M1.9 Depth: 6.5 km

M1.9 Earthquake near 78 km WNW of Tyonek, Alaska (United States)

UTC time: 2025-07-28 19:44:02 UTC Local time: —

About this earthquake

On July 28, 2025 at 19:44 UTC, a magnitude M1.9 earthquake occurred near 78 km WNW of Tyonek, Alaska (United States). With a focal depth of about 7 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: 257 earthquakes were recorded in the past 24 hours, the strongest reaching M4.1.

Details

Magnitude

M1.9

Depth

6.5 km

UTC time

2025-07-28 19:44:02 UTC

Local time

—

Country

United States

City

Alaska

Source

usgs

Coordinates

61.31010, -152.51700

Temperature

5.2°C

Map

Depth profile

Shallow

6.5 km

6.5 km — shallower than the regional average (15.3 km)

Regional average: 15.3 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: 14 km ·Stratovolcano ·Elevation: 3'374 m ·Last eruption: 1992 ·United States
Hayes

Distance: 37 km ·Stratovolcano ·Elevation: 3'034 m ·Last eruption: 1200 ·United States
Redoubt

Distance: 93 km ·Stratovolcano ·Elevation: 3'108 m ·Last eruption: 2009 ·United States
Iliamna

Distance: 146 km ·Stratovolcano ·Elevation: 3'053 m ·Last eruption: 1876 ·United States
Augustine

Distance: 222 km ·Lava dome(s) ·Elevation: 1'218 m ·Last eruption: 2006 ·United States
Douglas

Distance: 279 km ·Stratovolcano ·Elevation: 2'140 m ·United States

Historic earthquake map · United States

Open history map

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Country statistics · United States

Country overview

View earthquake KPIs, strongest and latest events, and averages for this country.

Stats (last 24h)

Global (24h)

637

Country (24h)