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AVO VOLCANO ACTIVITY NOTIFICATION
(1) VOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)
(2) Issued: (20160728/1955Z)
(3) Volcano: Pavlof (VNUM #312030)
(4) Current Color Code: ORANGE
(5) Previous Color Code: YELLOW
(6) Source: Alaska Volcano Observatory
(7) Notice Number: 2016/A82
(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: Low-level eruptive activity observed in web camera and satellite images of Pavlof. Vigorous, steam-rich degassing was observed in web camera images this morning. Recent satellite images and a pilot report provide evidence of minor ash emissions associated with the degassing. Seismic tremor continues at amplitudes similar to the previous several days. This unrest prompts AVO to raise the Aviation Color Code to ORANGE and the Volcano Alert Level to WATCH.

Activity is currently at relatively low levels. An increase in eruptive activity is possible and could occur with little or no warning. AVO will continue to monitor the volcano closely.
(12) Volcanic cloud height: Maximum altitude currently below 15,000 ft msl
(13) Other volcanic cloud information: Mixture of steam and ash. Satellite discrimination of ash and PIREP of steam/ash.
(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 March 2016 eruption, ash plumes as high as 40,000 feet above sea level were generated and the ash was tracked in satellite data as distant as eastern Canada. The nearest community, Cold Bay, is located 60 km (37 miles) to the southwest of Pavlof.
(15) Contacts: John Paskievitch, Acting Scientist-in-Charge, USGS
jpaskie@usgs.gov (907) 786-7497

Jeff Freymueller, Coordinating Scientist, UAFGI
jfreymueller@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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