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Seismic activity declined last weekend prompting AVO to downgrade the Level of Concern Color Code to Yellow on Sunday, December 15. NWS personnel in Cold Bay had a clear view of the volcano Sunday morning and reported no steam or ash issuing from the summit vents and no other signs of activity. Inclement weather has prevented observations for the remainder of the week. Seismic activity remains low. Eruptions of Pavlof are characterized by periods of lava fountaining and associated lava flows (strombolian activity) interspersed with periods of diminished activity. Renewed lava fountaining and production of local diffuse ash clouds could begin again with little seismic warning. AVO will continue to monitor the volcano closely and issue further updates as the situation changes.
Pavlof is located 600 miles southwest of Anchorage. The nearest towns to the volcano are Cold Bay (37 mi SW), King Cove (30 mi SW), Sand Point (60 mi E), and Nelson Lagoon (50 mi NE). AVO has a seismic network of six stations near the volcano.
Seismic activity is monitored in real time at the
following volcanoes. Some of the volcanoes listed below
may have anomalous seismicity, as noted, but are not
considered to be at a potentially dangerous level of
The seismic swarm that began on 1 August 1996 beneath
Iliamna Volcano continued during the past week at an
average rate of 5 earthquakes per day.
Spurr, Redoubt, Augustine, Griggs, Katmai, Trident,
Mageik, Martin, Dutton, Akutan, and Makushin volcanoes are
all at or near normal levels of seismicity.
AVO maintains a computerized alarm system capable of
notifying AVO seismologists during non-business hours
should unusual seismic activity occur at monitored Alaskan