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M1.1 Depth: 19.9 km

M1.1 Earthquake near 9 km ENE of Big Delta, Alaska (United States)

UTC time: 2025-10-09 17:38:08 UTC Local time: —

About this earthquake

A magnitude M1.1 earthquake was recorded near 9 km ENE of Big Delta, Alaska (United States) on October 9, 2025 at 17:38 UTC. With a focal depth of about 20 km, this was a shallow earthquake, whose shaking is usually felt more strongly at the surface. 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: 191 earthquakes were recorded in the past 24 hours, the strongest reaching M5.5.

Details

Magnitude
M1.1
Depth
19.9 km
UTC time
2025-10-09 17:38:08 UTC
Local time
—
Country
United States
City
Alaska
Source
usgs
Coordinates
64.19880, -145.68120
Temperature
4.7°C

Map

Depth profile

Depth profile Depth: 19.9 km (Shallow) Surface Shallow Intermediate Deep 0 km 70 km 300 km 700 km 19.9 km
Shallow
19.9 km
19.9 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

  • Buzzard Creek
    Distance: 134 km ·Tuff ring(s) ·Elevation: 830 m ·Last eruption: -1050 ·United States
  • Wrangell
    Distance: 258 km ·Shield ·Elevation: 4'278 m ·Last eruption: 1912 ·United States
  • Churchill
    Distance: 372 km ·Stratovolcano ·Elevation: 5'005 m ·Last eruption: 847 ·United States
  • Fort Selkirk
    Distance: 434 km ·Volcanic field ·Elevation: 1'239 m ·Canada
  • Hayes
    Distance: 443 km ·Stratovolcano ·Elevation: 3'034 m ·Last eruption: 1200 ·United States
  • Spurr
    Distance: 464 km ·Stratovolcano ·Elevation: 3'374 m ·Last eruption: 1992 ·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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