Makushin volcano, Aleutian Islands: news & activity updates

The Alaskan Volcano Observatory (AVO) report that the small earthquakes which began on June 15 continues. These earthquakes are located southeast of the summit. No activity was observed in cloudy satellite and web camera imagery. Read allAVO reported that small earthquakes in an area about 10 km E of the Makushin's summit and at a depth of about 8 km continued to be detected during 15-21 July. Since the onset of seismicity on 15 June, the earthquakes had generally decreased in both size and rate. No surficial activity was visible in satellite or webcam images; only typical minor steaming from the summit crater lake. Read allThe Alaska Volcano Observatory (AVO) reported that the seismicity continues at fluctuating levels since 24 June. This is associated with two earthquakes on 28 June with magnitude M 3.0 and 3.8 at 16:53 and 18:02 local time. All of the earthquakes are clustered about 10 km (6 miles) east of the summit of the volcano at a depth of about 8 km (5 miles). The largest earthquakes have been felt strongly by residents of Unalaska. Read allAVO reported continuing numerous smaller earthquakes in an area about 10 km E of the Makushin's summit at a depth of about 8 km during 24-30 June; the frequency and magnitude had been declining since 15 June but the rate became variable on 24 June. No surficial activity was visible in satellite or webcam images; only typical minor steaming from summit crater lake. Earthquakes with a M 3 and M 3.8 were recorded at 1653 and 1802 on 28 June, with the larger event strongly felt in Unalaska (14 km E). Read allThe Alaska Volcano Observatory (AVO) reported that the activity of the volcano continues at low levels over the past days. Read allAVO reported that numerous smaller earthquakes in an area about 12 km SE of Makushin's summit were recorded after two events greater than M 4 occurred on 15 June. The earthquake activity continued during 16-23 June, though at a declining rate and magnitudes. No surficial activity was visible in satellite or webcam images; only typical minor steaming from summit fumaroles was visible. Read allThe Alaska Volcano Observatory has raised the Alert Level and Aviation Color Code to ADVISORY/YELLOW due to an earthquake swarm that began a few hours ago with a M4.5 shock, soon followed by a M4.1 event. Both have been reported felt in Dutch Harbor/Unalaska. AVO reported that over a period of several hours on 15 June there were two earthquakes in the vicinity of Makushin that were greater than M 4 and one greater than M 3. The events were located about 11 km SE of the summit at a depth of about 8 km, and felt in Unalaska (14 km E). Numerous smaller earthquakes were recorded, though not felt by Unalaska residents. Read all