We have reviewed a magnitude 5.8 event that occurred at 11:21 PM AK time. This event was located 42 miles SSW of Adak and 15 miles deep.

This event was reported felt in Adak.

For more information, please visit:
https://earthquake.alaska.edu/event/ak2025xbbjhg

We have reviewed a magnitude 4.9 event that occurred at 06:38 AM AK time. This event was located 11 miles NNE of Tyonek and 39 miles deep.

This event was reported felt throughout Southcentral Alaska.

For more information, please visit
https://earthquake.alaska.edu/event/ak2025wzudcl

Map of Alaska showing earthquakes from November 12th through 19th. About 400 earthquakes detected, with 3 reported as felt, and the largest was a magnitude 4.4 on November 12th south of Chignik.

What’s Shaking Alaska?! Welcome to your weekly seismic update from across the state, brought to you by the Alaska Earthquake Center. It was a relatively quiet week with 400 earthquakes, 3 of which were felt, and the largest was a magnitude 4.4 south of Chignik on November 12. https://bit.ly/3JWzveZ

The answer for today is Gen 3, the new data analysis system (and so much more!) that went live on November 17. Great job @dasliterata.bsky.social on jumping in with the answer!

Correct! Great job on staying up-to-date on what's going on at the Earthquake Center!

Map of Alaska seismic stations with Trivia Tuesday question: What is the Earthquake Center's nickname for the new seismic analysis system we just launched?

It's #TriviaTuesday! The first person to comment the correct answer 🥇 will be entered into the drawing for Earthquake Center swag at the end of December. You can hunt for the answer 🔎 on our website earthquake.alaska.edu.

A Complete Overhaul—Under the Hood | Alaska Earthquake Center You might not notice as you browse through our interactive map and events list, but the Alaska Earthquake Center has completely rebuilt the engine that drives this information.

Have you wondered how a place like the Alaska Earthquake Center stays on top of technology change 🖥️ in data analysis and comms? Over a year in the making .... we transition this week to a brand-new system that we're calling Gen 3 🛰️. Read about it here: https://bit.ly/3LMpOjK. Questions❓ Just Ask.

Healy M3.6 | Alaska Earthquake Center Alaskan Earthquake Center

We have reviewed a M3.6 earthquake that occurred at 9:57 pm, 4 miles deep and 12 miles SW of Healy. This event was reported as felt in Healy and Cantwell. For more info, or to submit a “Did You Feel It” report, please go to
https://earthquake.alaska.edu/event/025eqzfb0v

We thought the field season was over🗻, but ... our crew is hardy💪! Recent site upgrades at Fort Knox, Bradley Dam, and Cordova, and a small crew in Homer and Kodiak to retrieve an experimental nodal array.

Tyonek M3.7 | Alaska Earthquake Center November 11, 2025 20:25:38 AKST (November 12, 2025 05:25:38 UTC)

We have reviewed a M3.7 earthquake that occurred at 8:25 pm, 3 miles deep and 14 miles E of Tyonek. This event was felt throughout the Anchorage area and in the Kenai Peninsula. For more info, or to submit a “Did You Feel It” report, please go to
https://earthquake.alaska.edu/event/025eioy9xw

Quick thinking! You were the first to have today's correct answer, so we'll add you to the drawing list!

The correct answer is...Alaska-Aleutian Megathrust! TripUpStairs had the correct answer the quickest, so will be added to the drawing. If you want to listen to some of our previous What's Shaking radio episodes, you can find them at earthquake.alaska.edu/AEC-radio.

Map of Alaska with seismic stations in background, with Trivia Tuesday at the top and the question What was the magnitude of the largest earthquake ever recorded on the North Slope?

It's #TriviaTuesday! For this one you may need to do a little digging ⛏️ on the Earthquake Center website earthquake.alaska.edu. The first person to post the correct answer will have their name added to the drawing in December for some Earthquake Center swag! 🎊

We thank all the veterans who honorably serve our country and our team.
This photo shows a station that monitors seismic activity as part of facility safety measurements for one of our military partnerships. https://bit.ly/4qXOxBW

The closest AEC stations to the Oct 30th quake are at Bradley Lake Dam. These four stations were installed starting in 2008, in partnership with the Alaska Energy Authority. Read about the Oct 30 shaker here, https://bit.ly/4qLdlNg, or listen to this week's episode: https://bit.ly/4ovGV7W

The 2002 Denali Fault Earthquake: Twenty Years of Shaking Up Alaska Seismology | Alaska Earthquake Center On November 3, 2002, a magnitude 7.9 earthquake shook Interior Alaska for two to three minutes, the largest inland earthquake in North America in 150 years.

