Alaska Volcano Observatory Image Database

AVO IMAGE DATABASE

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Caption:	Airphoto of Okmok taken by pilot Burke Mees, April 28, 2021.
Date:	April 28, 2021 12:00 AM
Photographer:	Mees, Burke

Okmok

Caldera/crater, Volcano

Caption:	Oblique airphoto of Okmok, taken by pilot Burke Mees on April 28, 2021.
Date:	April 28, 2021 12:00 AM
Photographer:	Mees, Burke

Okmok

Caldera/crater, Volcano

Caption:	Mt. Cleveland steaming on April 24, 2021, around 12:30 AKST, taken by Alaska Air pilot Eric Greener.
Date:	April 24, 2021 12:30 PM
Photographer:	Greener, Eric

Cleveland

Steam, Volcano

Caption:	An ash plume extends from the north crater of Mount Cerberus to the south in a Planet image from April 22, 2021. Gray ash deposits are visible on the island, particularly on the south flank of Mount Cerberus, from frequent ash emissions over the past week.
Date:	April 22, 2021 10:12 PM
Photographer:	Dietterich, Hannah

Semisopochnoi

Caption:	Ash emissions could be seen drifting to the south starting around 02:00 UTC in geostationary satellite views. Ash plume is currently extending a bit beyond Amchitka Island (approximately 70 km) and appears to be following a trajectory at around 10,000 ft a.m.s.l. Meterological clouds are at 7,000 ft a.m.s.l.
Date:	April 22, 2021 12:00 AM
Photographer:	Schwaiger, Hans

Semisopochnoi

Eruption cloud/ plume/ column

Caption:	Animated gif (download "full res" image to view) of Himawari-8 satellite views of Semisopochnoi's eruptive plume, midnight April 16, 2021 through 16:00 April 16, 2021, UTC time. In the animation, you can see the ash as a purplish gray-colored plume first being carried southeast from Semisopochnoi (island in near-center of the field of view), and, as the wind direction changes and regional clouds move in, the ash plume arcs and travels northwest from Semisopochnoi. This false-color scale combines different wavelengths of infrared light to highlight volcanic clouds relative to meteorological clouds (the green and red clouds) and the background ocean (blue) in day or night viewing conditions. The lower Semisopochnoi plume is periodically obscured by higher meteorological clouds passing above the plume. Animation available at : https://rammb-slider.cira.colostate.edu/
Date:	April 16, 2021 12:00 AM
Photographer:	CIRA at Colorado State University, ; RAMMB NOAA NESDIS office, ; Dietterich, Hannah

Semisopochnoi

Eruption cloud/ plume/ column

Caption:	Sentinel-3 image captures eruptive plumes from Semisopochnoi volcano drifting southeast from the volcano. The continuous eruption has produced a plume extending >330 km from the vent.
Date:	April 15, 2021 10:08 PM
Photographer:	Dietterich, Hannah

Semisopochnoi

Caption:	Sentinel-3 image captures an eruptive plume from Semisopochnoi volcano drifting southeast and extending >330 km from the vent.
Date:	April 15, 2021 10:08 PM
Photographer:	Dietterich, Hannah

Semisopochnoi

Caption:	Animation of FAA Perryville NW webcam images showing ash plumes from Veniaminof, April 5, 2021.
Date:	April 5, 2021 12:00 AM
Photographer:	Dietterich, Hannah; Perryville NW FAA webcam,

Veniaminof

Eruption cloud/ plume/ column, Volcano

Caption:	Small eruption plume on Semisopochnoi on April 1, 2021, originating from North Cerberus crater beneath the clouds. Plume appears ash-rich. No widely dispersed ash-signature was detected in later satellite data, however, an SO2 plume was detected a little over an hour later to the northeast.
Date:	April 1, 2021 11:33 PM
Photographer:	Loewen, Matt

Array

Eruption cloud/ plume/ column

Caption:	Satellite image (Planet) of Veniaminof on April 1, 2021. No ash emissions are apparent from the summit cone and steaming or lava effusion are not noted within an ice cauldron on the cone's east flank.
Date:	April 1, 2021 5:53 PM
Photographer:	Loewen, Matt

Veniaminof

Caption:	Worldview-3 near-IR satellite image of the Veniaminof eruption on March 24, 2021. Tephra deposits and an active ash plume are visible to the east of the summit cone. The 2018 lava flow field is visible south of the cone, while the 2021 lava flow ice cauldron is mostly obscured by the plume.
Date:	March 24, 2021 10:17 PM
Photographer:	Loewen, Matt

Veniaminof

Eruption cloud/ plume/ column, Tephra

Caption:	Planet near-IR false color satellite image of Semisopochnoi on March 24, 2021. A possible ESE ash deposit is visible on the snow and vegetation from North Cerberus crater and extending over 8 km to the coastline, along with a plume extending off the image and obscuring views into the crater.
Date:	March 24, 2021 10:13 PM
Photographer:	Loewen, Matt

Semisopochnoi

Eruption cloud/ plume/ column, Tephra

Caption:	Booming sounds at Veniaminof Volcano, Alaska
Date:	March 24, 2021 12:00 AM
Photographer:	waythomas, chris

Veniaminof

Caption:	Video of infrasound spectrogram (top) and data (bottom), from the eruption of Mount Veniaminof on 24 March 2021, as recorded on a station at Chignik Lagoon. The soundtrack was derived from the infrasound datastream by mapping the subaudible infrasound signal into the range of human hearing. In this track of 1 hr of data, you can hear numerous short-duration explosions that repeat every 30-60 seconds. These explosions also produced audible sounds heard in local communities. Video created by David Fee and Liam Toney, UAFGI/AVO
Date:	March 24, 2021 12:00 AM
Photographer:	Fee, David; Toney, Liam

Veniaminof

Caption:	Incandescence seen at Mount Veniaminof from Perryville. Photo by Ryan O'Domin, March 23, 2021 about 10:00pm. Ryan also reported seeing lightning "near the south side of the cone" a few minutes prior to this photo.
Date:	March 23, 2021 10:00 PM
Photographer:	O'Domin, Ryan

Veniaminof

Caldera/crater, Volcano