Aerial view of the Columbia Glacier region with labeled areas including Main Branch, West Branch, Rocky Outcrop, Great Nunatak, and Heather Island. Snow-capped mountains and greenery are visible. The image includes a scale showing 5 kilometers.

This image consists of two diagrams labeled "a" and "b." Both diagrams illustrate phases of glacier activity from a side view. In "a," the terminus of the glacier is floating in water, with labeled "Buoyancy" forces on the immersed terminus. Diagram "b" shows a glacier terminus supported by land, with a piece of glacier calving into the water, creating labeled "Pressure waves" and "Seismic waves" depicted with lines and arrows.

Glaciers can't talk,💬 but PhD student Sebin John's recently published research shows how the seismic record at Columbia Glacier tells the story of the glacier's retreat over past decades, with insights that could be useful for other tidewater glaciers in Alaska! https://bit.ly/4mJPqMC

Pelican M3.7 | Alaska Earthquake Center Alaskan Earthquake Center

We have reviewed a magnitude 3.7 event that occurred at 02:04 PM AK time. This event was located 16 miles WSW of Pelican and 6 miles deep.

Weak shaking from this event was reported felt in Juneau and Douglas.

For more information, please visit
https://earthquake.alaska.edu/event/aka2026hogxjn

AEC Director Mike West and co-authors presented this week at the Seismological Society of America annual meeting on a lesser-known part of the seismic signal called the coda. Exploring 200 earthquakes, the coda info allowed them to determine how stress varies across tectonically complex Alaska.

Sebin just defended his PhD in Geophysics at UAF, and the research he is presenting this week at the Seismological Society of America meeting is only about a third of what he studied! He looked at all of the tiny earthquakes that led up to last summer's Tracy Arm Landslide.

The title is “What's Shaking Alaska?!” and the text reads “Week of April 8-15, 2026”. A map of Alaska in the background shows dots where earthquakes occurred. Other other text reads “About 600 earthquakes were detected, and 4 earthquakes were reported felt. The largest earthquake was a magnitude 5.3 on April 12, south of King Cove.”

What’s Shaking Alaska?! Seven Earthquake Center scientists are presenting their research this week in Pasadena, California at the annual Seismological Society of America conference. Listen to more about the variety of our research https://bit.ly/428LThd

What better way to talk about Gen3 than with GenZ (speak)? AEC's Austin Holland is at the Seismological Society of America annual meeting to describe our transition to a new computing platform for seismic analysis, and how it helps set the foundation for earthquake early warning.

PhD student Cade Quigley is presenting this week at the Seismological Society of America conference on results from his experimental setups to capture large offshore earthquakes. This work tests how cutting-edge approaches to fast earthquake detection can fit into an earthquake early warning system.

This week at the annual Seismological Society of America meeting, several of our researchers are presenting from across the spectrum of seismology, with an Alaska focus. Derreck Gossett helped build a new magnitude scale for Alaska seismic events. And YES, there's more than one magnitude scale!🙀

This infographic contains text about seismic arrays for earthquake early warning in Alaska. It includes a map with seismic activity marked, and a photo of PhD student Cade Quigley in the top left corner. The title is "Designing seismic arrays for offshore Earthquake Early Warning applications: insights from coastal deployments in Alaska". A caption at the bottom describes research on seismic sensors in coastal Alaska for detecting large offshore earthquakes. The Alaska Earthquake Center logo is in the upper right corner.

And one more Earthquake Center presentation at the Seismological Society of America 2026 conference this week!

Logo of Alaska Earthquake Center with concentric colorful circles and a seismic wave pattern. Text reads: "Making Waves at Seismological Society of America 2026."

Infographic announcing that Alaska Earthquake Center scientists will present their work at the Seismological Society of America 2026 and lists the event details: Pasadena, California, April 14-18. It mentions activities like monitoring earthquakes and testing new monitoring methods.