Today's answer is the 2002 Denali Fault Earthquake ruptured from the Susitna Glacier Thrust Fault to the Denali Fault to the Totschunda Fault. Dee answered correctly, we'll add you to the list for the drawing. Bonus kudos for spelling "Totschunda" correctly!😆 earthquake.alaska.edu/2002-denali-...

Dee, you are correct! 🤩 The answer is that the 2002 Denali Fault Earthquake ruptured from the Susitna Glacier Thrust Fault to the Denali Fault to the Totschunda Fault. We'll add you to the list for the drawing in December. Bonus kudos for spelling "Totschunda" correctly!😆

Map of Alaska with seismic stations in background, with Trivia Tuesday at the top and the question The November 3, 2002 magnitude 7.9 Denali Fault Earthquake was a complex rupture that occurred along which three faults?

It's #TriviaTuesday! As always, first person to list the correct answer gets their name entered into a drawing for Earthquake Center swag at the end of December.🤩 You can sift through our website for answers! 👀 earthquake.alaska.edu

Kotzebue M4.0 | Alaska Earthquake Center Alaskan Earthquake Center

We have reviewed a M4.0 earthquake that occurred at 9:26 pm, 10 miles deep and 25 miles S of Kotzebue. This event was felt in Kotzebue. For more info, or to submit a “Did You Feel It” report, please go to earthquake.alaska.edu/event/025e5h...

We have reviewed a M3.2 earthquake that occurred at 10:26 am, 13 miles deep and 43 miles E of Homer. This event was felt in Homer. For more info, or to submit a “Did You Feel It” report, please go to earthquake.alaska.edu/event/025dz2...

May all your shakers be spooky but not scary—Happy Halloween from your Alaska Earthquake Center

Map of Kenai Peninsula showing seismograms from stations closest to the magnitude 5.4 earthquake.

More than 2,000 people filled out "Did You Feel It" reports for this morning's magnitude 5.4 earthquake on the Kenai Peninsula. Get the details in this story our amazing Earthquake Center team pulled together for you today!
https://earthquake.alaska.edu/mid-morning-quake-between-seward-and-homer

Seward M5.4 | Alaska Earthquake Center Alaskan Earthquake Center

Good morning Alaska! We have reviewed a M5.4 earthquake that occurred at 9:33 am, 15 miles deep & 43 miles SW of Seward. This event was felt in Kenai Peninsula and south-central Alaska. For more information, or to submit a “Did You Feel It” report, please go to earthquake.alaska.edu/event/025dxe...

The hope is that the public will follow, yes? Since so many of us are on social media to spread the good word (i.e., information).

The answer is the August 12, 2018 magnitude 6.4 Kaktovik earthquake. Learn more about this unusual earthquake earthquake.alaska.edu/event/018aap...

Map of Alaska with seismic stations in background, with Trivia Tuesday at the top and the question What was the magnitude of the largest earthquake ever recorded on the North Slope?

It's #TriviaTuesday! The first person to list the correct answer 🙋 gets their name entered into a drawing for Earthquake Center swag at the end of December.🤩 Don't forget to scour our website for answers! earthquake.alaska.edu 👀

Adak M5.1 | Alaska Earthquake Center Alaskan Earthquake Center

We have reviewed a magnitude 5.1 earthquake at 2:13 AM local time, which occurred 38 miles SSE of Adak and 14 miles deep. This event was reported felt in Adak.

For more information, or if you’ve been shook awake and want to submit a felt report, please visit

earthquake.alaska.edu/event/025dp0...

Skwentna M4.6 | Alaska Earthquake Center Alaskan Earthquake Center

We have reviewed a magnitude 4.6 earthquake, which occurred at 12:03 PM local time in the Cook Inlet region of Alaska. This event was 41 miles deep and was felt in Anchorage and Mat-Su Valley.

For more information, or to submit a felt report, please visit

earthquake.alaska.edu/event/025dni...

What it takes to catch a landslide in Alaska | Alaska Earthquake Center The Alaska Earthquake Center has been using seismic instruments to monitor unstable slopes in Prince William Sound since August 2023 (Figure 1).

well, we didn't get any responses on the day we posted, but if you come across this we don't want you to feel unanswered! find the answer here: earthquake.alaska.edu/what-it-take...

One of our graduate students just published on exactly this topic! Teaching computers from earthquake catalogs. pubs.geoscienceworld.org/ssa/bssa/art...