Newest Volcano Notice Including Martin

ALASKA VOLCANO OBSERVATORY INFORMATION STATEMENT
U.S. Geological Survey
Wednesday, January 11, 2023, 2:08 PM AKST (Wednesday, January 11, 2023, 23:08 UTC)

There has been in an increase in the number of located earthquakes beneath a broad swath of volcanoes in the Katmai region beginning in August 2022. Background seismicity in this area, which includes Mount Katmai, Trident Volcano, Mount Mageik, and Mount Martin, is usually less than 30 located earthquakes per week, although there is considerable variation. An earthquake swarm occurred beneath Trident Volcano from August to October 2022, marking the approximate start of this ongoing period of elevated earthquake activity.

While earthquake activity has been more dispersed across the Katmai region since October, it has remained relatively high. Over the past month it has increased to more than 80 located earthquakes per week. This earthquake activity could be the result of magma movement but there is no indication that an eruption is imminent, or that one will occur. Seismic swarms like this are relatively common at volcanoes and most do not lead to an eruption. There have been no other signs of unrest noted in monitoring data from the region since last August. AVO will issue additional notices of activity should the earthquakes continue or increase.

KATMAI (VNUM #312170)
58°16'44" N 154°57'12" W, Summit Elevation 6716 ft (2047 m)
Current Volcano Alert Level: NORMAL
Current Aviation Color Code: GREEN

Aviation color code and alert level remain at GREEN/NORMAL.

TRIDENT (VNUM #312160)
58°14'3" N 155°6'9" W, Summit Elevation 3599 ft (1097 m)
Current Volcano Alert Level: NORMAL
Current Aviation Color Code: GREEN

Aviation color code and alert level remain at GREEN/NORMAL.

MAGEIK (VNUM #312150)
58°11'41" N 155°15'16" W, Summit Elevation 7103 ft (2165 m)
Current Volcano Alert Level: NORMAL
Current Aviation Color Code: GREEN

Aviation color code and alert level remain at GREEN/NORMAL.  

MARTIN (VNUM #312140)
58°10'9" N 155°21'24" W, Summit Elevation 6102 ft (1860 m)
Current Volcano Alert Level: NORMAL
Current Aviation Color Code: GREEN

Aviation color code and alert level remain at GREEN/NORMAL.  

OTHER ALASKA VOLCANOES

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/

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CONTACT INFORMATION:

Dave Schneider, Acting Scientist-in-Charge, USGS djschneider@usgs.gov (907) 786-7497

David Fee, Coordinating Scientist, UAFGI dfee1@alaska.edu (907) 378-5460

 

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.