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Volcano Hazard Program images.
Comet NEOWISE is seen with the Roosevelt Arch in the foreground at the north Entrance of Yellowstone National Park. The town of Gardiner, Montana, is in the background.
Comet NEOWISE is seen with the Roosevelt Arch in the foreground at the north Entrance of Yellowstone National Park. The town of Gardiner, Montana, is in the background.
An HVO geologist collects GPS data on the western rim of Kīlauea's summit caldera. The geologist is standing upon a thick sequence of tephra deposits formed during explosive eruptions at Kīlauea's summit between about 1500 CE and the early 19th century.
An HVO geologist collects GPS data on the western rim of Kīlauea's summit caldera. The geologist is standing upon a thick sequence of tephra deposits formed during explosive eruptions at Kīlauea's summit between about 1500 CE and the early 19th century.
Panoramic photo of Hayden Valley looking east toward the Yellowstone River from the Mary Mountain trail.
Panoramic photo of Hayden Valley looking east toward the Yellowstone River from the Mary Mountain trail.
A small stream, Violet Creek, winds its way through Hayden Valley in Yellowstone National Park.
A small stream, Violet Creek, winds its way through Hayden Valley in Yellowstone National Park.
Comparison of photos from Giant and Castle Geysers separated by almost 150 years. These images suggest almost no changes to the geyser structure implying that large geysers form over thousands of years.
Comparison of photos from Giant and Castle Geysers separated by almost 150 years. These images suggest almost no changes to the geyser structure implying that large geysers form over thousands of years.
Another view of the Fissure 8 channel, looking upstream. On the right, a lower ledge along the channel wall represents the level of lava in the channel during the later stages of the flow. USGS photo by M. Patrick.
Another view of the Fissure 8 channel, looking upstream. On the right, a lower ledge along the channel wall represents the level of lava in the channel during the later stages of the flow. USGS photo by M. Patrick.
A view into the Absaroka Mountains in northeastern Yellowstone National Park. While the Absarokas of today look a little different due to glacial activity, these are the same mountains that existed over the last 53 million years, well before the arrival of the Yellowstone hot spot.
A view into the Absaroka Mountains in northeastern Yellowstone National Park. While the Absarokas of today look a little different due to glacial activity, these are the same mountains that existed over the last 53 million years, well before the arrival of the Yellowstone hot spot.
View of the recently cleared Boiling Pots on the Wailuku River in Hilo. The pots, each about 15 m (50 ft) in diameter, are eroded into a 10,000 year old Mauna Loa lava flow. When the water is low, the river does not flow over some of the pot rims but it continues to flow through them. USGS photo.
View of the recently cleared Boiling Pots on the Wailuku River in Hilo. The pots, each about 15 m (50 ft) in diameter, are eroded into a 10,000 year old Mauna Loa lava flow. When the water is low, the river does not flow over some of the pot rims but it continues to flow through them. USGS photo.
HVO geologists visited the lower East Rift Zone lava flow field this past week to make measurements and observations, to better understand and reconstruct the dynamics of the Fissure 8 lava flow. This photo shows the channel wall in the braided channel region of the flow.
HVO geologists visited the lower East Rift Zone lava flow field this past week to make measurements and observations, to better understand and reconstruct the dynamics of the Fissure 8 lava flow. This photo shows the channel wall in the braided channel region of the flow.
Hawaiian Volcano Observatory (HVO) electronics technician Steven Fuke stands near a solar panel system that powers a volcano-monitoring station.
Hawaiian Volcano Observatory (HVO) electronics technician Steven Fuke stands near a solar panel system that powers a volcano-monitoring station.
In the eastern portion of the lake, the dark brown zone had a slightly mottled appearance, but this pattern was transient and gone within about ten minutes.
In the eastern portion of the lake, the dark brown zone had a slightly mottled appearance, but this pattern was transient and gone within about ten minutes.
