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M0.5 Depth: 57.6 km

M0.5 Earthquake near 61 km NNW of Karluk, Alaska (United States)

UTC time: 2025-08-21 13:17:08 UTC Local time: —

About this earthquake

On August 21, 2025 at 13:17 UTC, a magnitude M0.5 earthquake occurred near 61 km NNW of Karluk, Alaska (United States). The hypocenter lay relatively close to the surface at around 58 km, increasing how strongly it was felt. Earthquakes of this small magnitude are usually barely noticeable and cause no damage.

The data is provided by USGS and cross-checked across seismological networks. United States: over the past 24 hours, QuakeMap24 logged 195 earthquakes, the strongest at M3.7.

Details

Magnitude
M0.5
Depth
57.6 km
UTC time
2025-08-21 13:17:08 UTC
Local time
—
Country
United States
City
Alaska
Source
usgs
Coordinates
58.03530, -155.00570
Temperature
11.8°C

Map

Depth profile

Depth profile Depth: 57.6 km (Shallow) Surface Shallow Intermediate Deep 0 km 70 km 300 km 700 km 57.6 km
Shallow
57.6 km
57.6 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

  • Mageik
    Distance: 23 km ·Stratovolcano ·Elevation: 2'165 m ·Last eruption: -500 ·United States
  • Trident
    Distance: 23 km ·Stratovolcano ·Elevation: 1'864 m ·Last eruption: 1974 ·United States
  • Martin
    Distance: 26 km ·Stratovolcano ·Elevation: 1'863 m ·Last eruption: 1953 ·United States
  • Novarupta
    Distance: 27 km ·Caldera ·Elevation: 841 m ·Last eruption: 1912 ·United States
  • Katmai
    Distance: 27 km ·Stratovolcano ·Elevation: 2'047 m ·Last eruption: 1912 ·United States
  • Alaska Peninsula Arc at 155.4°W
    Distance: 30 km ·Lava dome ·Elevation: 402 m ·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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