Back to map
United States

M1.9 Earthquake near 42 km S of Chignik, Alaska (United States)

UTC time: 2025-07-21 01:04:21 UTC Local time: —

Map

About this earthquake

On July 21, 2025 at 01:04 UTC, a magnitude M1.9 earthquake occurred near 42 km S of Chignik, Alaska (United States). With a focal depth of about 53 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: 156 earthquakes were recorded in the past 24 hours, the strongest reaching M3.3.

Details

ID
55dcf14dee214d51026fa2a5c4819d83edbf8596
Magnitude
M1.9
Depth
53.3 km
UTC time
2025-07-21 01:04:21 UTC
Local time
—
Country
United States
City
Alaska
Source
usgs
Coordinates
55.92070, -158.27910
Temperature
13.4°C

Depth profile

Depth profile Depth: 53.3 km (Shallow) Surface Shallow Intermediate Deep 0 km 70 km 300 km 700 km 53.3 km
Shallow
53.3 km
53.3 km — deeper than the regional average (15.2 km)
Regional average: 15.2 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

  • Veniaminof
    Distance: 74 km ·Stratovolcano ·Elevation: 2'507 m ·Last eruption: 2021 ·United States
  • Black Peak
    Distance: 77 km ·Stratovolcano ·Elevation: 1'032 m ·Last eruption: -1900 ·United States
  • Kupreanof
    Distance: 95 km ·Stratovolcano ·Elevation: 1'895 m ·United States
  • Aniakchak
    Distance: 107 km ·Caldera ·Elevation: 1'341 m ·Last eruption: 1931 ·United States
  • Stepovak Bay Group
    Distance: 108 km ·Volcanic field ·Elevation: 1'633 m ·United States
  • Yantarni
    Distance: 139 km ·Stratovolcano ·Elevation: 1'345 m ·Last eruption: -800 ·United States

Radius · 50 km

Nearby infrastructure

Up to 3 nearest sites per category

Airports

  • Chignik AirportUnited States · KCG · PAJC
    43.8 kmStraight-line distance
  • Chignik Lake AirportUnited States · KCQ · A79
    48.3 kmStraight-line distance

Source: OurAirports · Dataset date: 2026-11-05

This selection shows geographic proximity, not a hazard zone or confirmed impacts. Distances use recorded site coordinates. Sources & data dates

Alaska

Context for this earthquake

05 Oct 2025 – 05 Oct 2026 · M ≥ 2.0 · 4,148 Catalogue entries

Sufficiently reliable matching data are not currently available for a direct comparison. The area profile shows the available records and their limitations.

Open seismic profile

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.

Share