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News
Yellowstone Volcano Observatory…in Arizona?!
6+ day, 18+ hour ago (767+ words) usgs.gov Official websites use.gov Secure.gov websites use HTTPS Yellowstone Volcano Observatory…in Arizona?! The Yellowstone Volcano Observatory is not only responsible for monitoring and studying Yellowstone, but also volcanic systems throughout southwestern United States. Arizona hosts multiple…...
Volcano Minute — HVO field engineers, the backbone of the observatory | U.S. Geological Survey
3+ week, 2+ day ago (264+ words) Have you ever felt an earthquake and rushed to the USGS website to check where it happened and what magnitude it was? Or wondered whether Kīlauea’s summit is building pressure again so you took at peek at the tiltmeter data?...
Volcano Watch — A thank you letter to the HVO field technicians
3+ week, 2+ day ago (249+ words) Did you feel that earthquake? Time to check the location and magnitude. Do you need to find out how much Kīlauea summit region has repressurized since the last eruption? You can check tiltmeter data in about three clicks. Is the…...
August 12, 2026 — Episode 53 plume at sunset
1+ mon, 23+ hour ago (101+ words) This wide-angle, panoramic photo from the northwest rim of Halemaʻumaʻu shows the outgassing plume from Kīlauea summit eruption episode 53 lofting vertically and then drifting west—towards the summit of Mauna Loa—on August 12, 2026. The sun was setting behind the plume,…...
An expanded understanding of the Lava Creek Tuff eruption
3+ week, 6+ day ago (783+ words) usgs.gov Official websites use.gov Secure.gov websites use HTTPS An expanded understanding of the Lava Creek Tuff eruption Supereruptions are often imaged to be massive instantaneous events. New geological evidence from Yellowstone, however, shows that these eruptions are…...
Volcano Minute — Using ocean noise to monitor for volcanic eruptions
4+ week, 2+ day ago (308+ words) Volcano Minute is a weekly audio activity or science update produced by U.S. Geological Survey Hawaiian Volcano Observatory scientists and affiliates. Out in the open ocean, waves are constantly rolling and crashing. That motion creates a steady, rhythmic beating on the…...
Volcano Watch — Using ocean noise to monitor for volcanic eruptions
1+ mon, 1+ day ago (441+ words) Ocean swells are constantly beating on the ocean floor. This nonstop drumming creates continuous signals that travel through the Earth and are recorded on seismometers. Changes in the speed of these ocean noise signals can give us clues about volcanic…...
Lava fountaining episode 53 at the summit of Kīlauea
1+ mon, 23+ hour ago (100+ words) Lava fountaining episode 53 of the ongoing eruption at the summit of Kīlauea began at 3:45 p.m. HST on August 12, 2026. This photo of the fan shaped lava fountain was taken from the Uēkahuna overlook in Hawaiʻi Volcanoes National Park, around 5:00 p....
Volcano Watch — Will Kīlauea summit lava fountains get taller? Time and chemistry will tell!
1+ mon, 6+ day ago (549+ words) Kīlauea’s current summit eruption started on December 23, 2024. Fifty-two episodes of lava fountains have happened on average every 11 days, and we still have many questions about this eruptive behavior. Here, we look at lava fountain heights with magma chemistry to better…...
Volcano Minute — What can chemistry tell us about lava fountain heights?
1+ mon, 6+ day ago (280+ words) Volcano Minute is a weekly audio activity or science update produced by U.S. Geological Survey Hawaiian Volcano Observatory scientists and affiliates. Kīlauea’s summit has been erupting intermittent lava fountains since December 23rd, 2024, producing 52 episodes of lava fountains so far—some shooting more…...