Back to map
M1.8 Depth: 51.1 km

M1.8 Earthquake near 33 km S of Port Graham, Alaska (United States)

UTC time: 2025-05-29 03:43:08 UTC Local time: —

About this earthquake

On May 29, 2025 at 03:43 UTC, a magnitude M1.8 earthquake occurred near 33 km S of Port Graham, Alaska (United States). With a focal depth of about 51 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 157 earthquakes, the strongest at M3.3.

Details

Magnitude
M1.8
Depth
51.1 km
UTC time
2025-05-29 03:43:08 UTC
Local time
—
Country
United States
City
Alaska
Source
usgs
Coordinates
59.05520, -151.91670
Temperature
9.0°C

Map

Depth profile

Depth profile Depth: 51.1 km (Shallow) Surface Shallow Intermediate Deep 0 km 70 km 300 km 700 km 51.1 km
Shallow
51.1 km
51.1 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

  • Augustine
    Distance: 93 km ·Lava dome(s) ·Elevation: 1'218 m ·Last eruption: 2006 ·United States
  • Douglas
    Distance: 96 km ·Stratovolcano ·Elevation: 2'140 m ·United States
  • Fourpeaked
    Distance: 106 km ·Stratovolcano ·Elevation: 2'105 m ·Last eruption: 2006 ·United States
  • Iliamna
    Distance: 127 km ·Stratovolcano ·Elevation: 3'053 m ·Last eruption: 1876 ·United States
  • Kaguyak
    Distance: 131 km ·Lava dome(s) ·Elevation: 901 m ·Last eruption: -3850 ·United States
  • Kukak
    Distance: 156 km ·Stratovolcano ·Elevation: 2'043 m ·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.

Share