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akearthquake.bsky.social @akearthquake.bsky.social · 18h

Grad student extraordinaire Cade Quigley has been experimenting with graphics to show features of recent earthquakes and how/what we detect. What do you think of these options, from this morning's Interior shaker? Let us know in the comments what you like or dislike, understand or are confused by.

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akearthquake.bsky.social @akearthquake.bsky.social · 21h

We were in the middle of a tour during the Great Alaska ShakeOut this morning. A shoutout to these students, who did a great job practicing Drop Cover Hold! Did you participate in the ShakeOut today?

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akearthquake.bsky.social @akearthquake.bsky.social · 15/10/2026

What’s Shaking Alaska?! The annual earthquake emergency drill, the Great Alaska ShakeOut, is Oct.15 at 10:15am. Statewide, people and organizations will test their readiness for a large, damaging earthquake. Listen to safety tips at buff.ly/t7RrOIm

The title is What's Shaking Alaska?! Week of October 7–14, 2026. A map of Alaska in the background shows dots where earthquakes occurred. Text reads: About 600 earthquakes were detected, and 2 earthquakes were reported felt. The largest earthquake was a magnitude 4.5 in the western Aleutians on October 12.

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akearthquake.bsky.social @akearthquake.bsky.social · 13/10/2026

It's #TriviaTuesday! The first person to answer correctly will have their name entered in a drawing to win Earthquake Center swag in December. You can find the answer on our website. 👀

Alaska Earthquake Center Trivia Tuesday graphic asking "Who was the first Alaska State Seismologist?" featuring a black-and-white portrait of a seismologist at recording equipment. Callout text says "Hint: Check out the Earthquake Center Timeline on our About Us tab" with the website earthquake.alaska.edu listed.

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akearthquake.bsky.social @akearthquake.bsky.social · 10/10/2026

Watch the seismic waves from today's quake in Panama ripple across Alaska's network. Shaking was widespread and intense, but thankfully, destruction was not major.

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akearthquake.bsky.social @akearthquake.bsky.social · 06/10/2026

#TriviaTuesday is back! First to answer correctly will have their name entered in a drawing to win AEC merch in December. Poke around our website for the answer! And ask us anything about our new tsunami map app.

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akearthquake.bsky.social @akearthquake.bsky.social · 02/10/2026

It's our final #FieldWorkFriday of the season! Today, we revisit Nikolai where our local school partner 🏫 allowed the team to build the tower shown here. It receives the data streamed by radio wave 📻️ from 2 remote stations, K20K and L20K, each about 40 miles from Nikolai. Stay tuned 📡 for TriviaTues

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akearthquake.bsky.social @akearthquake.bsky.social · 28/09/2026

We love meeting with people to talk about what we do and how they can prepare for the next significant earthquake. On Saturday, we sent 2 staff to the MatSu Emergency Preparedness Expo. Where do YOU get your earthquake information from?

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akearthquake.bsky.social @akearthquake.bsky.social · 26/09/2026

Do you live in the Wasilla area? Get on over to the 18th annual Mat-Su Emergency Preparedness Expo! Alaska Earthquake Center folks will be there (along with a LOT of others!) to answer your questions about our work with earthquakes. And tsunamis. And landslides. TODAY! 11am-3pm at Menard Sports Ctr.

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akearthquake.bsky.social @akearthquake.bsky.social · 25/09/2026

It’s #FieldworkFriday! Field team members Shah Khan and Cade Quigley visited Nikolai recently to build a new relay station from the ground up! Thank you to Top of the Kuskokwim School for hosting the new station. Khan and Quigley also gave a presentation to students and practiced earthquake safety!

Two people smile and give a thumbs-up beside a pole-mounted Alaska Earthquake Center data relay station labeled "Earthquake Monitoring Station," with antennas and wiring visible.

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akearthquake.bsky.social @akearthquake.bsky.social · 23/09/2026

The biggest earthquake of the past week was a magnitude 6.5 that went largely unnoticed. Why? Check out our recent radio segment here: buff.ly/0NiANuS

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akearthquake.bsky.social @akearthquake.bsky.social · 19/09/2026

Happy #FieldworkFriday! We maintain seismic stations at several of Alyeska's Trans Alaska Pipeline System pumpstations. This week the field team upgraded the data digitizer (which makes data ready to transmit) at station PS08 and performed "shake tests" to ensure it would alert Alyeska's systems.