Geologists from Montana State University study an outcrop of diorite (a silicic igneous rock that cooled slowly beneath the ground). An outcrop of this size is important because it is easier to see any structural relations along with rock composition.
Geologists from Montana State University study an outcrop of diorite (a silicic igneous rock that cooled slowly beneath the ground). An outcrop of this size is important because it is easier to see any structural relations along with rock composition.
USGS-Cascades Volcano Observatory geophysicist Rebecca Kramer works on station PR05, which is part of the Mount Rainier lahar detection network (Mount Rainier is pictured in the distance). The purpose of the site visit was to upgrade the power system and deploy infrasound equipment.
USGS-Cascades Volcano Observatory geophysicist Rebecca Kramer works on station PR05, which is part of the Mount Rainier lahar detection network (Mount Rainier is pictured in the distance). The purpose of the site visit was to upgrade the power system and deploy infrasound equipment.
The water lake within Halema‘uma‘u crater, at the summit of Kīlauea, continues to slowly rise, with no significant changes in recent weeks. USGS photo by M. Patrick.
The water lake within Halema‘uma‘u crater, at the summit of Kīlauea, continues to slowly rise, with no significant changes in recent weeks. USGS photo by M. Patrick.
The eastern end of the lake, shown here, is slightly warmer than the lake center, and commonly has steam rising from the water surface. USGS photo by M. Patrick.
The eastern end of the lake, shown here, is slightly warmer than the lake center, and commonly has steam rising from the water surface. USGS photo by M. Patrick.
Tina Neal, HVO Scientist-in-Charge from 2015–2020 ends her tenure on June 19, 2020. USGS photo.
Tina Neal, HVO Scientist-in-Charge from 2015–2020 ends her tenure on June 19, 2020. USGS photo.
A GPS station that monitors ground deformation on Kīlauea Volcano, one of the approximately 240 volcano-monitoring stations that Steven Fuke, as part of the HVO Technician Group, designs, installs, and maintains.
A GPS station that monitors ground deformation on Kīlauea Volcano, one of the approximately 240 volcano-monitoring stations that Steven Fuke, as part of the HVO Technician Group, designs, installs, and maintains.
The May 29 overflight provided updated thermal images of Kīlauea summit, covering the caldera floor and showing the warm surface of the water lake in Halema‘uma‘u crater. No significant changes were observed in the surface temperature of Kīlauea's summit crater lake.
The May 29 overflight provided updated thermal images of Kīlauea summit, covering the caldera floor and showing the warm surface of the water lake in Halema‘uma‘u crater. No significant changes were observed in the surface temperature of Kīlauea's summit crater lake.
The May 29 overflight provided updated aerial photographs of Kīlauea summit, covering the caldera floor and showing the current size of the water lake in Halema‘uma‘u crater.
The May 29 overflight provided updated aerial photographs of Kīlauea summit, covering the caldera floor and showing the current size of the water lake in Halema‘uma‘u crater.
During today's overflight of Kīlauea summit, both thermal and visual cameras were used to characterize activity. Comparing thermal (left) to visual (right) images of nearly the same view, you can see that the growing crater lake at Kīlauea's summit remains hot.
During today's overflight of Kīlauea summit, both thermal and visual cameras were used to characterize activity. Comparing thermal (left) to visual (right) images of nearly the same view, you can see that the growing crater lake at Kīlauea's summit remains hot.
Steep walls, collapsed blocks, and rubble border Halema‘uma‘u Crater and Kīlauea's growing summit crater lake. In this photo, looking northwest, the summits of both Kīlauea (foreground) and Mauna Loa (background) are visible. USGS photos by K. Mulliken
Steep walls, collapsed blocks, and rubble border Halema‘uma‘u Crater and Kīlauea's growing summit crater lake. In this photo, looking northwest, the summits of both Kīlauea (foreground) and Mauna Loa (background) are visible. USGS photos by K. Mulliken