Earthquakes in Alaska, United States today – live map

This page summarizes earthquakes in Alaska (United States). The most recently recorded event was a magnitude M1.5 earthquake near Matanuska-Susitna Borough on 2026-10-30 12:10:46 UTC. All event lists and map markers are limited to the last 30 days.

Seismic profile â†“

Earthquakes (last 30 days)

1452

Max magnitude (last 30 days)

M5.8

Avg magnitude (last 30 days)

M1.73

Avg depth (last 30 days)

41 km

Seismic profile

Analysis period05 Oct 2025 – 05 Oct 2026Data as of: 05 Oct 2026 · 16:00 UTC

Minimum magnitude

What the data show

Alaska · M ≥ 4.5

After source reconciliation, the catalogue contains 61 event entries of M4.5 or above for this area and period, spread over 42 days.

Catalogue entries6105 Oct 2025 – 05 Oct 2026

Strongest recorded earthquakeM6.4Unorganized Borough ↗

Depth · median10.0 km61 events with valid depth

Last 30 days3Previous 30 days: 7

These figures describe the stored catalogue. Recording, magnitude types and geographic attribution may vary by source and period; completeness has not been established.

05 Oct 2025 – 05 Oct 2026

Earthquakes by month

M ≥ 4.5

Each bar counts events within the selected period. Hatched months are only partially included.

Oct2025

Nov2025

Dec2025

Jan2026

Feb2026

Mar2026

Apr2026

May2026

Jun2026

Jul2026

Aug2026

Sep2026

Oct2026

View data table

Month	Analysis period	Catalogue entries
October 2025 · Partial month	05 Oct 2025 – 31 Oct 2025	0
November 2025	01 Nov 2025 – 30 Nov 2025	0
December 2025	01 Dec 2025 – 31 Dec 2025	0
January 2026	01 Jan 2026 – 31 Jan 2026	10
February 2026	01 Feb 2026 – 28 Feb 2026	13
March 2026	01 Mar 2026 – 31 Mar 2026	0
April 2026	01 Apr 2026 – 30 Apr 2026	8
May 2026	01 May 2026 – 31 May 2026	8
June 2026	01 Jun 2026 – 30 Jun 2026	5
July 2026	01 Jul 2026 – 31 Jul 2026	7
August 2026	01 Aug 2026 – 31 Aug 2026	4
September 2026	01 Sep 2026 – 30 Sep 2026	5
October 2026 · Partial month	01 Oct 2026 – 05 Oct 2026	1

How strong were the earthquakes?

Catalogue entries · 61

M 4.5 – < 5.031

M 5.0 – < 6.028

M ≥ 6.02

At what depth did they occur?

61 events with valid depth

0 – < 30 km35

30 – < 70 km16

70 – < 300 km10

300 – 750 km0

0 events without valid depth are excluded here.

Depth · median

Half of the available values lie on either side of the median; ties are possible.

Current period in context

Last 30 days3

Previous 30 days7

Median of the eleven previous 30-day periods6

Same magnitude threshold, separate periods. Differences may also reflect changes in recording. No hazard level or forecast is inferred.

Where were earthquakes recorded?

Events assigned to Alaska in the stored location data are analysed. This is not a radius search. Missing or different attributions are excluded.

The interactive map complements the event links on this page.

Marker size and colour indicate magnitude.

Strongest recorded earthquake

05 Oct 2025 – 05 Oct 2026 · M ≥ 4.5

M6.4

Unorganized Borough

17 Sep 2026 · 14:19 UTC

Depth: 114.8 km · USGS

View event ↗

M6.1

Alaska

23 Feb 2026 · 05:11 UTC

Depth: 10.0 km · GFZ

View event ↗

M5.9

Alaska

03 Sep 2026 · 11:17 UTC

Depth: 10.0 km · EMSC

View event ↗

Data and methodology

Analysis period: 05 Oct 2025 16:00 – 05 Oct 2026 16:00 UTC

Data and methodology

Reports are first reconciled using existing event associations. Additional reports from different sources are consolidated only when every pair is within 5 seconds, 10 km and 0.5 magnitude units, source groups do not overlap and exactly one group matches. Ambiguous cases remain separate. The preferred report determines magnitude, time and area; period and magnitude filters are applied afterwards. The start is included and the end excluded (UTC).

4 additional source reports were consolidated during source reconciliation.

Events assigned to Alaska in the stored location data are analysed. This is not a radius search. Missing or different attributions are excluded.

These figures describe the stored catalogue. Recording, magnitude types and geographic attribution may vary by source and period; completeness has not been established.

Source reports used

The preferred report of each group is counted. Source priority follows the earthquake list. Different magnitude types and recording gaps limit comparability.

USGS19
GFZ17
EMSC10
SERBIA_RSZ6
RESIF5
ISC2
NNSN1
USP1

The profile is recalculated hourly from the earthquake catalogue. Later source revisions may also change historical values.

Data as of: 05 Oct 2026 · 16:32 UTC

Map (last 30 days)

< 2 2–4 4–5 ≥ 5

About Alaska

Alaska is a U.S. state located in the northwestern regions of North America. Part of the Western United States region, it is one of the two non-contiguous U.S. states, alongside Hawaii.

Seismic activity in 2026

In 2026, Alaska recorded 9807 earthquakes within United States. The average magnitude was M1.82. The strongest event reached M6.5.

Based on the number of recorded earthquakes in 2026, Alaska is currently among the Top 5 most active regions in United States (rank #2 by count).

Considering the strongest recorded event in 2026, Alaska is among the Top 5 strongest regions in United States (rank #1 by max magnitude).

Located on the North America Plate.

Earthquakes in Alaska (last 30 days)

M1.5

Matanuska-Susitna Borough

2026-10-30 · 12:10 UTC · 17 km

›

M2.6

North Slope Borough

2026-10-30 · 10:05 UTC · 1 km

›