USGS Volcano Hazards Program Volcano Update


AVO update page and observatory web site


Eruptive activity at Pavlof continued over the past week. Persistent elevated surface temperatures consistent with lava effusion were observed in satellite images, and minor ash plumes below 20,000 were generated through most of the week and mostly drifted to the southeast. There were no reports of ash fall on local communities. On Thursday, pilots reported observing no ash emissions, and no ash was detected in satellite data; however, ash emissions could resume at any time. Web camera views have been cloudy. No plumes have been observed in recent satellite images. Refer to the NWS Alaska Aviation Weather Unit (http://aawu.arh.noaa.gov/) for updates on SIGMETs related to ash emissions. Volcanic tremor and small explosions continue to be detected on the compromised but functional local seismic network.

Technical problems temporarily disabled the real-time seismic data feeds from Pavlof Volcano on Wednesday, June 12, and were resolved within a few hours, restoring the data stream.

Pavlof volcano is located on the southwestern end of the Alaska Peninsula. Pavlof is a stratovolcano which rises to an elevation of 8262 feet. With almost 40 historic eruptions, it is one of the most consistently active volcanos in the Aleutian arc. Eruptive activity is generally characterized by sporadic strombolian fountaining continuing for a several-month period. The community of Cold Bay is located 60 km (37 miles) to the southwest of Pavlof.

Update in Common Alerting Protocol (CAP) format