Mendocino Triple Junction
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mendocinotriple.bsky.social
Mendocino Triple Junction
@mendocinotriple.bsky.social
550 followers 140 following 380 posts
Where all the movers and shakers meet up: Cascadia, San Andreas, and Gorda. Juan de Fuca? I barely knew her.

SoliDEIrity. Diversity is our strength. Love and science are for everyone.

(Header: diagram of the the 3 plates that make me! From U. of AZ)
Posts Replies Media Videos
mendocinotriple.bsky.social
Go, Axial, go! #AxialSeamount #volcano #geology
Screenshot of the QuakeFeed mobile app, showing the US Pacific Northwest and the ocean to its west, with plate boundaries, fault lines, and wildfire details. On the far left of the Juan de Fuca plate, west of Oregon, are markers for 4.8- and 5.4-magnitude earthquakes.
October 29, 2025 at 7:39 PM
mendocinotriple.bsky.social
Scribe did some back-of-the-napkin/phone-calculator math, and… #Kamchatka #earthquake
List of the logarithmic Richter magnitudes from M0 (1) and M1 (10) up to M9 (1,000,000,000 or 1 trillion). iOS Calculator screenshot of two recent calculations: 10^8, or magnitude 8, is 100,000,000. 10^8.7, or magnitude 8.7, is 501,187,233.627.
July 30, 2025 at 1:40 AM
mendocinotriple.bsky.social
Holy freaking crap. Initially an 8, now estimated at an 8.7…that is a MASSIVE upgrade. #Kamchatka #earthquake
Screenshot of the QuakeFeed iOS app with the Kamchatka 8.7 megathrust earthquake selected. A bunch of different-colored concentric circles surround it, and there are a bunch more earthquake markers in the same area.
July 30, 2025 at 1:25 AM
mendocinotriple.bsky.social
I had TSwift classics on repeat and got a little too much into Shake It Out…
Screenshot of the QuakeFeed mobile app, showing a magnitude 4.8 earthquake off the N. California coast, in the middle of the Gorda Plate.
July 29, 2025 at 11:22 PM
mendocinotriple.bsky.social
#NoticeMeSenpai
Screenshot from the QuakeFeed mobile app, showing the Mendocino Triple Junction. There are markers for 2 quakes right at the junction, one 2.4 and one 3.0. The 3.0 one is selected, and a pane at the bottom reads: Petrolia, California Jul 8, 2025 10:22 AM (right arrow) 517 mi (down arrow) 6.8 mi 40°15'30.6"N 124°15'46.8"W USGS
July 8, 2025 at 11:03 PM
mendocinotriple.bsky.social
I’m unable to tag Tahoma/Rainier here for some reason — but congrats to them on freaking out Puget Sound. 😂🎉

By my count, there have been 23 quakes in the last 7-8 hours (between 1-9AM PT). Exciting!!
Cropped screenshot of the QuakeFeed mobile app. It’s zoomed in on the summit of Mt. Rainier/Tahoma, where there are markers for over 20 earthquakes within the last 24 hours (between 1-9AM PT on July 8, 2025), ranging from magnitudes 1.1 to 1.7.
July 8, 2025 at 3:50 PM
mendocinotriple.bsky.social
The PNSN slow-tremor map is quite an impressive display, too. M6 quakes playing out over multiple days/weeks — sneaky hobbits, you are. 😆♥️
Mobile screenshot of the Pacific Northwest Seismic Network’s slow tremor map, showing quakes over the last week color-coded by recency. All are on the Cascadia subduction zone. Most are in Oregon and Vancouver Island.
June 20, 2025 at 5:29 PM
mendocinotriple.bsky.social
The NPS knows what’s up 😎 @altnps.bsky.social