An infographic from the Alaska Earthquake Center. It features a photo of Michael West, director, and a diagram showing earthquake coda waveforms with labeled points P, S, and coda. Text reads: 'Coda-Derived Source Parameters of Shallow Earthquakes in Mainland Alaska.' A paragraph explains the process of using coda waveforms to assess earthquake magnitudes and apparent tectonic stress across mainland Alaska.

This infographic from the Alaska Earthquake Center about their Generation 3 real-time system, featuring a network diagram. The slide includes a photo of Austin Holland, the Director of Operations. Text describes advancements in seismic data processing capabilities. The diagram outlines the stages: onsite, offsite, and dev‑staging, with steps like "gather," "assess," and "distribute."

7 of our scientists and students flew down ✈️ to the wilds of Pasadena, California to present Earthquake Center seismic research at the 2026 Seismological Society of America conference. 🤩 Stay tuned for updates throughout the week!

It was a busy weekend day for the University of Alaska Fairbanks Science Potpourri -- teaching kids (and their parents!) about earthquakes, how different buildings shake differently, and how accelerometers capture vibrations in three directions.

King Cove M5.3 | Alaska Earthquake Center Alaskan Earthquake Center

There was a magnitude 5.3 earthquake just after noon today, south of King Cove. It was about 15 miles deep, and has not yet been reported felt. If you're interested in more information or would like to report that you felt it, visit the event page: https://earthquake.alaska.edu/event/aka2026heypei

Seismic station CHI. Yellow cylinder in lower left holds the seismometer, hut with solar panels on right. Person next to red helicopter in mid-ground, ocean under cloudy sky in background.

What does the field team do out in the field? This new web story looks back at highlights from 2025, setting the stage for the coming summer as our team hits the ground! 🚁 🥾 https://bit.ly/4t7KHqq

You can learn more about how this network recorded shaking from the 2018 Anchorage earthquake: bit.ly/4tZKKor

It also means that half the work in a campaign like this is the coordination! Strong-motion sensors, as their name suggests, record strong shaking from earthquakes. Ground acceleration, speed, and displacement measurements are used by engineers to design earthquake-safe buildings.

Happy #FieldWorkFriday! Our intrepid field engineer Shah Khan spent all last week visiting and repairing 15 strong-motion sites in the Anchorage area. These sensors are often housed in schools, churches, and fire stations, and we cherish these partnerships.

Pelican M3.9 | Alaska Earthquake Center April 10, 2026 08:43:16 AKDT (April 10, 2026 16:43:16 UTC)

A magnitude 3.9 earthquake near Pelican at 8:43 am was reported felt in Sitka, Juneau, Douglas, and Elfin Cove. Check out the details and tell us what you felt here: https://earthquake.alaska.edu/event/aka2026hbadrs

The title is What's Shaking Alaska?! Week of April 1-8, 2026. A map of Alaska in the background shows dots where earthquakes occurred. About 600 earthquakes were detected, and 3 earthquakes were reported felt. The largest was a magnitude 4.9 earthquake on April 3 in the western Aleutians.

We pay tribute this week to the life and works of George Plafker, a geoscientist integral to understanding Alaska’s earthquake hazards, who passed a week ago. This week's audio shares some of his many accomplishments the Earthquake Center is thankful for: https://bit.ly/3OhcnK6

George Plafker, a geologist and seismologist integral to understanding the 1964 Great Alaska Earthquake and how it redefined plate boundary dynamics, passed away this weekend. Plafker won many notable awards for his contribution to the field, and is immortalized in this book.

Skwentna M3.6 | Alaska Earthquake Center Alaskan Earthquake Center

We have reviewed a magnitude 3.6 event that occurred at 03:46 AM AK time, 4/7/2026. This event was located 26 miles N of Skwentna and 53 miles deep.
This event was reported felt in Talkeetna and Eagle River.