A technician sets up seismic monitoring equipment inside a server rack, connecting and organizing multiple network and sensor cables among tangled cords, with the "Alaska Earthquake Center" label visible in the lower-right corner.

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akearthquake.bsky.social @akearthquake.bsky.social · 11/09/2026

It’s #FieldworkFriday! A shoutout to Chevak School and all of our community partners! Field team members Shah Khan and Celia Chmielowski went to Chevak in western Alaska to move a relay station antenna at the school. K13K on Kusilvak Mountain sends seismic data via radio, then school internet.

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akearthquake.bsky.social @akearthquake.bsky.social · 07/09/2026

The earthquakes don't take a break, and neither do we! Our thanks go out this Labor Day to all who work, especially when others get a break.

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akearthquake.bsky.social @akearthquake.bsky.social · 04/09/2026

Cleaning up is part of fieldwork! Here's the helicopter slinging 7 old batteries from seismic station WAX back to Cordova.

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akearthquake.bsky.social @akearthquake.bsky.social · 04/09/2026

It’s #FieldworkFriday! The field team visited our station on Waxell Ridge (WAX) on its birthday! 🥳 This site next to Bering Glacier was installed by the USGS in 1975. Working around a slew of bad weather days, this visit the team installed new satellite and radio antennas, and 24 new batteries.

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akearthquake.bsky.social @akearthquake.bsky.social · 04/09/2026

This view of the swarm near Nikolski is a Northwest-Southeast cross-section showing event depth, sized by magnitude and colored by time since the start of the swarm. We will keep tracking this swarm as it continues to progress!

Cross-section graphic showing depth of earthquakes across time.

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akearthquake.bsky.social @akearthquake.bsky.social · 04/09/2026

We’ve had quite an active earthquake swarm south of Nikolski in the Aleutian Islands since Monday night, including 7 earthquakes of magnitude 5 or greater, and a magnitude 6.3 earthquake early this morning. On-duty seismologist Derreck Gossett's animation shows how the swarm has progressed thus far!

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akearthquake.bsky.social @akearthquake.bsky.social · 03/09/2026

What’s Shaking Alaska?! We’re often asked if the Earthquake Center is able to detect large earthquakes from around the world, and the answer is yes! When a large seismic event occurs, the seismic waves often travel over most of the globe. Listen to how this affects our Alaska: buff.ly/tbPANqt

The title is “What's Shaking Alaska?!” and the text reads “Week of August 26-September 2, 2026”. A map of Alaska in the background shows dots where earthquakes occurred. Other text reads “About 630 earthquakes were detected, and 2 earthquakes reported felt.” A circle with an arrow pointing to it is labeled “The largest was a magnitude 5.2 earthquake on August 21, south of Nikolski.”

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akearthquake.bsky.social @akearthquake.bsky.social · 28/08/2026

Glacier calving on the seismic record from nearby station BAT!

The two calving events circled on a waveform and spectrogram of seismic data from station BAT.

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akearthquake.bsky.social @akearthquake.bsky.social · 28/08/2026

It’s #FieldworkFriday! Here’s Barry Glacier calving twice, in a video by our field intern Devin Zigmont! The ice makes an impressive BOOM when it hits the water, which shows up on the seismic record at nearby station BAT. The waves from the tsunami 🌊 travel outward, like they would from a landslide.

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akearthquake.bsky.social @akearthquake.bsky.social · 27/08/2026

This week we check in with our tsunami scientist, Elena Troshina, as she travels to Wrangell and Petersburg to transmit tsunami hazard information to local officials. Click the link to hear the 90-s radio segment. earthquake.alaska.edu/sites/defaul...

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akearthquake.bsky.social @akearthquake.bsky.social · 21/08/2026

It's #FieldWorkFriday! This week's map shows stations visited in southern AK, including at our Bradley Lake partner site, where two strong-motion and two broadband sensors keep track of shaking at Alaska's largest hydro project. Statewide network map here: earthquake.alaska.edu/network

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akearthquake.bsky.social @akearthquake.bsky.social · 15/08/2026

It’s #FieldworkFriday! Student interns Cade Quigley, Chloe Crossen, and Devin Zigmont went to Barry Arm fjord to work on BAT and BAE (snow damaged the BAE bar on top). This area is highly monitored because a slumping wall of the fjord could cause a tsunami. Check out our storymap: arcg.is/1XKKG82

Two technicians from the Alaska Earthquake Center repairing an outdoor camera and mount on a seismic station atop a grassy Alaskan ridge, with fjord and snow-capped mountains visible in the background. Text says "Fixing the camera at BAE."

