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AVO VOLCANO ACTIVITY NOTIFICATION
(1) VOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)
(2) Issued: (20140625/1835Z)
(3) Volcano: Pavlof (VNUM #312030)
(4) Current Color Code: YELLOW
(5) Previous Color Code: ORANGE
(6) Source: Alaska Volcano Observatory
(7) Notice Number: 2014/A10
(8) Volcano Location: N 55 deg 25 min W 161 deg 53 min
(9) Area: Alaska Peninsula
(10) Summit Elevation: 8261 ft (2518 m)
(11) Volcanic Activity Summary: Eruptive activity at Pavlof Volcano appears to have ceased. Clear web camera and satellite images over the past several days have shown no evidence of continued lava fountaining from the summit. Only weakly elevated surface temperatures in the vicinity of recent lava flows northeast of the summit have been recorded. AVO has observed no evidence of ash emission from the volcano since early June.

Consequently, the Aviation Color Code is being reduced to Yellow and the Volcano Alert Level to Advisory.

Despite this apparent quiet, small discrete seismic events continue. These signals may be related to several processes including (1) degassing of unerupted magma within the volcano’s conduit and (2) periodic collapse of ejecta and other debris down the steep flanks of the volcano.

Pavlof remains restless and an intermittent plume of steam and gas from the summit is to be expected. Renewed eruptive activity is possible and may not be preceded by significant seismicity. AVO will continue to monitor Pavlof closely.
(12) Volcanic cloud height: Nil
(13) Other volcanic cloud information: Nil
(14) Remarks: Pavlof Volcano is a snow- and ice-covered stratovolcano located on the southwestern end of the Alaska Peninsula about 953 km (592 mi) southwest of Anchorage. The volcano is about 7 km (4.4 mi) in diameter and has active vents on the north and east sides close to the summit. With over 40 historic eruptions, it is one of the most consistently active volcanoes in the Aleutian arc. Eruptive activity is generally characterized by sporadic Strombolian lava fountaining continuing for a several-month period. Ash plumes as high as 49,000 ft ASL have been generated by past eruptions of Pavlof, and during the 2013 eruption, ash plumes as high as 27,000 feet above sea level extending as much as 500 km (310 mi) beyond the volcano were generated. The nearest community, Cold Bay, is located 60 km (37 miles) to the southwest of Pavlof.
(15) Contacts: John Power, Scientist-in-Charge, USGS
jpower@usgs.gov (907) 786-7497

Jeff Freymeuller, Coordinating Scientist, UAFGI
jeff.freymueller@gi.alaska.edu (907) 322-4085
(16) Next Notice: A new VAN will be issued if conditions change significantly or alert levels are modified. While a VAN is in effect, regularly scheduled updates are posted at
http://www.avo.alaska.edu
Contact AVO Privacy Accessibility Information Quality FOIA
URL: www2.avo.alaska.edu/activity/report.php
Page modified: June 21, 2016 14:47
Contact Information: AVO Web Team

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