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AVO VOLCANO ACTIVITY NOTIFICATION
(1) VOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)
(2) Issued: (20160617/1901Z)
(3) Volcano: Pavlof (VNUM #312030)
(4) Current Color Code: GREEN
(5) Previous Color Code: YELLOW
(6) Source: Alaska Volcano Observatory
(7) Notice Number: 2016/A13
(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: Pavlof Volcano has returned to its normal background state following a short eruptive period in mid May. Minor ash emissions were last observed on May 16, and since then the volcano has gradually returned to a quiescent status and now shows no signs of unrest. Seismic activity has returned to background levels and nothing unusual has been observed in satellite and web camera data since mid May. Consequently, AVO is lowering the Aviation Color Code to GREEN and the Volcano Alert Level to NORMAL.

Pauses in eruptive activity lasting for weeks to months have occurred during past eruptive episodes of Pavlof Volcano. A return to robust eruptive activity remains an ongoing possibility and could occur with little or no signs of impending unrest. AVO will continue to monitor the volcano closely and planned field visits to the volcano over the next several months will restore equipment damaged by the May eruption to full operational capacity.

(12) Volcanic cloud height: Unknown
(13) Other volcanic cloud information: Unknown
(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
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

AVO/USGS Volcanic Activity Notice

Volcano: Pavlof (VNUM #312030)

Current Volcano Alert Level: NORMAL
Previous Volcano Alert Level: ADVISORY

Current Aviation Color Code: GREEN
Previous Aviation Color Code: YELLOW

Issued: Friday, June 17, 2016, 11:01 AM AKDT
Source: Alaska Volcano Observatory
Notice Number: 2016/A13
Location: N 55 deg 25 min W 161 deg 53 min
Elevation: 8261 ft (2518 m)
Area: Alaska Peninsula

Volcanic Activity Summary: Pavlof Volcano has returned to its normal background state following a short eruptive period in mid May. Minor ash emissions were last observed on May 16, and since then the volcano has gradually returned to a quiescent status and now shows no signs of unrest. Seismic activity has returned to background levels and nothing unusual has been observed in satellite and web camera data since mid May. Consequently, AVO is lowering the Aviation Color Code to GREEN and the Volcano Alert Level to NORMAL.

Pauses in eruptive activity lasting for weeks to months have occurred during past eruptive episodes of Pavlof Volcano. A return to robust eruptive activity remains an ongoing possibility and could occur with little or no signs of impending unrest. AVO will continue to monitor the volcano closely and planned field visits to the volcano over the next several months will restore equipment damaged by the May eruption to full operational capacity.



Recent Observations:
[Volcanic cloud height] Unknown
[Other volcanic cloud information] Unknown

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.

Contacts: John Paskievitch, Acting Scientist-in-Charge, USGS
jpaskie@usgs.gov (907) 786-7497

Jeff Freymueller,Coordinating Scientist, UAFGI
jeff.freymueller@gi.alaska.edu (907) 322-4085


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: avo.alaska.edu/activity/report.php
Page modified: December 2, 2016 10:12
Contact Information: AVO Web Team

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