Guest Videos: Veniaminof Volcano in Alaska


Update, January 11, 2019: Per the AVO:

VENIAMINOF VOLCANO (VNUM #312070)
56°11’52” N 159°23’35” W, Summit Elevation 8225 ft (2507 m)
Current Volcano Alert Level: ADVISORY
Current Aviation Color Code: YELLOW

The eruption of Veniaminof has paused or stopped. Slightly elevated surface temperatures were observed in satellite data throughout the week when conditions allowed, which is consistent with the cooling of lava emplaced in December. Weak steam emissions could be seen in occasional web camera views. Seismic events (low-amplitude tremor and discrete events) indicative of unrest continue. Pauses in eruptive activity are common at Veniaminof and lava effusion and/or ash emissions could resume at any time without significant seismic precursors.

Mount Veniaminof volcano is an andesitic stratovolcano with an ice-filled 10-km diameter summit caldera located on the Alaska Peninsula, 775 km (480 mi) southwest of Anchorage and 35 km (22 mi) north of Perryville. Veniaminof is one of the largest (~300 cubic km; 77 cubic mi) and most active volcanic centers in the Aleutian Arc and has erupted at least 13 times in the past 200 years. Recent significant eruptions of the volcano occurred in 1993-95, 2005, and 2013. These were Strombolian eruptions that produced lava fountains and minor emissions of ash and gas from the main intracaldera cone. During the 1993-95 activity, a small lava flow was extruded, and in 2013, five small lava flows effused from the intracaldera cone over about five months. Minor ash-producing explosions occurred nearly annually between 2002 and 2010. Previous historical eruptions have produced ash plumes that reached 20,000 ft above sea level (1939 and 1956) and ash fallout that blanketed areas within about 40 km (25 mi) of the volcano (1939).


Update, December 12, 2018: Over the past week, AVO reports changes in the tremor signal (this volcano is very difficult to observe directly). See their Veniaminof page for details. It’s possible that the eruption of lava has paused, they say.


Update, November 21, 2018, 12:06 p.m., Pacific:

AVO/USGS Volcanic Activity Notice

Volcano: Veniaminof (VNUM #312070)

Current Volcano Alert Level: WARNING
Previous Volcano Alert Level: WATCH

Current Aviation Color Code: RED
Previous Aviation Color Code: ORANGE

Issued: Wednesday, November 21, 2018, 10:15 AM AKST
Source: Alaska Volcano Observatory
Notice Number:
Location: N 56 deg 11 min W 159 deg 23 min
Elevation: 8225 ft (2507 m)
Area: Alaska Peninsula

Volcanic Activity Summary: Overnight, ash emissions from Veniaminof increased significantly, generating a plume up to 15,000 ft asl and extending for more than 150 miles to the SE. This morning observers in Perryville and webcam views indicated continuous ash emissions. This activity is a significant increase from the past month and AVO is raising the Aviation Color Code to Red and the Volcano Alert Level to Warning.

A SIGMET warning for aviation has been issued by the National Weather Service. Please reference https://www.weather.gov/aawu/sigmets for updated guidance on airborne ash hazards.

Recent Observations:
[Volcanic cloud height] Up to ~15,000 ft
[Other volcanic cloud information] Continuous ash emissions observed in webcam

Remarks: Ash fall is possible in nearby communities. The National Weather Service Anchorage Forecast Office will issue an advisory if this is expected to occur.
https://www.weather.gov/afc/

Contacts: Michelle Coombs, Scientist-in-Charge, USGS
mcoombs@usgs.gov (907) 786-7497

David Fee, Coordinating Scientist, UAFGI
dfee1@alaska.edu (907) 322-4085

Next Notice: A new VAN will be issued if conditions change significantly or alert levels are modified. While a VAN is in effect, regularly scheduled updates are posted at
http://www.avo.alaska.edu

The Alaska Volcano Observatory is a cooperative program of the U.S. Geological Survey, the University of Alaska Fairbanks Geophysical Institute, and the Alaska Division of Geological and Geophysical Surveys.



Original post:

https://platform.twitter.com/widgets.js

Credit later corrected to A. Eckert and Captain J. Timmreck)


https://platform.twitter.com/widgets.js

Credit later amended to note that video was captured by A. Eckert


Here’s what it looks like from space:


https://platform.twitter.com/widgets.js


And this is what Veniaminof looked like (from a distant town) when it erupted in 2013, per the National Weather Service:



More information:

Alaska Volcano Observatory:

Wikipedia page

Global Volcanism Program page


Featured image: Cyrus Read/Alaska Volcano Observatory/US Geological Survey http://www.avo.alaska.edu/images/image.php?id=128211


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