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United States · Alaska

M6.4 Earthquake near Aleutians East Borough, Alaska (United States)

UTC time: 2025-07-16 20:37:43 UTC Local time: —
Earthquake newsQuakeMap24
Archive record · original publication time was not recorded

Automatically generated from measurement data by QuakeMap24. Values may change after further analysis.

Magnitude
M6.4
Depth
40.0 km
Source
USP

Alaska · Aleutians East Borough

Country overview

Map

M6.4 Earthquake near Aleutians East Borough, Alaska (United States) · 2025-07-16 — Map showing the location of the epicenter
M6.4 Earthquake near Aleutians East Borough, Alaska (United States) · 2025-07-16 — Map showing the location of the epicenter

About this earthquake

On July 16, 2025 at 20:37 UTC, a magnitude M6.4 earthquake occurred near Aleutians East Borough, Alaska (United States). The hypocenter lay relatively close to the surface at around 40 km, increasing how strongly it was felt. Earthquakes of this magnitude can cause significant damage in populated areas.

The data is provided by USP and cross-checked across seismological networks. United States: 148 earthquakes were recorded in the past 24 hours, the strongest reaching M5.3.

Depth profile

Depth profile Depth: 40 km (Shallow) Surface Shallow Intermediate Deep 0 km 70 km 300 km 700 km 40 km
Shallow
40 km
40 km — deeper 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

Nearby population centers

Distances are straight-line distances from the epicenter. Population data: GeoNames.

PlaceDistanceDirectionPopulation
Anchorage877.9 kmNE289'600

GeoNames · CC BY 4.0

Volcanoes nearby

  • Stepovak Bay Group
    Distance: 54 km ·Volcanic field ·Elevation: 1'633 m ·United States
  • Dana
    Distance: 66 km ·Stratovolcano ·Elevation: 1'354 m ·Last eruption: -1890 ·United States
  • Kupreanof
    Distance: 68 km ·Stratovolcano ·Elevation: 1'895 m ·United States
  • Veniaminof
    Distance: 96 km ·Stratovolcano ·Elevation: 2'507 m ·Last eruption: 2021 ·United States
  • Pavlof Sister
    Distance: 103 km ·Stratovolcano ·Elevation: 2'142 m ·United States
  • Pavlof
    Distance: 106 km ·Stratovolcano ·Elevation: 2'493 m ·Last eruption: 2022 ·United States

Radius · 100 km

Nearby infrastructure

Up to 3 nearest sites per category

Airports

  • Sand Point AirportUnited States · SDP · PASD
    24.5 kmStraight-line distance
  • Perryville AirportUnited States · KPV · PAPE
    83.5 kmStraight-line distance
  • Nelson Lagoon AirportUnited States · NLG · PAOU
    85.8 kmStraight-line distance

Source: OurAirports · Dataset date: 2026-10-05

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

Subsequent earthquakes nearby

Events recorded after this earthquake within 250 km. They are not automatically classified as aftershocks.

First 6 hours38
First 24 hours64
First 72 hours77
Strongest subsequent eventM6.2
M4.22025-07-16 20:45:23 UTC99.7 km89 km SSE of Sand Point, Alaska M4.32025-07-16 20:45:23 UTC96.0 kmALASKA PENINSULA M3.72025-07-16 20:48:52 UTC101.1 kmALASKA PENINSULA M3.52025-07-16 20:56:01 UTC95.6 kmALASKA PENINSULA M4.12025-07-16 21:10:02 UTC108.7 km95 km S of Sand Point, Alaska M4.12025-07-16 21:10:40 UTC100.8 kmALASKA PENINSULA M3.82025-07-16 21:25:25 UTC103.4 kmSOUTH OF ALASKA M3.32025-07-16 21:33:58 UTC101.4 kmSOUTH OF ALASKA M4.22025-07-16 21:39:30 UTC98.1 kmALASKA PENINSULA M3.72025-07-16 21:42:53 UTC95.7 kmSOUTH OF ALASKA M4.42025-07-16 21:50:08 UTC110.4 km102 km SSE of Sand Point, Alaska M4.02025-07-16 21:50:11 UTC96.7 kmALASKA PENINSULA

Alaska

Context for this earthquake

05 Oct 2025 – 05 Oct 2026 · M ≥ 3.0 · 653 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

Historical context nearby

Comparison with recorded earthquakes before this event within 250 km.

Magnitude rank#5
Earlier events M≥426
Earlier events M≥57
Compared since2025-01-17

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

Strongest earlier events

M7.32025-07-16 20:37:39 UTC101.4 km2025 Sand Point, Alaska Earthquake M7.32025-07-16 20:37:39 UTC81.6 kmALASKA PENINSULA M7.22025-07-16 20:37:40 UTC99.9 km87 km S of Sand Point, Alaska M7.12025-07-16 20:37:41 UTC101.4 km2025 Sand Point, Alaska Earthquake M5.42025-05-17 15:09:27 UTC145.9 km138 km SSE of Sand Point, Alaska

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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