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Volcano Hazard Program images.

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Breakouts have been active recently in several locations on the coa...
Breakouts have been active recently in several locations on the coa...
Breakouts have been active recently in several locations on the coa...
Breakouts have been active recently in several locations on the coa...

Breakouts have been active recently in several locations on the coastal plain. The sluggish flows in this photo were about 1.6 km (1 mile) out from the base of the pali, with a more active patch of breakouts mauka of this location. In addition, several areas of breakouts were active very close to the shoreline and ocean entry.

Breakouts have been active recently in several locations on the coastal plain. The sluggish flows in this photo were about 1.6 km (1 mile) out from the base of the pali, with a more active patch of breakouts mauka of this location. In addition, several areas of breakouts were active very close to the shoreline and ocean entry.

San Francisco Peaks, north of Flagstaff, Arizona
San Francisco Peaks, north of Flagstaff, Arizona
San Francisco Peaks, north of Flagstaff, Arizona
San Francisco Peaks, north of Flagstaff, Arizona

San Francisco Peaks, north of Flagstaff, Arizona, viewed from the northeast. This mountain cluster is the tallest of the San Francisco Volcanic field.

San Francisco Peaks, north of Flagstaff, Arizona, viewed from the northeast. This mountain cluster is the tallest of the San Francisco Volcanic field.

Structure built by Anasazi and Singuan people north of Sunset Crate...
Structure built by Anasazi and Singuan people north of Sunset Crate...
Structure built by Anasazi and Singuan people north of Sunset Crate...
Structure built by Anasazi and Singuan people north of Sunset Crate...

Structure built by Anasazi and Singuan people north of Sunset Crater, Arizona, in Wupatki National Monument. Agriculture began here because cinder from nearby volcanoes trapped water in soil.

Structure built by Anasazi and Singuan people north of Sunset Crater, Arizona, in Wupatki National Monument. Agriculture began here because cinder from nearby volcanoes trapped water in soil.

Rime ice coats telemetry system at Mount St. Helens....
Rime ice coats telemetry system at Mount St. Helens.
Rime ice coats telemetry system at Mount St. Helens.
Rime ice coats telemetry system at Mount St. Helens.

To monitor volcanoes, scientists rely on remote monitoring equipment that can operate 24-hours a day and 365-days a year to deliver real-time data. When scientists design and install monitoring stations, they must consider the remoteness of sites, terrain, and winter conditions. Here, rime ice coats a telemetry system that transmits data near Mount St.

To monitor volcanoes, scientists rely on remote monitoring equipment that can operate 24-hours a day and 365-days a year to deliver real-time data. When scientists design and install monitoring stations, they must consider the remoteness of sites, terrain, and winter conditions. Here, rime ice coats a telemetry system that transmits data near Mount St.

Ocean entry near Kupapa‘u Point...
Ocean entry near Kupapa‘u Point
Ocean entry near Kupapa‘u Point
Ocean entry near Kupapa‘u Point

Lava continues to enter the ocean near Kupapa‘u Point, with an entry point just inside the National Park (near left side of photo) and entry points just east of the Park boundary (near the center of the photo). Widely scattered patches of surface lava are also active inland from the ocean entry points.

Lava continues to enter the ocean near Kupapa‘u Point, with an entry point just inside the National Park (near left side of photo) and entry points just east of the Park boundary (near the center of the photo). Widely scattered patches of surface lava are also active inland from the ocean entry points.

Ocean entry near Kupapa‘u Point...
Ocean entry near Kupapa‘u Point
Ocean entry near Kupapa‘u Point
Ocean entry near Kupapa‘u Point

Lava continues to enter the ocean near Kupapa‘u Point, with an entry point just inside the National Park (near left side of photo) and entry points just east of the Park boundary (near the center of the photo). Widely scattered patches of surface lava are also active inland from the ocean entry points.

Lava continues to enter the ocean near Kupapa‘u Point, with an entry point just inside the National Park (near left side of photo) and entry points just east of the Park boundary (near the center of the photo). Widely scattered patches of surface lava are also active inland from the ocean entry points.

