Dr. Heather McFarlin

@volcanoheather.bsky.social

Mom, Alaska seismology, volcanology, LGBTQ+ rights, abortion advocate, social justice and equity.

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: https://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.”

⚒️ 🧪 A M6.8 earthquake struck Kyushu, Japan today. Large quakes in Japan are common and often pass without much notice, but this one is serious - instead of occurring offshore in the subduction zone, it is a shallow, strike-slip event near Kumamoto. Damage and deaths have already been reported.

Southern Japan struck by deadly M6.8 earthquake

A reminder of the neighboring 2016 Kumamoto M7.0 earthquake

earthquakeinsights.substack.com

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.

BildBild

PNSN’s stations monitor seismic activity in our region, but they also capture signals from earthquakes all around the world. Seismic waves from today’s M6.8 earthquake in Kumamoto, Japan traveled over 5000 miles to our network in WA and OR, arriving just over ten minutes later.

Map showing nine seismic stations across WA and OR with an arrow coming from the west, captioned "Seismic waves from Japan ~8500 km away"Graphic showing waveforms of the seismic activity recorded at those nine stations, with P, S, and surface waves identified by arrows.

🚨BREAKING: Alaska recently removed thousands of people from its active voter lists after they were flagged as noncitizens. But a state news outlet found that some were in fact eligible to vote. www.democracydocket.com/news-alerts/...

Alaska wrongly removed eligible voters from active voter lists

Alaska removed thousands from voter lists after they were flagged as noncitizens. But a state news outlet found some were eligible to vote.

democracydocket.com

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.

Do I have any bsky friends who have a good photo or two of glacial landforms at Bull Lake WY, who wouldn't mind contributing them (with attribution) to the "Wyoming Rocks!" book? It appears to be one of the last sites I don't care for my own photos from 🫠

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. https://bit.ly/4wxz3pV

Bild

Please blow up the public comment (included below): BREAKING NEWS (7/15) — The administration wants to destroy Chaco Canyon without consulting Tribal Nations. It’s an irreplaceable historic & cultural site with 4,700 archeological sites that could be lost to the bulldozers of oil & gas development

BildBild

It's July, when coastal recreation🎣 and work peak, and landslides🏔️start to become a worry. We have a new interactive StoryMap for your perusal, focusing on landslide–tsunami 🌊 history and active monitoring in coastal Alaska. https://earthquake.alaska.edu/landslide-tsunami-hazards-coastal-alaska

Landslide–Tsunami Hazards of Coastal Alaska | Alaska Earthquake Center

July marks the anniversary of Alaska’s most notorious landslide, Lituya Bay (1958), which generated a devastating tsunami.

earthquake.alaska.edu

Today's anniversary of the 1958 Lituya Bay landslide and tsunami (still known as the highest tsunami runup ever recorded) and last summer's Tracy Arm event remind us that these hazards persist in coastal Alaska. Learn more about our two varieties of tsunami hazard here: https://bit.ly/4f8Fjxg

Tsunamis in Alaska | Alaska Earthquake Center

In Alaska, tsunamis can strike within minutes of an earthquake. Tsunami awareness and safety are crucial to anyone who lives, works, or travels along Alaska’s coast. Historically, tsunamis generated b...

bit.ly

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. https://bit.ly/4vmFBqF

BildBildBild

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. https://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.”

Next, we have our service dogs. They are wild born, proper rez dogs raised in the ozarks on a working farm 🌲🐶🐶🌲 We are raising $15,000, but can go get them when we reach $10k. We will repost this post with dollar amount updates but are just over 10% right now. Give 🔽

LUSID Residencies

LUSID Residencies is a non profit that takes children who were sexually abused on extended term healing adventures with service dogs, counselors, refugees, & decolonized veterans. We exist to break th...

lusidpsychcare.org

We need Wilderness First Responder training for our permitting and insurance. If you want to donate to this, use the general fund. We would greatly appreciate it! If you or someone you know would provide us the training for free or at a discount we would be oh so grateful 🧡🪶✨ lusidpsychcare.org

LUSID Residencies

LUSID Residencies is a non profit that takes children who were sexually abused on extended term healing adventures with service dogs, counselors, refugees, & decolonized veterans. We exist to break th...

lusidpsychcare.org