption: 2009 ·United States
Wrangell

Distance: 350 km ·Shield ·Elevation: 4'278 m ·Last eruption: 1912 ·United States
Iliamna

Distance: 356 km ·Stratovolcano ·Elevation: 3'053 m ·Last eruption: 1876 ·United States

Historic earthquake map · United States

Open history map

Explore recent and long-term earthquake activity in this country. Use filters to narrow down by magnitude, depth, and date range.

Country statistics · United States

Country overview

View earthquake KPIs, strongest and latest events, and averages for this country.

Stats (last 24h)

Global (24h)

590

Country (24h)