AVO Logo
Site Map | FAQ |
Alaska Volcano Observatory
Summary | Color Code Definitions | Webcams | Webicorders | RSAM | Activity Notifications | Notification Search | Great Sitkin | Shishaldin | Trident 
You are here: Home > Current Volcanic Activity


U.S. Geological Survey
Wednesday, August 30, 2017, 6:29 AM AKDT (Wednesday, August 30, 2017, 14:29 UTC)

53°55'38" N 168°2'4" W, Summit Elevation 492 ft (150 m)
Current Volcano Alert Level: WATCH
Current Aviation Color Code: ORANGE

An explosive eruption of Bogoslof volcano occurred this morning beginning at 04:05 AKDT (12:05 UTC) and continued intermittently until about 05:55 AKDT (13:55 UTC). The eruption produced a low-level volcanic cloud that was observed in satellite data and produced at least one lightning strike. The cloud reached to about 20,000 feet above sea level and moved south, then dissipated over the southern Bering Sea - North Pacific Ocean area. AVO has received no reports of ash fallout. At this time, explosive eruptive activity has ended and the volcano, although quite restless, does not appear to be vigorously erupting. Since about 05:55 AKDT (13:55 UTC), seismicity and infrasound as detected on neighboring islands has been quiet and no additional lightning has been detected.

The National Weather Service Alaska Aviation Weather Unit issued a SIGMET for this eruption. Status of the ash cloud forecast can be found at the AAWU website at http://aawu.arh.noaa.gov/.

Bogoslof volcano remains at a heightened state of unrest and in an unpredictable condition. Additional explosions producing high-altitude volcanic clouds could occur at any time. Low-level explosive activity that is below our ability to detect in our data sources may be occurring. These low-level explosions could pose a hazard in the immediate vicinity of the volcano.


Information on all Alaska volcanoes is available at : http://www.avo.alaska.edu.

For definitions of Aviation Color Codes and Volcano Alert Levels, see: http://www.avo.alaska.edu/color_codes.php

SUBSCRIBE TO VOLCANO ALERT MESSAGES by email: http://volcanoes.usgs.gov/vns/

FOLLOW AVO ON FACEBOOK: https://facebook.com/alaska.avo

FOLLOW AVO ON TWITTER: https://twitter.com/alaska_avo


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

Jeff Freymueller, Coordinating Scientist, UAFGI
jfreymueller@alaska.edu (907) 322-4085

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.
Contact AVO Privacy Accessibility Information Quality FOIA
URL: avo.alaska.edu/activity/report.php
Page modified: December 2, 2016 10:12
Contact Information: AVO Web Team

twitter @alaska_avo
facebook alaska.avo
email Receive volcano updates by email: USGS VNS

This website is supported by the U.S. Geological Survey under Cooperative Agreement Grant G22AC00137

Mention of trade names or commercial products does not constitute their endorsement by the U.S. Geological Survey.