15 comments on “Pahto the Lonely: An interestingly-titled post on Mount Adams, East of St. Helens

  1. Thank you mjf, great article! Now I wonder, if the glaciers are disappearing at that rate, probably much faster than after the ice ages, would that not relieve the pressure on any magma available below Mt. Adams enough to initiate new activity in the “near” future? With Mt. Rainier and St. Helens in the neighborhood that might not be entirely impossible. And maybe that was one of the reasons that those two erupted when they did as well?


    • It doesn’t appear to be (much of) a factor in this case. There wasn’t a notable increase in the Cascade activity levels in the early Holocene like in Iceland, and there’s no signs of remnant isostatic rebound from GPS signals today (only widespread signals are from the building pressure at the subduction zone). The massive collapse at Rainier 500 years ago didn’t lead to magmatic eruptions. Not much is known of the deep system of Adams anyway. The iMUSH experiment results are a little above my level ( 😀 ), but are worth having a look at.


  2. Thanks very much for the great article on one of my “backyard” cones. Interestingly, it’s the only major Cascade volcano that is climbable (in summer) without crampons and/or ice axe. The south side offers a long (long), gradual hike to the summit. The sulfur smell is still very obvious, almost to the point of making one nauseous. Perhaps that’s why the climbers in the aaurora storm video turned back at the false summit!


    • That’s more water on my mill about the pressure release below the mountain – I hope you live in a safe distance from it, just in case 😉 Surely they must monitor Mt. Adams a bit more thoroughly if there are dangerous gasses being emitted in large amounts, if only for the sake of the visitors?


      • Well done article, Granyia! I expand significantly on everything in my new book about Mount Adams, scheduled to be published this fall. It will have approx. 50,000 words and about 180 illustrations, including maps and historic photos. The book will be a combination of human history, mountain science and memoir—after spending spending seven decades on the mountain. More details will be on a website that isn’t up yet (hopefully this spring?), but it will be mtadamsbook.com. Thanks for giving me credit on my MSH eruption photo. It was actually taken from the top of 7,800-ft. South Butte.


        • Hi Darryl, this looks like a wonderful book. I added an addendum to the end of this post. 🙂


          • Hi Granyia, Thank you! All looks good.

            I’m grateful for the acknowledgements, and of course your wonderful site.

            No need to post this…just a private thanks. Cheers, Darryl

            — Darryl Lloyd 541-436-2882 (h) 541-806-0475 (c) http://www.mtadamsbook.com



  3. Today was a busy day for volcanoes, it seems. Bogoslof went from Orange to Red and Orange again after a quite substantial eruption; a warning for strong activity in Fuego has been issued; Bezymianny erupted unexpectedly, and the weather in Kamchatka was clear enough to see Shiveluch busying himself… here are a few webcam images from today.

    After a strong explosion last night that produced an ash cloud of 6 (to 10 km) high (acc. to various reports),…

    Bezymianny was still raging a few hours ago.

    And a short GIF I had made from Shiveluch:


  4. The Indian Coast Guards published this outstanding video of Barren Island from a reconnaissance mission to monitor the eruption. It has been recorded using a night vision camera:


  5. Pingback: Indian Heaven Volcanic Field, Washington State, USA |

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