How do they do it? This week’s #VolcanoWatch has #HVO seismologists talking about how they tell the difference between local tremor bursts (like the July 30 burst deep beneath Pāhala) and a long-distance earthquake that showed up on HVO's seismic network. usgs.gov/observatories/…

Calling K-12 artists! The Smithsonian Global Volcanism Program is seeking volcano-themed artwork from K-12 students for GVP’s online 2024 Volcano Art Gallery. Submit an original piece using any medium, during Sep 1 to Oct 31, 2024 (US residents only). volcano.si.edu/projects/Stude…

Hydrothermal explosions, like that which occurred on July 23, 2024, in Biscuit Basin, are not just a hazard that occurs in Yellowstone. #Yellowstone #CalderaChronicles travels the world this week to learn more. ow.ly/k3vS50T3qpz Yellowstone National Park

🚨New paper! "From field station to forecast: managing data at the Alaska Volcano Observatory" This paper covers our data sources, types, tools, and resources, from creation through integration, interpretation, and storage. rdcu.be/dSi3R USGS Volcanoes🌋 Alaska DGGS UAF Geophysical Institute

AVO Shishaldin GREEN/NORMAL - Aviation Color Code and Volcano Alert Level decreased to GREEN/NORMAL bit.ly/47oE7C1

#Shishaldin GREEN/NORMAL Over the past several months, signs of volcanic unrest at Shishaldin Volcano have been declining. Slightly elevated seismicity, small infrasound signals and weak gas emissions continue to be detected 1/5 USGS Volcanoes🌋 UAF Geophysical Institute Alaska DGGS

Interagency Volcano Plan documents how #USGS #HawaiianVolcanoObservatory, Hawaiʻi County Civil Defense Agency & Hawaiʻi Volcanoes National Park work together during volcanic crises. Plan provides guidelines for roles, responsibilities, notifications & more usgs.gov/media/files/is…

Cascade volcanoes at normal, background levels of activity this week: usgs.gov/programs/VHP/v…. #CVO field team completes "campaign" GPS survey at #MountStHelens. Receiver set up on benchmark & "talks" with satellites all day. Data collected for routine deformation monitoring.

Recent Expansion of the Cascades Volcano Observatory Geophysical Network at Mount Rainier for Improved Volcano and Lahar Monitoring #SRL @USGSvolcanoes updates us on the status of lahar monitoring at Mount Rainier. (1/2) buff.ly/3yKdfiS

#Yellowstone Volcano Observatory monthly update Sep. 1, 2024, 6:33 MDT ow.ly/QJWa50TbQPi AUGUST SUMMARY: - about 40 located quakes (max=2.0) - seasonal pause in long-term subsidence - no Steamboat Geyser eruptions - minor surges from Black Diamond Pool Yellowstone National Park

What did the Yellowstone landscape look like after one of its large caldera-forming eruptions? Would you believe it probably resembled Alaska? #Yellowstone #CalderaChronicles draws clues from crystals this week. ow.ly/Bxkl50T5S2F Yellowstone National Park

There's oil in #Yellowstone? The surprising answer is yes. The black patches in the Calcite Springs thermal area are oil seeps. The oil comes from ancient sediments, when the area was part of an inland sea. See the seeps in this #YVO monthly update. youtu.be/aqDMAn80Vmg

The US is one of Earth’s most volcanically active countries. The downstream & downwind threats drive #USGS’ need to decipher eruptive behavior, monitor current activity & talk with the public, to mitigate damaging effects of these forces of nature. #NPM2024 #StartAConversation

All volcanoes in California were at normal levels of activity last week. usgs.gov/programs/VHP/v… Ignimbrite or ash-flow tuff? Read about both names in this week's California Volcano Monitor: usgs.gov/observatories/…