Alaska Earthquake Center field seismic station BAE—solar panel and sensors on grassy tundra—overlooking snow‑capped, glaciated mountains with a low cloud layer partly hiding the peaks. Text "View from BAE, clouds covering BAT".

Seismic monitoring station BAT with angled solar panels and antenna on a rocky alpine slope by a glacier, a person standing some distance behind it and an orange helicopter parked behind, labeled "Alaska Earthquake Center" and "BAT."

A view across Barry Arm Fjord taken by a camera on site on August 14, 2026. The fjord is framed by steep, scarred mountain slopes with two glaciers feeding the water, a foreground grassy ridge and the shadow of a camera; labeled "BAE camera view" (Alaska Earthquake Center).

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akearthquake.bsky.social @akearthquake.bsky.social · 13/08/2026

Over a thousand people reported within minutes that they were shaken by the Aug. 7 magnitude 5.6 earthquake west of Susitna. However, the most notable earthquake this week was a devastating magnitude 7.4 in Colombia on Monday morning. Listen to the story: earthquake.alaska.edu/sites/defaul...

The title is “What's Shaking Alaska?!” and the text reads “Week of August 5-12, 2026”. A map of Alaska in the background shows dots where earthquakes occurred. Other text reads “About 900 earthquakes were detected, and 3 earthquakes reported felt.” A circle with an arrow pointing to it is labeled “The largest was a magnitude 5.6 earthquake on August 7, northwest of Skwentna.” An inset box shows a zoomed in area titled “Skwentna aftershocks”.

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akearthquake.bsky.social @akearthquake.bsky.social · 07/08/2026

It's #FieldworkFriday! When our field team spotted the open door at G24K, they knew they had work to do. 🐻 A bear had torn open the door, ripped up the insulating battery bag, and pulled out cables. Then rodents 🐭 gnawed the insulation on the cables. After 2 days of repairs…G24K is back online! 🥳

Seismic instrument cables showing tiny rodent chew marks—hand holding a red cable among tangled blue cables, highlighting widespread cable damage.

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akearthquake.bsky.social @akearthquake.bsky.social · 30/07/2026

What’s Shaking Alaska?! When a significant earthquake happens in Alaska, the Earthquake Center is your go-to place for info on where, when, how big, and how widely it was felt. We have a seismologist on duty around the clock! Listen to how they respond to an earthquake: bit.ly/3S8UC1D

The title is “What's Shaking Alaska?!” and the text reads “Week of July 22-29, 2026”. A map of Alaska in the background shows dots where earthquakes occurred. Other text reads “650 earthquakes were detected, and 4 earthquakes reported felt.” Circles with arrows pointing to them are labeled “The largest was a magnitude 5.8 earthquake on July 26, southeast of Atka” and “Magnitude 5.0 on July 28, near Kantishna.”

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akearthquake.bsky.social @akearthquake.bsky.social · 29/07/2026

The moment tensor solution ("beach ball") for today's M5.0 quake indicates thrust motion striking NE-SW. The location, depth, and orientation place the earthquake on the Kantishna Hills Anticline, an area of active folding and thrust faulting associated with the larger Alaska Range thrust system.

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akearthquake.bsky.social @akearthquake.bsky.social · 25/07/2026

It’s #FieldworkFriday! D24K on the North Slope is prone to flooding. When field team members Celia Chmielowski & Carolyn Parcheta arrived, the hut's batteries were wet and nonfunctional. The team installed a 2nd cooler for new batteries and built a wooden platform in the hut to keep batteries dry.

A solar panel setup standing in a rocky outdoor area under a partly cloudy sky, with a seismic hut nearby connected to the panel. There is one box between them. The word "Before..." is in the top right corner.

Inside a seismic hut with six clear, rectangular batteries, each with visible wiring and circuit boards. A high-water line is marked on the wall above them. Additional items include coiled cables and other electrical equipment.

Interior of a seismic hut containing two AGM batteries on a wooden shelf. Below the shelf, there a small pile of rocks. Cables are visible on the left side.

A person standing outdoors in a natural setting, looking towards a solar panel and seismic monitoring equipment. There are two large boxes next to the hut. Lush greenery surrounds the area, with a partly cloudy sky above.

