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M1.6 Depth: 87.7 km

M1.6 Earthquake near 68 km W of Nanwalek, Alaska (United States)

UTC time: 2025-09-21 15:45:34 UTC Local time: —

About this earthquake

On September 21, 2025 at 15:45 UTC, a magnitude M1.6 earthquake occurred near 68 km W of Nanwalek, Alaska (United States). At around 88 km, the focal depth places this among intermediate-depth events. Events of this size typically go unnoticed.

The event was recorded by USGS. United States: over the past 24 hours, QuakeMap24 logged 160 earthquakes, the strongest at M3.7.

Details

Magnitude
M1.6
Depth
87.7 km
UTC time
2025-09-21 15:45:34 UTC
Local time
—
Country
United States
City
Alaska
Source
usgs
Coordinates
59.25610, -153.10450
Temperature
11.6°C

Map

Depth profile

Depth profile Depth: 87.7 km (Intermediate) Surface Shallow Intermediate Deep 0 km 70 km 300 km 700 km 87.7 km
Intermediate
87.7 km
87.7 km — deeper than the regional average (15.4 km)
Regional average: 15.4 km
Why depth matters

Intermediate-depth quakes are felt across a wider area but usually cause less surface damage.

Depth classes per USGS

Volcanoes nearby

  • Augustine
    Distance: 22 km ·Lava dome(s) ·Elevation: 1'218 m ·Last eruption: 2006 ·United States
  • Douglas
    Distance: 51 km ·Stratovolcano ·Elevation: 2'140 m ·United States
  • Fourpeaked
    Distance: 63 km ·Stratovolcano ·Elevation: 2'105 m ·Last eruption: 2006 ·United States
  • Iliamna
    Distance: 86 km ·Stratovolcano ·Elevation: 3'053 m ·Last eruption: 1876 ·United States
  • Kaguyak
    Distance: 89 km ·Lava dome(s) ·Elevation: 901 m ·Last eruption: -3850 ·United States
  • Kukak
    Distance: 115 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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