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M1.6 Depth: 0.8 km

M1.6 Earthquake near 11 km NNE of Igiugig, Alaska (United States)

UTC time: 2025-08-04 02:20:43 UTC Local time: —

About this earthquake

On August 4, 2025 at 02:20 UTC, a magnitude M1.6 earthquake occurred near 11 km NNE of Igiugig, Alaska (United States). The hypocenter lay relatively close to the surface at around 1 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 238 earthquakes, the strongest at M4.1.

Details

Magnitude
M1.6
Depth
0.8 km
UTC time
2025-08-04 02:20:43 UTC
Local time
—
Country
United States
City
Alaska
Source
usgs
Coordinates
59.42270, -155.79980
Temperature
15.5°C

Map

Depth profile

Depth profile Depth: 0.8 km (Shallow) Surface Shallow Intermediate Deep 0 km 70 km 300 km 700 km 0.8 km
Shallow
0.8 km
0.8 km — shallower than the regional average (15.3 km)
Regional average: 15.3 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

  • Griggs
    Distance: 126 km ·Stratovolcano ·Elevation: 2'317 m ·Last eruption: -1790 ·United States
  • Novarupta
    Distance: 134 km ·Caldera ·Elevation: 841 m ·Last eruption: 1912 ·United States
  • Augustine
    Distance: 134 km ·Lava dome(s) ·Elevation: 1'218 m ·Last eruption: 2006 ·United States
  • Kaguyak
    Distance: 136 km ·Lava dome(s) ·Elevation: 901 m ·Last eruption: -3850 ·United States
  • Denison
    Distance: 136 km ·Stratovolcano ·Elevation: 2'287 m ·United States
  • Kukak
    Distance: 136 km ·Stratovolcano ·Elevation: 2'043 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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