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akearthquake.bsky.social @akearthquake.bsky.social · 23/07/2026

What's Shaking Alaska?! Well, we can tell you. Check out this week's episode, about a rare Y-K Delta earthquake on July 15th. earthquake.alaska.edu/sites/default…

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akearthquake.bsky.social @akearthquake.bsky.social · 18/07/2026

It's #FieldworkFriday! A bear damaged B18K: a broken door, wires ripped out, and several 75-pound batteries tossed out of the hut. “Maybe the bear found a nice, cozy den for the winter,” said field engineer Shah Khan. Khan and intern Chloe Crossen repaired the station, and it's back online!

An individual is standing near a damaged seismic station hut on a grassy plain, pointing towards it. Cables and electronic components are visible, scattered on the ground. The cloudy sky forms the backdrop.

A damaged seismic station hut with a broken door exposing tangled wires and cables inside, set in a rocky outdoor landscape.

The image shows the repaired seismic hut with tan equipment cooler next to it, and in the foreground is a gray box on the ground that covers the seismometer borehole. These structures are surrounded by open fields with a distant horizon. The sky above is clear with some clouds.

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akearthquake.bsky.social @akearthquake.bsky.social · 16/07/2026

Just last week we posted about the relative rarity of earthquakes in the Y-K Delta region. This evening's shaker, on the western end of the Denali Fault, underscores the message that these rare occurrences help us clarify basic geology and where our hazards lie. bit.ly/4wxz3pV

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akearthquake.bsky.social @akearthquake.bsky.social · 09/07/2026

It's not often that very-low-frequency earthquake science hits the front page of a newspaper! The role that Alaska Earthquake Center monitoring played in the science is shown on p2. Check out this link to the Geophysical Institute story for an easier-to-read version. bit.ly/4vmFBqF

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akearthquake.bsky.social @akearthquake.bsky.social · 08/07/2026

When our field team was working out of Bethel a few weeks ago, we were asked if the area had any earthquakes. The answer is “not typically.” So why do we have seismic stations there? Listen to the reasons for tracking where earthquakes are common and uncommon: bit.ly/4wxz3pV

The title is “What's Shaking Alaska?!” and the text reads “Week of July 1-8, 2026”. A map of Alaska in the background shows dots where earthquakes occurred. Other text reads “500 earthquakes were detected, and 5 earthquakes reported felt. The largest was a magnitude 4.4 earthquake on July 7 in the western Aleutians.”

Map of Alaska showing earthquake hazard zones. Colors indicate chance of damaging earthquake shaking within 100 years: dark red (95%), red (90%), orange (75%), yellow (50%), green (25%), blue (5%). Highest hazard areas are Southcentral and Interior Alaska, and the Aleutian Islands. Key features include the Trans-Alaska Pipeline System, Alaska Railroad, fault lines, and seismic zones. Labels for cities like Anchorage, Fairbanks, and Juneau are visible. Map includes logos for Alaska Earthquake Center and USGS.

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akearthquake.bsky.social @akearthquake.bsky.social · 02/07/2026

Last week, a magnitude 7.5 earthquake devastated Venezuela. Our hearts go out to the people left homeless and those who lost loved ones. In Alaska, small quakes help us forecast where to expect bigger ones and design better infrastructure. Listen here. bit.ly/4v5Soxq

The title is “What's Shaking Alaska?!” and the text reads “Week of June 24-July 1, 2026”. A map of Alaska in the background shows dots where earthquakes occurred. Other text reads “600 earthquakes were detected, and 10 earthquakes reported felt. The largest was a magnitude 5.3 on June 28 near Cordova.”

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akearthquake.bsky.social @akearthquake.bsky.social · 27/06/2026

A magnitude 4.9 earthquake south of Kasilof produced weak to moderate shaking at 5:15 pm local time. The earthquake's 35-mile depth and the type of faulting that produced the shaking indicate that the earthquake came from the subducting Pacific Plate as it descends underneath North America.

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akearthquake.bsky.social @akearthquake.bsky.social · 25/06/2026

There is an interesting, ongoing swarm of earthquakes in an area of the state that is usually pretty quiet seismically. The Seward Peninsula, on the western coast, has experienced about 90 earthquakes since June 13th. Listen to this week's radio segment to learn more: bit.ly/4wtvi5d

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akearthquake.bsky.social @akearthquake.bsky.social · 19/06/2026

Happy #FieldworkFriday! This week the field team gave L19K a refresh: a satellite dish upgrade (before: yellowish rectangle), additional batteries, and replacement parts for the weather sensor. Undergrad Intern Chloe Crossen said the view didn't hurt either!

