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M5.8 Depth: 56.0 km

M5.8 Earthquake near Unorganized Borough, Alaska (United States)

UTC time: 2026-07-26 08:35:26 UTC Local time: —
M5.8 earthquake near Unorganized Borough on Jul 26, 2026 — map of epicenter and shaking intensity | QuakeMap24
M5.8 Earthquake near Unorganized Borough, Alaska (United States) · 2026-07-26 08:35:26 UTC

About this earthquake

On July 26, 2026 at 08:35 UTC, a magnitude M5.8 earthquake occurred near Unorganized Borough, Alaska (United States). With a focal depth of about 56 km, this was a shallow earthquake, whose shaking is usually felt more strongly at the surface. Events of this size can cause damage near the epicenter.

The event was recorded by EMSC. United States: 183 earthquakes were recorded in the past 24 hours, the strongest reaching M5.8.

Map

Depth profile

Depth profile Depth: 56 km (Shallow) Surface Shallow Intermediate Deep 0 km 70 km 300 km 700 km 56 km
Shallow
56 km
56 km — deeper than the regional average (15.6 km)
Regional average: 15.6 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

Estimated impact

Green No or minimal impact expected.

Ground shaking

IV
Light · Intensity (MMI) IV
Felt by many, no damage.

Tectonic context

Located on the North America Plate.
Near the boundary North America ↔ Pacific · about 118 km away

Volcanoes nearby

  • Atka Volcanic Complex
    Distance: 52 km ·Stratovolcano(es) ·Elevation: 1'518 m ·Last eruption: 2025 ·United States
  • Seguam
    Distance: 82 km ·Stratovolcano(es) ·Elevation: 1'054 m ·Last eruption: 1993 ·United States
  • Koniuji
    Distance: 107 km ·Stratovolcano ·Elevation: 273 m ·Last eruption: -1150 ·United States
  • Kasatochi
    Distance: 132 km ·Stratovolcano ·Elevation: 314 m ·Last eruption: 2008 ·United States
  • Amukta
    Distance: 169 km ·Stratovolcano ·Elevation: 1'066 m ·Last eruption: 1996 ·United States
  • Great Sitkin WATCH · ORANGE
    Distance: 173 km ·Stratovolcano ·Elevation: 1'740 m ·Last eruption: 2026 ·United States

Historical context nearby

Comparison with recorded earthquakes before this event within 150 km.

Magnitude rank#2
Earlier events M≥466
Earlier events M≥521
Compared since2025-01-13

The QuakeMap24 comparison dataset begins on 2024-03-23. Earlier earthquakes may not be included.

Strongest earlier events

M6.22025-09-03 20:57:41 UTC125.7 km87 km SW of Nikolski, Alaska M5.82026-07-26 08:35:20 UTC69.0 km105 km SSE of Atka, Alaska M5.62026-05-22 12:16:14 UTC140.2 km###.# km ( ###.# mi) NW (az= 304.0) from Port Orford, OR M5.62026-05-22 12:16:13 UTC126.1 kmFox Islands, Aleutian Islands M5.62026-05-22 12:16:13 UTC135.6 kmFOX ISLANDS, ALEUTIAN ISLANDS

Historic earthquake map · United States

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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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