Level Of Concern Color Code: ORANGE
Significant seismicity near Akutan volcano continues. The rate and intensity of recorded earthquakes, although currently much lower than that recorded earlier in the week, remain well above background. Last night, AVO's seismologist in Akutan reported 4-5 felt events. Our Level of Concern Color remains ORANGE indicating an eruption is possible at any time within the next few days. Based on the frequency, number and locations of recorded earthquakes, the following scenarios are still considered possible:
AVO scientists will attempt to reach Akutan Island again today to install additional seismic instrumentation and make visual observations of the volcano. The weather continues to be poor. There have been few direct observations of Akutan volcano since Sunday. Earthquake activity was first reported by Akutan residents Sunday evening, March 10. Since then, seismicity has continued with large fluctuations in frequency and intensity.
Akutan volcano is located on west central Akutan Island in the eastern Aleutian Islands 185 km southwest of the tip of the Alaska Peninsula and 1225 km southwest of Anchorage. The communities of Unalaska and Dutch Harbor, lie 50 km to the southwest. The city of Akutan (seasonal population of 750) lies 13.5 km east of the volcano. Akutan is a stratovolcano with a 2-km-wide summit crater with an active cinder cone. It is one of the most active volcanoes in the Aleutian arc with at least 27 separate eruptive episodes documented since 1790. The volcano frequently produces low-level eruptive activity including steam and ash emission. The most recent eruptive activity--localized steam and ash emission--occurred in 1992.
AVO is closely monitoring the situation. Further updates will be issued as information becomes available. Recordings of current information are available by calling 907-786-7478. Additionally, information on the Akutan situation is available on the Internet at: http://www.avo.alaska.edu/
PLEASE CONTACT AVO IF YOU HAVE ANY QUESTIONS OR COMMENTS: Terry E.C. Keith Chris Nye AVO Scientist-in-Charge (Acting) AVO Coordinating U.S. Geological Survey Geophysical Institute 4200 University Drive University of Alaska Anchorage, AK 99508-4667 Fairbanks, AK 99775 OFF= (907) 786-7443 OFF=(907) 474-7430 FAX= (907) 786-7425 FAX=(907) 474-5618 EMAIL=TKEITH@TARDADDY.WR.USGS.GOV EMAIL= CNYE@GI.ALASKA.EDU