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M1.6 Depth: 30.7 km

M1.6 Earthquake near 13 km WSW of Big Lake, Alaska (United States)

UTC time: 2025-08-20 00:17:57 UTC Local time: —

About this earthquake

A magnitude M1.6 earthquake was recorded near 13 km WSW of Big Lake, Alaska (United States) on August 20, 2025 at 00:17 UTC. The hypocenter lay relatively close to the surface at around 31 km, increasing how strongly it was felt. Earthquakes of this small magnitude are usually barely noticeable and cause no damage.

The event was recorded by USGS. United States: 210 earthquakes were recorded in the past 24 hours, the strongest reaching M3.7.

Details

Magnitude
M1.6
Depth
30.7 km
UTC time
2025-08-20 00:17:57 UTC
Local time
—
Country
United States
City
Alaska
Source
usgs
Coordinates
61.45790, -150.16650
Temperature
13.8°C

Map

Depth profile

Depth profile Depth: 30.7 km (Shallow) Surface Shallow Intermediate Deep 0 km 70 km 300 km 700 km 30.7 km
Shallow
30.7 km
30.7 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

  • Spurr
    Distance: 112 km ·Stratovolcano ·Elevation: 3'374 m ·Last eruption: 1992 ·United States
  • Hayes
    Distance: 121 km ·Stratovolcano ·Elevation: 3'034 m ·Last eruption: 1200 ·United States
  • Redoubt
    Distance: 176 km ·Stratovolcano ·Elevation: 3'108 m ·Last eruption: 2009 ·United States
  • Iliamna
    Distance: 224 km ·Stratovolcano ·Elevation: 3'053 m ·Last eruption: 1876 ·United States
  • Augustine
    Distance: 294 km ·Lava dome(s) ·Elevation: 1'218 m ·Last eruption: 2006 ·United States
  • Buzzard Creek
    Distance: 303 km ·Tuff ring(s) ·Elevation: 830 m ·Last eruption: -1050 ·United States

Historic earthquake map · United States

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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.

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