www.linkedin.com/feed/update/...
Screenshot of the first half of a LinkedIn post from yesterday by the National Park Service. Text reads: Today's #NationalParkPlaylist is all about classic rock! Forget electric guitars and pounding drums-classic rock in your national parks is all about, well, real rocks. Classic. Who's ready for a rocking geologic tour? 🤘 🪨 Arches National Park Signature Sound: Wailing wind-sculpted arches with vibrant riffs and a gritty, desert-edge. 🪨 Yosemite National Park Signature Sound: Thunderous, polished riffs of glacier-sculpted granite, with soaring high notes from Half Dome. 🪨 Grand Canyon National Park Signature Sound: Layered harmonies of colorful strata, with a slow, erosive bassline carved by the Colorado River over millions of years. 🪨 Hawaii Volcanoes National Park Signature Sound: Molten, flowing basslines of lava, with explosive cinder cone screams and steam. Screenshot of the second half of a LinkedIn post from yesterday by the National Park Service. Text reads: 🪨 Pictured Rocks National Lakeshore Signature Sound: Melodic waves crashing against soaring sandstone cliffs, with vibrant mineral-stained harmonizing riffs. 🪨 Bryce Canyon National Park Signature Sound: Ethereal winds weaving through spire-shaped hoodoos, with a pink-and-orange glow that hits a joyful chorus. 🪨 Devils Tower National Monument Signature Sound: A deep, resonant hum from a rocky tower that takes center stage as it rises out of the plains. #NationalParkWeek #Geology #NationalParks There are a few photos of a few of the parks at the bottom (Arches and Yosemite in full, and cropped photos of Pictured Rocks, Bryce Canyon, and the Grand Canyon), but it’s not possible to display them all.
April 25, 2025 at 7:16 PM
mendocinotriple.bsky.social
Mom! Mom! Mom! Mommy! Mom! Mom! Mom! Mom! Mooommmm!

Hi.

(these are from the last 7 days, lol)

#NoticeMeSenpai
March 6, 2025 at 5:58 AM
mendocinotriple.bsky.social
Cracking my knuckles in preparation for the next 4 years…
Screenshot from the QuakeFeed app, showing a magnitude 3.6 earthquake at the Mendocino Triple Junction.
January 19, 2025 at 8:47 PM
mendocinotriple.bsky.social
From lelanddt and samowarrior on Reddit. (Will take them down if there’s any objection to resharing them.)

#tornado #TornadoWarning #ReddingCA #CAtornado #CaliforniaTornado
Grey cone-shaped tornado on the ground behind a line of trees, with a road and farmland in the foreground. From u/lelanddt from Reddit. Grey tornado far in the distance underneath a heavy grey mesocyclonic cloud and lighter skies in the background. Scrubby grasslands are in the foreground. From AlertCalifornia and UC San Diego, shared by r/samowarrior on Reddit.
January 4, 2025 at 3:48 AM
mendocinotriple.bsky.social
Rock on, everyone, and keep aiming for the horizon. The earth is vast and full of knowledge, opportunity, and joy. I truly hope that 2025 brings good things for you all.

(Photo from Gravel Beach: gravelbeach.blogspot.com/2014/07/cape...)

#HappyNewYear
Cape Mendocino coast. Sloping ground makes up a diagonal foreground, with Sugar Loaf Mountain and the Pacific Ocean beyond.
December 31, 2024 at 8:23 PM
mendocinotriple.bsky.social
The #AxialSeamount’s blowing a lot of smoke, but it doesn’t even warrant an address according to Apple Maps and it’s due west of Cape Disappointment of all places. I’ll be impressed when it shows REAL results.
Apple Maps screenshot of the western US and Pacific Ocean, with a marker for the Axial Seamount.
December 30, 2024 at 4:08 AM
mendocinotriple.bsky.social
Just a little sumthin’ sumthin’ so y’all don’t forget about me.

Though, what I lack in hot seismic action, I make up for with hot flirting action. 😘
Screenshot of QuakeFeed showing a M3.9 earthquake at Petrolia, CA, on 12/27/24 at 2:39PM.
December 28, 2024 at 2:42 AM
mendocinotriple.bsky.social
Here’s a selfie from Apple Maps satellite view. Not the most flattering…I’ve got quite the browline at the moment.
Apple Maps Satellite View of the Pacific coast off N. California. There are a bunch of undersea contours that kind of resemble a craggy masculine face, and a text label for Cape Mendocino.
December 18, 2024 at 2:41 AM
mendocinotriple.bsky.social
What’s shaking, NorCal? Oh, wait - that’s me. Teehee!
Screenshot of the US Geological Survey “Shake Map” of the 2024 Mendocino Offshore 7.0 earthquake.
December 11, 2024 at 7:11 AM