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M5.4 Earthquake near 48 km ESE of Fox River, Alaska (United States)

UTC time: 2025-10-30 17:33:15 UTC Local time: —
Earthquake newsQuakeMap24
Archive record · original publication time was not recorded Content updated:

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

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M5.4 Earthquake near 48 km ESE of Fox River, Alaska (United States) · 2025-10-30 — Map showing the location of the epicenter
M5.4 Earthquake near 48 km ESE of Fox River, Alaska (United States) · 2025-10-30 — Map showing the location of the epicenter

About this earthquake

On October 30, 2025 at 17:33 UTC, a magnitude M5.4 earthquake occurred near 48 km ESE of Fox River, Alaska (United States). With a focal depth of about 24 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 data is provided by USGS and cross-checked across seismological networks. United States: over the past 24 hours, QuakeMap24 logged 187 earthquakes, the strongest at M4.0.

Details

ID
b08ecf573523e299cfb9afaa823c3b79fa5e48ba
Magnitude
M5.4
Depth
23.6 km
UTC time
2025-10-30 17:33:15 UTC
Local time
—
Country
United States
City
Alaska
Source
usgs
Coordinates
59.63080, -150.23280
Temperature
6.7°C

Depth profile

Depth profile Depth: 23.6 km (Shallow) Surface Shallow Intermediate Deep 0 km 70 km 300 km 700 km 23.6 km
Shallow
23.6 km
23.6 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

Official USGS aftershock forecast

Probability of at least one aftershock at or above the specified magnitude during the entire stated time window. This does not predict an individual earthquake.

Issued: Sep 17, 2026, 5:33 PM UTC · Last checked: Sep 22, 2026, 10:22 PM UTC

Sep 17, 2026, 6:00 PM UTC – Sep 18, 2026, 6:00 PM UTC · Expired
MagnitudeProbability ≥ 1Count (95% interval)
M ≥ 3.00.18 %0–0
M ≥ 4.00.02 %0–0
M ≥ 5.0< 0.01 %0–0
M ≥ 6.0< 0.01 %0–0
M ≥ 7.0< 0.01 %0–0
Sep 17, 2026, 6:00 PM UTC – Sep 24, 2026, 6:00 PM UTC
MagnitudeProbability ≥ 1Count (95% interval)
M ≥ 3.01.27 %0–0
M ≥ 4.00.13 %0–0
M ≥ 5.00.01 %0–0
M ≥ 6.0< 0.01 %0–0
M ≥ 7.0< 0.01 %0–0
Sep 17, 2026, 6:00 PM UTC – Oct 17, 2026, 6:00 PM UTC
MagnitudeProbability ≥ 1Count (95% interval)
M ≥ 3.05.11 %0–1
M ≥ 4.00.53 %0–0
M ≥ 5.00.05 %0–0
M ≥ 6.0< 0.01 %0–0
M ≥ 7.0< 0.01 %0–0
Sep 17, 2026, 6:00 PM UTC – Sep 17, 2027, 6:00 PM UTC
MagnitudeProbability ≥ 1Count (95% interval)
M ≥ 3.033.66 %0–3
M ≥ 4.04.66 %0–1
M ≥ 5.00.48 %0–0
M ≥ 6.00.05 %0–0
M ≥ 7.0< 0.01 %0–0

The range is the 95% forecast interval for the number of earthquakes. Magnitude thresholds and time windows overlap: do not add the values. Windows already in progress still refer to the entire stated period.

Source: USGS — Operational Aftershock Forecast

Nearby population centers

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

PlaceDistanceDirectionPopulation
Anchorage177.4 kmN289'600

GeoNames · CC BY 4.0

Volcanoes nearby

  • Iliamna
    Distance: 166 km ·Stratovolcano ·Elevation: 3'053 m ·Last eruption: 1876 ·United States
  • Redoubt
    Distance: 169 km ·Stratovolcano ·Elevation: 3'108 m ·Last eruption: 2009 ·United States
  • Augustine
    Distance: 183 km ·Lava dome(s) ·Elevation: 1'218 m ·Last eruption: 2006 ·United States
  • Douglas
    Distance: 207 km ·Stratovolcano ·Elevation: 2'140 m ·United States
  • Spurr
    Distance: 216 km ·Stratovolcano ·Elevation: 3'374 m ·Last eruption: 1992 ·United States
  • Fourpeaked
    Distance: 218 km ·Stratovolcano ·Elevation: 2'105 m ·Last eruption: 2006 ·United States

Radius · 100 km

Nearby infrastructure

Up to 3 nearest sites per category

Airports

  • Homer AirportUnited States · HOM · PAHO
    70.1 kmStraight-line distance
  • Seldovia AirportUnited States · SOV · PASO
    85.6 kmStraight-line distance
  • Port Graham AirportUnited States · PGM · PGM
    95.5 kmStraight-line distance

Source: OurAirports · Dataset date: 2026-09-22

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 150 km. They are not automatically classified as aftershocks.

First 6 hours2
First 24 hours6
First 72 hours29
Strongest subsequent eventM4.2
M2.62025-10-30 17:38:56 UTC4.1 kmKenai Peninsula M2.02025-10-30 19:15:03 UTC6.0 km54 km ESE of Fox River, Alaska M3.12025-10-31 09:37:13 UTC9.2 km39 km SE of Fox River, Alaska M3.12025-10-31 09:37:13 UTC4.4 kmKENAI PENINSULA, ALASKA M2.42025-10-31 15:53:37 UTC120.3 kmKENAI PENINSULA, ALASKA M2.42025-10-31 15:53:38 UTC124.8 km28 km SW of Hope, Alaska M3.32025-10-31 18:26:01 UTC5.0 kmKenai Peninsula M3.22025-10-31 18:26:02 UTC5.6 km42 km ESE of Fox River, Alaska M2.02025-10-31 23:00:29 UTC104.2 km5 km ENE of Kalifornsky, Alaska M2.42025-10-31 23:49:35 UTC91.8 km10 km SE of Funny River, Alaska M2.02025-10-31 23:54:52 UTC95.8 km6 km SE of Funny River, Alaska M2.22025-11-01 00:02:40 UTC88.9 km8 km ENE of Ninilchik, Alaska

Alaska

Context for this earthquake

22 Sep 2025 – 22 Sep 2026 · M ≥ 3.0 · 655 Catalogue entries

Of 654 other entries for this area and period, 21 have a higher stored magnitude. Different magnitude types and reports not yet merged limit the comparison.

Open seismic profile

Historical context nearby

Comparison with recorded earthquakes before this event within 150 km.

Magnitude rank#3
Earlier events M≥419
Earlier events M≥55
Compared since2025-04-26

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

Strongest earlier events

M5.72025-10-30 17:33:10 UTC18.9 kmKenai Peninsula, Alaska M5.62025-10-30 17:33:08 UTC33.8 kmKenai Peninsula, Alaska M5.42025-10-30 17:33:14 UTC3.7 kmKENAI PENINSULA, ALASKA M5.42025-10-30 17:33:13 UTC17.9 kmKenai Peninsula M5.42025-10-30 17:33:10 UTC15.5 kmEvent of magnitude 5.4, near of Anchorage (Monde)

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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