Images

View into fissure 8 cone in Kīlauea Volcano's lower East Rift Zone, after lava drained away. USGS webcam image from November 4, 2018.

Volcano Awareness Month 2019 Overview images

Map of earthquakes in the Yellowstone area in 2017 that were individually located using traditional methods by University of Utah Seismograph Stations. The Maple Creek earthquake swarm, northwest of the caldera (red outline), is the second-longest-lasting ever recorded in the region. Black line shows Park boundary, and white lines are roads.

Close view of the Pohoiki boat ramp during this morning's overflight. The southern-most flow margin has not advanced significantly toward the Pohoiki boat ramp, but black sand and larger fragments from the entry areas have washed ashore to create a sand bar and beach at this site.

The USGS Hawaiian Volcano Observatory continues to closely monitor volcanoes and earthquakes on the Island of Hawai‘i. On this map, which shows earthquakes that occurred beneath the island between August 6, 2018, and November 14, 2018, the size of each circle depicts earthquake magnitude and color indicates earthquake depth, relative to mean sea level. USGS map.

Fissure 22 was active in late May near Lanipuna Gardens subdivision, which is now mostly buried by lava flows. During the later stages of Fissure 22 activity, small strombolian-style explosions built a symmetric cinder cone over the vent.

GPS time series from station NRWY, near Norris Geyser Basin in Yellowstone National Park. The three plots show how the station is moving in a north-south direction (top), east-west direction (middle), and up-down direction (bottom).

The emission of volcanic gases, including sulfur dioxide and hydrogen sulfide, is not unusual at the summit of Kīlauea. However, sulfur dioxide gas emission rates are now lower than they have been since before 1983, with about 50 tonnes/day measured at the summit of the volcano on the day of this photo (October 24).

Aerial view of the fissure 8 cone and spillway captured by Civil Air Patrol during their overflight on August 7, 2018. View is toward the south.

These two plots show summit tilt (ground deformation) and seismicity (earthquake counts) on Kīlauea Volcano between July 15 and August 5, 2018. A regular pattern emerged in which seismicity gradually increased over 1-3 days (bottom), until the caldera floor suddenly dropped several meters (yards) in a matter of seconds.

A viscous pāhoehoe flow from Kilauea Volcano, Hawaiʻi , entering the ocean near Isaac Hale Beach Park on the morning of August 5, 2018.

Left: Horseshoe-shaped crater of Mount St. Helens in 1980, formed by a landslide that removed the top of the volcano. The crater is about 2 km (1.2 mi) wide and the floor is about 600 m (1,970 ft) below the crater rim. Right: Halema'uma'u nestled in the summit crater of Kīlauea Volcano on August 1, the day before the last collapse event.

Are you ready for an eruption? Mount Baker dominates the skyline of northwestern Washington and southwestern British Columbia. Glacier Peak is mostly hidden from view. Both volcanoes have erupted in recent centuries and will erupt again, disrupting the landscape and the lives of people downstream and downwind. Learn what to do and where to get information.

Mount Rainier is much more than a mountain in the sky. Constructed of hundreds of lava flows, and capped by as much glacier ice as all other Cascade volcanoes combined, Rainier's steep rubbly slopes and abundant water make it prone to landslides and lahars, especially during eruptions. Are you ready for an eruption?

The inferred rupture area (white dashed line) of the May 4, 2018, magnitude-6.9 earthquake, with its foreshocks and first 10 days of aftershocks, spans an area of about 800 sq km (300 sq mi). Circle size indicates earthquake magnitude; color indicates earthquake depth. Magnitudes for some of the larger events are labeled.

GPS station P361, on Sawtell Peak, on a nice clear day. Electrical storms destroyed multiple antennas, including the GPS antenna--here under a protective plastic dome--and three communications antennas on the tower. Data from P361, along with data from other stations in the Yellowstone region, are sent to UNAVCO for free and open distribution.

UNAVCO field engineer Dylan Cembalski replaces damaged antennas on the communications tower at Sawtell Peak. The tower is shared by multiple groups that use this regional high point to relay data. (UNAVCO Photo by Summer Rhoades)

This comparison shows satellite images of Leilani Estates subdivision before and after the May-August 2018 eruption. The image on the right, collected in early September 2018, shows that the eastern portion of the subdivision has been covered by lava. The Fissure 8 lava channel runs northeast, with the Fissure 8 cone at the start of the channel.

A close up comparison of the Fissure 8 area in Leilani Estates subdivision. Leilani Avenue runs right-left (east-west) through the center of the images. On the right side, the crater in the Fissure 8 cone is visible, with the Fissure 8 lava channel extending north.

Sensor (top), deformed battery/electronics package (bottom), and titanium sheath (left) following recovery from vent location A in teh Deep Hole area on the floor of Yellowstone Lake.

New thermal feature beneath the boardwalk on Geyser Hill, Upper Geyser Basin. Bo