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M1.1 Depth: 16.5 km

M1.1 Earthquake near 19 km SW of Petersville, Alaska (United States)

UTC time: 2025-08-23 13:48:59 UTC Local time: —

About this earthquake

On August 23, 2025 at 13:48 UTC, a magnitude M1.1 earthquake occurred near 19 km SW of Petersville, Alaska (United States). The hypocenter lay relatively close to the surface at around 17 km, increasing how strongly it was felt. Events of this size typically go unnoticed.

The event was recorded by USGS. United States: 198 earthquakes were recorded in the past 24 hours, the strongest reaching M3.7.

Details

Magnitude
M1.1
Depth
16.5 km
UTC time
2025-08-23 13:48:59 UTC
Local time
—
Country
United States
City
Alaska
Source
usgs
Coordinates
62.38800, -151.06330
Temperature
9.8°C

Map

Depth profile

Depth profile Depth: 16.5 km (Shallow) Surface Shallow Intermediate Deep 0 km 70 km 300 km 700 km 16.5 km
Shallow
16.5 km
16.5 km — close to the regional average (15.4 km)
Regional average: 15.4 km
Why depth matters

Shallow quakes release energy near the surface — shaking is felt more strongly and damage potential is higher.

Depth classes per USGS

Volcanoes nearby

  • Hayes
    Distance: 109 km ·Stratovolcano ·Elevation: 3'034 m ·Last eruption: 1200 ·United States
  • Spurr
    Distance: 136 km ·Stratovolcano ·Elevation: 3'374 m ·Last eruption: 1992 ·United States
  • Buzzard Creek
    Distance: 228 km ·Tuff ring(s) ·Elevation: 830 m ·Last eruption: -1050 ·United States
  • Redoubt
    Distance: 230 km ·Stratovolcano ·Elevation: 3'108 m ·Last eruption: 2009 ·United States
  • Iliamna
    Distance: 284 km ·Stratovolcano ·Elevation: 3'053 m ·Last eruption: 1876 ·United States
  • Augustine
    Distance: 360 km ·Lava dome(s) ·Elevation: 1'218 m ·Last eruption: 2006 ·United States

Historic earthquake map · United States

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Country statistics · United States

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

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