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M1.1 Depth: 33.9 km

M1.1 Earthquake near 6 km S of Houston, Alaska (United States)

UTC time: 2025-08-23 05:31:07 UTC Local time: —

About this earthquake

A magnitude M1.1 earthquake was recorded near 6 km S of Houston, Alaska (United States) on August 23, 2025 at 05:31 UTC. With a focal depth of about 34 km, this was a shallow earthquake, whose shaking is usually felt more strongly at the surface. Events of this size typically go unnoticed.

The event was recorded by USGS. United States: over the past 24 hours, QuakeMap24 logged 203 earthquakes, the strongest at M3.7.

Details

Magnitude
M1.1
Depth
33.9 km
UTC time
2025-08-23 05:31:07 UTC
Local time
—
Country
United States
City
Alaska
Source
usgs
Coordinates
61.57160, -149.84250
Temperature
10.5°C

Map

Depth profile

Depth profile Depth: 33.9 km (Shallow) Surface Shallow Intermediate Deep 0 km 70 km 300 km 700 km 33.9 km
Shallow
33.9 km
33.9 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

  • Spurr
    Distance: 132 km ·Stratovolcano ·Elevation: 3'374 m ·Last eruption: 1992 ·United States
  • Hayes
    Distance: 136 km ·Stratovolcano ·Elevation: 3'034 m ·Last eruption: 1200 ·United States
  • Redoubt
    Distance: 197 km ·Stratovolcano ·Elevation: 3'108 m ·Last eruption: 2009 ·United States
  • Iliamna
    Distance: 246 km ·Stratovolcano ·Elevation: 3'053 m ·Last eruption: 1876 ·United States
  • Buzzard Creek
    Distance: 286 km ·Tuff ring(s) ·Elevation: 830 m ·Last eruption: -1050 ·United States
  • Wrangell
    Distance: 310 km ·Shield ·Elevation: 4'278 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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