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Map view of relocated Yellowstone seismicity recorded during 2008-2022, colored by time, on the left. White line gives the outline of Yellowstone caldera. The A-A’ cross section through Yellowstone Lake is shown at the right and illustrates how seismic swarms that are distinct in time relate to one another. Adapted from Florez and others, 2025 (
Map view of relocated Yellowstone seismicity recorded during 2008-2022, colored by time, on the left. White line gives the outline of Yellowstone caldera. The A-A’ cross section through Yellowstone Lake is shown at the right and illustrates how seismic swarms that are distinct in time relate to one another. Adapted from Florez and others, 2025 (
EarthScope engineers Brendan Hodge (left) and Lia Lajoie (right) perform upgrades at the WLWY (White Lake) continuous GPS station in Yellowstone National Park. The white box contains the receiver, while the barrel on the ground contains batteries. The tower holds the solar panels, as well as a cellular modem and meteorological sensors that were recently
EarthScope engineers Brendan Hodge (left) and Lia Lajoie (right) perform upgrades at the WLWY (White Lake) continuous GPS station in Yellowstone National Park. The white box contains the receiver, while the barrel on the ground contains batteries. The tower holds the solar panels, as well as a cellular modem and meteorological sensors that were recently
Just some of the hats collected by the Yellowstone National Park Geology Program from sensitive thermal areas throughout the park in 2025. National Park Service photo by Margery Price, September 3, 2025.
Just some of the hats collected by the Yellowstone National Park Geology Program from sensitive thermal areas throughout the park in 2025. National Park Service photo by Margery Price, September 3, 2025.
View of Kaluapele (Kīlauea's summit caldera) from the B1 webcam on August 29, 2025, acquired between lava fountaining episodes 31 and 32.
View of Kaluapele (Kīlauea's summit caldera) from the B1 webcam on August 29, 2025, acquired between lava fountaining episodes 31 and 32.
Yellowstone National Park Geology Program team member Mara Reed uses a long grabber pole to remove a park map, presumably blown from a visitor's hand or pack by the wind, from a feature in Upper Mammoth Terraces. National Park Service photo by Samantha Hilburn, August 2025.
Yellowstone National Park Geology Program team member Mara Reed uses a long grabber pole to remove a park map, presumably blown from a visitor's hand or pack by the wind, from a feature in Upper Mammoth Terraces. National Park Service photo by Samantha Hilburn, August 2025.
Yellowstone National Park Geology Program volunteer Tara Cross smiles and shows off a pizza box found on Geyser Hill in Upper Geyser Basin. National Park Service photo by Margery Price, August 2025.
Yellowstone National Park Geology Program volunteer Tara Cross smiles and shows off a pizza box found on Geyser Hill in Upper Geyser Basin. National Park Service photo by Margery Price, August 2025.
Grand Prismatic Spring is the largest hot spring in the US, and one of the largest in the world. The boiling lake was named for the spectacular array of colors along its rim.
Grand Prismatic Spring is the largest hot spring in the US, and one of the largest in the world. The boiling lake was named for the spectacular array of colors along its rim.
This video, recorded by a webcam, shows a small eruption from Black Diamond Pool in the Biscuit Basin subbasin of Upper Geyser Basin, Yellowstone National Park, at 8:39 p.m. MDT on May 31, 2025. The pool was the site of a hydrothermal explosion on July 23, 2024.
This video, recorded by a webcam, shows a small eruption from Black Diamond Pool in the Biscuit Basin subbasin of Upper Geyser Basin, Yellowstone National Park, at 8:39 p.m. MDT on May 31, 2025. The pool was the site of a hydrothermal explosion on July 23, 2024.
This presentation by Dr. Jake Lowenstern was prepared for the AGU 2024-2025 Distinguished Lecture Series. It discusses the challenges of volcano monitoring, eruption forecasting, and protecting vulnerable populations.
This presentation by Dr. Jake Lowenstern was prepared for the AGU 2024-2025 Distinguished Lecture Series. It discusses the challenges of volcano monitoring, eruption forecasting, and protecting vulnerable populations.
Let’s get you caught up on what we’ve learned about the July 23, 2024, hydrothermal explosion in Biscuit Basin, in this Yellowstone Volcano Observatory Monthly Update for October 2024.
Read Caldera Chronicles
Let’s get you caught up on what we’ve learned about the July 23, 2024, hydrothermal explosion in Biscuit Basin, in this Yellowstone Volcano Observatory Monthly Update for October 2024.
Read Caldera Chronicles
In this month's video, we update you on the Biscuit Basin explosion on July 23, 2024, and discuss the 65th anniversary of the M7.3 Hegben Lake earthquake.
In this month's video, we update you on the Biscuit Basin explosion on July 23, 2024, and discuss the 65th anniversary of the M7.3 Hegben Lake earthquake.
Volcanic ash in Kansas? It's true there's thick deposits there, but where are the source volcanoes? Geologists began puzzling over this in the late 1800s when these deposits were first recognized.
Volcanic ash in Kansas? It's true there's thick deposits there, but where are the source volcanoes? Geologists began puzzling over this in the late 1800s when these deposits were first recognized.
The camera view is north-northwest from the Biscuit Basin boardwalk looking at Black Diamond Pool, which is in the foreground (the tilted viewing angle is due to the slope of the boardwalk).
The camera view is north-northwest from the Biscuit Basin boardwalk looking at Black Diamond Pool, which is in the foreground (the tilted viewing angle is due to the slope of the boardwalk).
This static image is from a USGS Cascades Volcano Observatory research camera located at the Johnston Ridge Observatory, north of Mount St. Helens. The view is to the south. This camera is intended to assist the USGS with situational awareness. At times, clouds, rain, and snow obscure visibility.
This static image is from a USGS Cascades Volcano Observatory research camera located at the Johnston Ridge Observatory, north of Mount St. Helens. The view is to the south. This camera is intended to assist the USGS with situational awareness. At times, clouds, rain, and snow obscure visibility.
Live view of the northwest flank of Mauna Loa; the view is from the southeast flank of Hualālai [HLcam]. This camera is a pan-tilt-zoom model and the view may change depending on activity.
Live view of the northwest flank of Mauna Loa; the view is from the southeast flank of Hualālai [HLcam]. This camera is a pan-tilt-zoom model and the view may change depending on activity.