Views of the Kahauale‘a flow, northeast of Pu‘u ‘Ō‘ō...
Views of the Kahauale‘a flow, NE of Pu‘u ‘Ō‘ō
Views of the Kahauale‘a flow, NE of Pu‘u ‘Ō‘ō
Views of the Kahauale‘a flow, NE of Pu‘u ‘Ō‘ō

The flow traveling north from Pu‘u ‘Ō‘ō, which we are informally calling the Kahauale‘a flow, abuts the edge of episode 58 flows erupted during 2007-2008. The flow has also partially surrounded one of the few vestiges of greenery within the flow field—the forested top of the old Kahauale‘a cone.

The flow traveling north from Pu‘u ‘Ō‘ō, which we are informally calling the Kahauale‘a flow, abuts the edge of episode 58 flows erupted during 2007-2008. The flow has also partially surrounded one of the few vestiges of greenery within the flow field—the forested top of the old Kahauale‘a cone.

Views of the Kahauale‘a flow, northeast of Pu‘u ‘Ō‘ō...
Views of the Kahauale‘a flow, NE of Pu‘u ‘Ō‘ō
Views of the Kahauale‘a flow, NE of Pu‘u ‘Ō‘ō
Views of the Kahauale‘a flow, NE of Pu‘u ‘Ō‘ō

The flow traveling north from Pu‘u ‘Ō‘ō, which we are informally calling the Kahauale‘a flow, abuts the edge of episode 58 flows erupted during 2007-2008. The flow has also partially surrounded one of the few vestiges of greenery within the flow field—the forested top of the old Kahauale‘a cone.

The flow traveling north from Pu‘u ‘Ō‘ō, which we are informally calling the Kahauale‘a flow, abuts the edge of episode 58 flows erupted during 2007-2008. The flow has also partially surrounded one of the few vestiges of greenery within the flow field—the forested top of the old Kahauale‘a cone.

This is a closer look at the spatter cone on the northwest side of ...
This is spatter cone on the NW side of Pu‘u ‘Ō‘ō's crater floor. Th...
This is spatter cone on the NW side of Pu‘u ‘Ō‘ō's crater floor. Th...
This is spatter cone on the NW side of Pu‘u ‘Ō‘ō's crater floor. Th...

This is a closer look at the spatter cone on the northwest side of Pu‘u ‘Ō‘ō's crater floor. The photo was taken from near the site of the webcam on the north rim of Pu‘u ‘Ō‘ō.

This is a closer look at the spatter cone on the northwest side of Pu‘u ‘Ō‘ō's crater floor. The photo was taken from near the site of the webcam on the north rim of Pu‘u ‘Ō‘ō.

This is a closer look at the spatter cone on the northwest side of ...
This is spatter cone on the NW side of Pu‘u ‘Ō‘ō's crater floor. Th...
This is spatter cone on the NW side of Pu‘u ‘Ō‘ō's crater floor. Th...
This is spatter cone on the NW side of Pu‘u ‘Ō‘ō's crater floor. Th...

This is a closer look at the spatter cone on the northwest side of Pu‘u ‘Ō‘ō's crater floor. The photo was taken from near the site of the webcam on the north rim of Pu‘u ‘Ō‘ō.

This is a closer look at the spatter cone on the northwest side of Pu‘u ‘Ō‘ō's crater floor. The photo was taken from near the site of the webcam on the north rim of Pu‘u ‘Ō‘ō.

Spatter cone on northwest side of Pu‘u ‘Ō‘ō's crater floor...
Spatter cone on NW side of Pu‘u ‘Ō‘ō's crater floor
Spatter cone on NW side of Pu‘u ‘Ō‘ō's crater floor
Spatter cone on NW side of Pu‘u ‘Ō‘ō's crater floor

There are currently four spatter cones on the floor of the Pu‘u ‘Ō‘ō crater that have been the source of lava flows over the past several months. The one shown here is on the northwest side of the crater floor, close to the multiframe webcam shown on our website. The webcam, and an HVO geologist standing next to it, give a sense of scale for the spatter cone.