For more information, please visit
https://earthquake.alaska.edu/event/aka2026gvddoy

2025 Seismicity Year in Review | Alaska Earthquake Center As we slide into spring here in Alaska, memories of last year’s earthquakes and other remarkable seismic events are probably fading fast.

2025 was notable in Alaska's seismic landscape: a mega-landslide, two earthquakes above magnitude 7, a couple of small tsunamis, and magnitude 5 and 6 earthquakes that kept us on our toes. Check out our home page for a look back at 2025, and an overview of the past decade. https://bit.ly/3PKiN58

Kialagvik Creek M4.0 | Alaska Earthquake Center Alaskan Earthquake Center

ML 4.0 in Alaska Peninsula

We have reviewed a magnitude 4.0 event that occurred at 06:27 PM AK time. This event was located 51 miles W of Akhiok and 3 miles deep.
No felt reports have been received at this time.

For more information, please visit
https://earthquake.alaska.edu/event/aka2026goxlpw

When you picture seismic waves being measured, do you envision a large rotating drum of paper with a scrawling pen 〰️? Those haven't been used for decades! This short video shows the various types of seismometers we set up at our stations across the state.

Buldir Is M4.9 | Alaska Earthquake Center Alaskan Earthquake Center

2026-04-03T08:22:08 UTC, ML 4.9 in Rat Islands

We have reviewed a magnitude 4.9 event that occurred at 12:22 AM AK time. This event was located 146 miles ESE of Attu Station and 4 miles deep.
No felt reports have been received yet.

More information
https://earthquake.alaska.edu/event/aka2026gnnlzb

The title is What's Shaking Alaska?! Week of March 25-April 1, 2026. A map of Alaska in the background shows dots where earthquakes occurred. About 720 earthquakes were detected, and 3 earthquakes were reported felt. The largest earthquakes were two magnitude 4.5 events, one on March 25 near Sand Point and one in the western Aleutian Islands.

This week's radio episode feature how Alaska is now one step closer to Earthquake Early Warning! Listen to this update on recent funding from Congress that will help us begin taking the initial steps of a multi-year effort. https://bit.ly/4c4MtRZ

Icy Bay M3.9 | Alaska Earthquake Center Alaskan Earthquake Center

2026-04-02T02:48:43 UTC, ML 3.9 in Gulf of Alaska

We have reviewed a magnitude 3.9 event that occurred at 06:48 PM AK time. This event was located 153 miles SW of Yakutat and 3 miles deep.
No felt reports have been received.

For more information,
https://earthquake.alaska.edu/event/aka2026glgrqx

Background is map of Alaska with dots showing seismic stations. Text says Trivia Tuesday. Thank you for playing Trivia Tuesday this season! Time to switch to Fieldwork Fridays...

Group of Earthquake Center stickers and magnets of different types, and two pint glasses.

We have a Trivia Tuesday winner! Congratulations to Eric T Olsen! 🎉Thank you to everyone who participated in Trivia Tuesday this season, there were some great comments and discussions. Next, on to Fieldwork Fridays as our intrepid field team kicks off a new season! 🚁

Anchor Point M4.1 | Alaska Earthquake Center Alaskan Earthquake Center

Good morning, Alaska!

We have reviewed a magnitude 4.1 event that occurred at 07:44 AM AK time. This event was located 29 miles WNW of Homer and 50 miles deep.

This event was felt in Homer.

For more information, please visit:
https://earthquake.alaska.edu/event/aka2026gioyfa

The Alaska Earthquake Center is one of 12 Regional Seismic Networks of the Advanced National Seismic System (ANSS). Check out the ANSS 2025 StoryMap—Alaska features two of the four notable earthquakes (skip to "Notable Events" in the menu banner near the top): https://bit.ly/48g8a00

This Friday is the anniversary of the 1964 Great Alaska Earthquake. In our What's Shaking episode this week, we talk about the recently discovered "ghost" tsunami in the Upper Cook Inlet. https://bit.ly/4teVKOg
More details are in our story map on the topic here: https://bit.ly/4dPEnii