A young woman taking a selfie outdoors with a mountainous landscape in the background. Nearby is the L19K seismic hut with the door open with someone inside working. piece of equipment or shelter. The sky is partly cloudy.

A woman walks behind the L19K seismic hut, set against a backdrop of mountains and a blue sky. The station has a rectangular, yellowish older satellite antenna on top. The surrounding area is a grassy, open landscape with some scattered objects nearby.

A woman walks next to the L19K seismic hut with a helicopter parked nearby. The sky is partly cloudy.

Aerial view of a vast green landscape with patches of snow and distant snow-capped mountains under a partly cloudy blue sky. A helicopter blade is visible in the upper portion of the image.

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akearthquake.bsky.social @akearthquake.bsky.social · 17/06/2026

What's Shaking Alaska!? The Earthquake Center has our own testing vault tucked away on the University of Alaska Fairbanks campus, an insulated enclosure where we store and test sensitive seismic instruments. What is a testing vault and how does testing work? Listen here: bit.ly/3QuJbR8

The title is “What's Shaking Alaska?!” and the text reads “Week of June 10-17, 2026”. A map of Alaska in the background shows dots where earthquakes occurred. Other text reads “600 earthquakes were detected, and 1 earthquake reported felt. The largest were 2 magnitude 5.2 earthquakes on June 13 in the western Aleutians.”

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akearthquake.bsky.social @akearthquake.bsky.social · 12/06/2026

Sites J19K and L17K got some TLC this week, thanks to efforts of our seasoned field operations manager, Carolyn Parcheta, and undergrad intern Chloe Crossen. The effort to get to these sites in a short time frame, with equipment, and resolve technical issues, is not small! #FieldworkFriday!

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akearthquake.bsky.social @akearthquake.bsky.social · 11/06/2026

Seismic signals come from everywhere! This recently published study reveals the winter soundscape of Alaska's Parks Highway corridor. Planes, trains, and automobiles. And yes, earthquakes. The 2nd image shows signals of mining blasts (t=15 & 87 sec) and cars (t= 65 & 135 sec). bit.ly/4v4520C

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akearthquake.bsky.social @akearthquake.bsky.social · 11/06/2026

In this week's episode, we travel to Mekoryuk, Alaska, to troubleshot communications from one of our far-flung stations. earthquake.alaska.edu/sites/default…

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akearthquake.bsky.social @akearthquake.bsky.social · 03/06/2026

In 2017 the Earthquake Center installed seismometers in the UAF Engineering building, from the basement to the 5th floor. Check out this week's episode to learn how buildings shake differently depending what floor you're on! bit.ly/4vqkCn9

The title is “What's Shaking Alaska?!” and the text reads “Week of May 27-June 3, 2026”. A map of Alaska in the background shows dots where earthquakes occurred. Other text reads “500 earthquakes were detected, and 2 earthquakes were reported felt. The largest was a magnitude 5.6 on May 27 southeast of Adak.”

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akearthquake.bsky.social @akearthquake.bsky.social · 29/05/2026

It's #FieldWorkFriday! This week we check in on how data quality from a remote station is checked by our systems (IT) team back home. Whether by cell, sat., or email from a field laptop, we check the relay, then cap it off with a stomp test to ensure the wiggles are rolling in! Then on to the next.

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akearthquake.bsky.social @akearthquake.bsky.social · 23/05/2026

It's #FieldworkFriday time! Station SII on Sitkinak Island near Kodiak is back on track 🥳 after our field team fixed a power issue and upgraded the digitizer (the gizmo that converts the data into digital format so it can be transmitted to us). They lucked out with great weather too! ☀️

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akearthquake.bsky.social @akearthquake.bsky.social · 20/05/2026

In this week's episode, tsunami scientist Elena Troshina talks about our tsunami partnerships and how attending the National Tsunami Hazard Mitigation program meeting helps move Alaska's tsunami program forward. bit.ly/4uVvCbW The Kaltag fault earthquake is the first >M4 since 2000.

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akearthquake.bsky.social @akearthquake.bsky.social · 15/05/2026

It's time for #FieldworkFriday! 🚁Station R18K near Karluk on Kodiak Island got a COMPLETE overhaul! See our field team sending the hut off into the sky and guiding it into place on site. R18K is now almost a totally new station. They packed out the old gear--pack out what you pack in!

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