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M1.7 Depth: 220.7 km

M1.7 Earthquake near 22 km ESE of Portage Creek, Alaska (United States)

UTC time: 2025-08-20 01:42:13 UTC Local time: —

About this earthquake

A magnitude M1.7 earthquake was recorded near 22 km ESE of Portage Creek, Alaska (United States) on August 20, 2025 at 01:42 UTC. The earthquake originated at an intermediate depth of about 221 km. 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 210 earthquakes, the strongest at M3.7.

Details

Magnitude
M1.7
Depth
220.7 km
UTC time
2025-08-20 01:42:13 UTC
Local time
—
Country
United States
City
Alaska
Source
usgs
Coordinates
58.86200, -157.32890
Temperature
18.0°C

Map

Depth profile

Depth profile Depth: 220.7 km (Intermediate) Surface Shallow Intermediate Deep 0 km 70 km 300 km 700 km 220.7 km
Intermediate
220.7 km
220.7 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

  • Ukinrek Maars
    Distance: 124 km ·Maar(s) ·Elevation: 91 m ·Last eruption: 1977 ·United States
  • Ugashik-Peulik
    Distance: 136 km ·Stratovolcano ·Elevation: 1'474 m ·Last eruption: 1814 ·United States
  • Martin
    Distance: 138 km ·Stratovolcano ·Elevation: 1'863 m ·Last eruption: 1953 ·United States
  • Griggs
    Distance: 141 km ·Stratovolcano ·Elevation: 2'317 m ·Last eruption: -1790 ·United States
  • Mageik
    Distance: 141 km ·Stratovolcano ·Elevation: 2'165 m ·Last eruption: -500 ·United States
  • Novarupta
    Distance: 142 km ·Caldera ·Elevation: 841 m ·Last eruption: 1912 ·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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