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M1.1 Depth: 55.9 km

M1.1 Earthquake near 4 km SW of Houston, Alaska (United States)

UTC time: 2025-09-06 04:51:28 UTC Local time: —

About this earthquake

On September 6, 2025 at 04:51 UTC, a magnitude M1.1 earthquake occurred near 4 km SW of Houston, Alaska (United States). The hypocenter lay relatively close to the surface at around 56 km, increasing how strongly it was felt. Events of this size typically go unnoticed.

The event was recorded by USGS. United States: over the past 24 hours, QuakeMap24 logged 219 earthquakes, the strongest at M3.5.

Details

Magnitude
M1.1
Depth
55.9 km
UTC time
2025-09-06 04:51:28 UTC
Local time
—
Country
United States
City
Alaska
Source
usgs
Coordinates
61.59370, -149.87140
Temperature
11.4°C

Map

Depth profile

Depth profile Depth: 55.9 km (Shallow) Surface Shallow Intermediate Deep 0 km 70 km 300 km 700 km 55.9 km
Shallow
55.9 km
55.9 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: 131 km ·Stratovolcano ·Elevation: 3'374 m ·Last eruption: 1992 ·United States
  • Hayes
    Distance: 134 km ·Stratovolcano ·Elevation: 3'034 m ·Last eruption: 1200 ·United States
  • Redoubt
    Distance: 198 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: 284 km ·Tuff ring(s) ·Elevation: 830 m ·Last eruption: -1050 ·United States
  • Wrangell
    Distance: 311 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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