Back to map
M1.5 Depth: 28.0 km

M1.5 Earthquake near 45 km NNW of Petersville, Alaska (United States)

UTC time: 2025-09-21 16:27:51 UTC Local time: —

About this earthquake

A magnitude M1.5 earthquake was recorded near 45 km NNW of Petersville, Alaska (United States) on September 21, 2025 at 16:27 UTC. The hypocenter lay relatively close to the surface at around 28 km, increasing how strongly it was felt. Events of this size typically go unnoticed.

The data is provided by USGS and cross-checked across seismological networks. United States: 160 earthquakes were recorded in the past 24 hours, the strongest reaching M3.7.

Details

Magnitude
M1.5
Depth
28.0 km
UTC time
2025-09-21 16:27:51 UTC
Local time
—
Country
United States
City
Alaska
Source
usgs
Coordinates
62.87350, -151.09260
Temperature
-3.0°C

Map

Depth profile

Depth profile Depth: 28 km (Shallow) Surface Shallow Intermediate Deep 0 km 70 km 300 km 700 km 28 km
Shallow
28 km
28 km — deeper than 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: 153 km ·Stratovolcano ·Elevation: 3'034 m ·Last eruption: 1200 ·United States
  • Spurr
    Distance: 185 km ·Stratovolcano ·Elevation: 3'374 m ·Last eruption: 1992 ·United States
  • Buzzard Creek
    Distance: 187 km ·Tuff ring(s) ·Elevation: 830 m ·Last eruption: -1050 ·United States
  • Redoubt
    Distance: 279 km ·Stratovolcano ·Elevation: 3'108 m ·Last eruption: 2009 ·United States
  • Iliamna
    Distance: 333 km ·Stratovolcano ·Elevation: 3'053 m ·Last eruption: 1876 ·United States
  • Wrangell
    Distance: 376 km ·Shield ·Elevation: 4'278 m ·Last eruption: 1912 ·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.

Share