There are currently four spatter cones on the floor of the Pu‘u ‘Ō‘ō crater that have been the source of lava flows over the past several months. The one shown here is on the northwest side of the crater floor, close to the multiframe webcam shown on our website. The webcam, and an HVO geologist standing next to it, give a sense of scale for the spatter cone.

Spatter cone on northwest side of Pu‘u ‘Ō‘ō's crater floor...
Spatter cone on NW side of Pu‘u ‘Ō‘ō's crater floor
Spatter cone on NW side of Pu‘u ‘Ō‘ō's crater floor
Spatter cone on NW side of Pu‘u ‘Ō‘ō's crater floor

There are currently four spatter cones on the floor of the Pu‘u ‘Ō‘ō crater that have been the source of lava flows over the past several months. The one shown here is on the northwest side of the crater floor, close to the multiframe webcam shown on our website. The webcam, and an HVO geologist standing next to it, give a sense of scale for the spatter cone.

There are currently four spatter cones on the floor of the Pu‘u ‘Ō‘ō crater that have been the source of lava flows over the past several months. The one shown here is on the northwest side of the crater floor, close to the multiframe webcam shown on our website. The webcam, and an HVO geologist standing next to it, give a sense of scale for the spatter cone.

This is a steep aerial view of the small lava pond at the top of th...
This is a steep the small lava pond at the top of the spatter cone ...
This is a steep the small lava pond at the top of the spatter cone ...
This is a steep the small lava pond at the top of the spatter cone ...

This is a steep aerial view of the small lava pond at the top of the spatter cone on the northeastern side of the crater floor. Lava in the pond flows directly into a lava tube which is supplying the active flow northeast of Pu‘u ‘Ō‘ō. The head of the tube, marked by fume, extends from the pond toward the left side of the photo.

This is a steep aerial view of the small lava pond at the top of the spatter cone on the northeastern side of the crater floor. Lava in the pond flows directly into a lava tube which is supplying the active flow northeast of Pu‘u ‘Ō‘ō. The head of the tube, marked by fume, extends from the pond toward the left side of the photo.

This is a steep aerial view of the small lava pond at the top of th...
This is a steep the small lava pond at the top of the spatter cone ...
This is a steep the small lava pond at the top of the spatter cone ...
This is a steep the small lava pond at the top of the spatter cone ...

This is a steep aerial view of the small lava pond at the top of the spatter cone on the northeastern side of the crater floor. Lava in the pond flows directly into a lava tube which is supplying the active flow northeast of Pu‘u ‘Ō‘ō. The head of the tube, marked by fume, extends from the pond toward the left side of the photo.

This is a steep aerial view of the small lava pond at the top of the spatter cone on the northeastern side of the crater floor. Lava in the pond flows directly into a lava tube which is supplying the active flow northeast of Pu‘u ‘Ō‘ō. The head of the tube, marked by fume, extends from the pond toward the left side of the photo.

Spatter cone on northeast side of Pu‘u ‘Ō‘ō's crater floor...
Spatter cone on NE side of Pu‘u ‘Ō‘ō's crater floor
Spatter cone on NE side of Pu‘u ‘Ō‘ō's crater floor
Spatter cone on NE side of Pu‘u ‘Ō‘ō's crater floor

This is another of the spatter cones on the floor of Pu‘u ‘Ō‘ō. This one, on the northeast side of the crater floor, has long had an open top with a view of a small lava lake.

This is another of the spatter cones on the floor of Pu‘u ‘Ō‘ō. This one, on the northeast side of the crater floor, has long had an open top with a view of a small lava lake.

Spatter cone on northeast side of Pu‘u ‘Ō‘ō's crater floor...
Spatter cone on NE side of Pu‘u ‘Ō‘ō's crater floor
Spatter cone on NE side of Pu‘u ‘Ō‘ō's crater floor
Spatter cone on NE side of Pu‘u ‘Ō‘ō's crater floor

This is another of the spatter cones on the floor of Pu‘u ‘Ō‘ō. This one, on the northeast side of the crater floor, has long had an open top with a view of a small lava lake.

