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M2.5 Depth: 54.9 km

M2.5 Earthquake near 40 km SW of Karluk, Alaska (United States)

UTC time: 2025-10-21 19:27:05 UTC Local time: —

About this earthquake

On October 21, 2025 at 19:27 UTC, a magnitude M2.5 earthquake occurred near 40 km SW of Karluk, Alaska (United States). The hypocenter lay relatively close to the surface at around 55 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 187 earthquakes, the strongest at M4.7.

Details

Magnitude
M2.5
Depth
54.9 km
UTC time
2025-10-21 19:27:05 UTC
Local time
—
Country
United States
City
Alaska
Source
usgs
Coordinates
57.29230, -154.88250
Temperature
7.6°C

Map

Depth profile

Depth profile Depth: 54.9 km (Shallow) Surface Shallow Intermediate Deep 0 km 70 km 300 km 700 km 54.9 km
Shallow
54.9 km
54.9 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

  • Alaska Peninsula Arc at 155.4°W
    Distance: 72 km ·Lava dome ·Elevation: 402 m ·United States
  • Martin
    Distance: 102 km ·Stratovolcano ·Elevation: 1'863 m ·Last eruption: 1953 ·United States
  • Ugashik-Peulik
    Distance: 102 km ·Stratovolcano ·Elevation: 1'474 m ·Last eruption: 1814 ·United States
  • Mageik
    Distance: 103 km ·Stratovolcano ·Elevation: 2'165 m ·Last eruption: -500 ·United States
  • Trident
    Distance: 106 km ·Stratovolcano ·Elevation: 1'864 m ·Last eruption: 1974 ·United States
  • Novarupta
    Distance: 109 km ·Caldera ·Elevation: 841 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.

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