The Last Frontier is a land of extremes, with towering mountains, vast glaciers, and a landscape that is literally constantly on the move. Many people often associate Alaska with the extreme, record-setting magnitude tremors like that of the historic 1964 Good Friday earthquake. However, Alaska is beset with thousands of quakes each year, most of which often go unnoticed by its residents.   

This “perpetually shaking” atmosphere is a fact of life in Alaska. That is, the ground beneath the state is rarely still and accounts for around 11% of all recorded earthquakes worldwide. It is the most seismically active region in the United States. 

In recent years, the state has experienced a series of tremors that have tested the resilience of its residents and have also led to a groundbreaking scientific discovery. 

A Timeline of Recent Earthquakes in Alaska & Their Significance

Reported seismic activity in the Last Frontier over the last five years has gone beyond the 220,000 mark. In the first quarter of 2026 alone, reported earthquakes have already reached 10,000, whereas in 2025, the total was 31,096 quakes. 

Of the five-year figure, 26 were magnitude 6 or higher and three were at least magnitude 7. This isn’t surprising given that 75% of all earthquakes in the country with magnitude 6 and above occur in the state. In fact, according to the Alaska Division of Geological & Geophysical Surveys, the state experiences six magnitude 6-7 quakes annually, one magnitude 7-8 tremor every two years, and one magnitude 8+ earthquake once in 13 years, on average. 

With a tremor every 15 minutes, on average, seismologists at the Alaska Earthquake Center have been kept busy by quakes. Here are some of the more significant ones.

2026: Activity in the Remote West

In the morning of March 4, the western Aleutian Islands was rocked by a magnitude 6.4 earthquake. Alaskans did not feel it nor were there any landslides, tsunami, or damage. However, there are three reasons why this tremor was deemed significant by seismologists at the Alaska Earthquake Center:

• Fault motion

The earthquake was shallow. It occurred within around the upper 25 miles of the Earth’s crust with the epicenter located around 42 miles south of Buldir Island. In other words, it occurred near the Alaska-Aleutian megathrust. However, instead of the typical behavior of tremors in the area, i.e., the Pacific Plate normally dives beneath the North American Plate, the earthquake showed a strike-slip motion. This is when blocks of the crust horizontally pass one another, which is a behavior typical of quakes along the Denali Fault.  

• Foreshocks

This particular earthquake was preceded by three magnitude 5 tremors, which were part of a string of quakes which occurred since March 1. In total, the Alaska Earthquake Center recorded 48 quakes in this remote stretch of the Aleutians, including 28 magnitude 4 earthquakes and five magnitude 5 tremors. Seismologists at the center believe there were many more smaller ones that the radar of the nearest stations missed. 

The pattern is of note: Several magnitude 5 quakes occurred before the magnitude 6.4 earthquake. The typical pattern is the large quake comes first followed by the smaller aftershocks, but this event suggests that the former M5 tremors may have been foreshocks, followed by the larger M6.4 mainshock, with aftershocks that “continue today.”  

• Remotest Part in the Aleutians 

Buldir Island, sitting between the Rat Islands and the Near Islands, is described as being “farther from the nearest land than any other Aleutian island.” In other words, the earthquake’s epicenter was one of the most isolated islands of the island chain. 

The tiny, uninhabited island is around 100 miles away from the closest stations, in particular, Shemya Island and Little Sitkin Island. As a result, only tremors of roughly magnitude 4.0 can be confidently detected and smaller ones are either difficult to precisely locate or never make it to the records. 

2025: Breaking New Ground

On New Year’s eve and day, Alaskans ended and welcomed the new year with a jolt, thanks to several earthquakes that were part of a series of aftershocks of a magnitude 7.0 earthquake. This huge quake struck near Hubbard Glacier, around 60 miles north of Yakutat, on Dec. 6, 2025. 

Here are the reasons why it’s significant: 

• One of the largest earthquakes in the last 100 years

It is one of the largest recorded earthquakes in the U.S. since seismologists began tracking quakes around 100 years ago, said Nick Ackerley, a seismologist with the Canadian Hazards Information Service of Natural Resources Canada.  

• Confirms the existence of the Connector Fault  

This earthquake was considered to be a major scientific victory. The epicenter was located between the Totschunda Fault in Alaska and the Fairweather Fault in Canada. The Alaska Earthquake Center notes that the section which ruptured is called the Connector Fault, as it links the two major fault systems. After decades of theorizing, scientists finally see activity in the area. 

• A reminder that Alaska is seismologically active

The M7 earthquake is just one in the list of seismic activity that seemed to fill the year, a reminder that Alaskans live among an array of active faults. It followed a magnitude 6 quake near Susitna on Thanksgiving Day and the magnitude 7.3 quake in Sand Point in July.

2024: The Year of the Swarms

The Alaska Earthquake Center describes the year 2024 as a “quiet” year made interesting by several earthquake swarms.

The U.S. Geological Survey explains that a swarm is typically used to refer to the relatively many earthquakes within a relatively small area which don’t fit the pattern of a mainshock-aftershock sequence. According to the Alaska Earthquake Center, it is a cluster of several earthquakes of about the same magnitude. 

The biggest highlight is the Adak Swarm. Triggered by a magnitude 6.3 earthquake southwest of Atka Island in the western Aleutians, it consisted of a series of around 350 events ranging from M2.0 to M5.8. It also included another magnitude 6.3 quake and a M6.1 quake.

First of all, a swarm of large-magnitude is uncommon. Secondly, each of the M>6 events had aftershocks. And, finally, the combination of the large-magnitude events (M>6 and M5.0-5.8) released much more energy than the M>6 events alone.