This is another of the spatter cones on the floor of Pu‘u ‘Ō‘ō. This one, on the northeast side of the crater floor, has long had an open top with a view of a small lava lake.

Recently emplaced flows on Pu‘u ‘Ō‘ō's spillway...
Recently emplaced flows on Pu‘u ‘Ō‘ō's spillway
Recently emplaced flows on Pu‘u ‘Ō‘ō's spillway
Recently emplaced flows on Pu‘u ‘Ō‘ō's spillway

The "spillway"—Pu‘u ‘Ō‘ō's eastern flank—has been buried by flows fed mostly from a spatter cone on the northeastern side of the crater floor. Most of the dark-colored lava in the foreground is new lava that has resurfaced the spillway. The fume to the left is the trace of the Peace Day tube, newly covered by crater overflows, currently carrying lava to the coast.

The "spillway"—Pu‘u ‘Ō‘ō's eastern flank—has been buried by flows fed mostly from a spatter cone on the northeastern side of the crater floor. Most of the dark-colored lava in the foreground is new lava that has resurfaced the spillway. The fume to the left is the trace of the Peace Day tube, newly covered by crater overflows, currently carrying lava to the coast.

Image: Halema'uma'u Crater, Kilauea Volcano Summit Eruption 2013
Halema'uma'u Crater, Kilauea Volcano Summit Eruption 2013
Halema'uma'u Crater, Kilauea Volcano Summit Eruption 2013
Halema'uma'u Crater, Kilauea Volcano Summit Eruption 2013

Kīlauea Volcano's summit vent within Halema‘uma‘u Crater was more than 500 feet across in March 2013, five years after it opened.

Kīlauea Volcano's summit vent within Halema‘uma‘u Crater was more than 500 feet across in March 2013, five years after it opened.

Ocean entry near Kupapa‘u Point...
Ocean entry near Kupapa‘u Point
Ocean entry near Kupapa‘u Point
Ocean entry near Kupapa‘u Point

Lava continues to enter the ocean near Kupapa‘u Point, with an entry point just inside the National Park (near left side of photo) and entry points just east of the Park boundary (near the center of the photo). Widely scattered patches of surface lava are also active inland from the ocean entry points.

Lava continues to enter the ocean near Kupapa‘u Point, with an entry point just inside the National Park (near left side of photo) and entry points just east of the Park boundary (near the center of the photo). Widely scattered patches of surface lava are also active inland from the ocean entry points.

This is a view of the front of the Kahauale‘a flow looking back tow...
front of the Kahauale‘a flow looking back toward Pu‘u ‘Ō‘ō
front of the Kahauale‘a flow looking back toward Pu‘u ‘Ō‘ō
front of the Kahauale‘a flow looking back toward Pu‘u ‘Ō‘ō

This is a view of the front of the Kahauale‘a flow looking back toward Pu‘u ‘Ō‘ō, where the flow originates.

This is a view of the front of the Kahauale‘a flow looking back toward Pu‘u ‘Ō‘ō, where the flow originates.

Views of the Kahauale‘a flow, northeast of Pu‘u ‘Ō‘ō...
Views of the Kahauale‘a flow, NE of Pu‘u ‘Ō‘ō
Views of the Kahauale‘a flow, NE of Pu‘u ‘Ō‘ō
Views of the Kahauale‘a flow, NE of Pu‘u ‘Ō‘ō

The flow traveling north from Pu‘u ‘Ō‘ō, which we are informally calling the Kahauale‘a flow, abuts the edge of episode 58 flows erupted during 2007-2008. The flow has also partially surrounded one of the few vestiges of greenery within the flow field—the forested top of the old Kahauale‘a cone.

The flow traveling north from Pu‘u ‘Ō‘ō, which we are informally calling the Kahauale‘a flow, abuts the edge of episode 58 flows erupted during 2007-2008. The flow has also partially surrounded one of the few vestiges of greenery within the flow field—the forested top of the old Kahauale‘a cone.