(1) VOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)
(2) Issued:	(20160701/1944Z)
(3) Volcano:	Pavlof (VNUM #312030)
(4) Current Color Code:	YELLOW
(5) Previous Color Code:	GREEN
(6) Source:	Alaska Volcano Observatory
(7) Notice Number:	2016/A24
(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:	Seismicity at Pavlof Volcano has increased in the past 24 hours, and minor steam emissions were observed in web camera images this morning. This unrest prompts AVO to raise the Aviation Color Code to YELLOW and the Volcano Alert Level to ADVISORY. Pauses in eruptive activity lasting for weeks to months have occurred during past eruptive episodes of Pavlof Volcano, and a return to robust eruptive activity remains an ongoing possibility and could occur with little or no warning. AVO will continue to monitor the volcano closely.
(12) Volcanic cloud height:	None observed
(13) Other volcanic cloud information:	None observed
(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:	Michelle Coombs, Scientist-in-Charge, USGS mcoombs@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

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AVO/USGS Volcanic Activity Notice

Volcano: Pavlof (VNUM #312030)

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

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

Issued: Friday, July 1, 2016, 11:44 AM AKDT
Source: Alaska Volcano Observatory
Notice Number: 2016/A24
Location: N 55 deg 25 min W 161 deg 53 min
Elevation: 8261 ft (2518 m)
Area: Alaska Peninsula

Volcanic Activity Summary: Seismicity at Pavlof Volcano has increased in the past 24 hours, and minor steam emissions were observed in web camera images this morning. This unrest prompts AVO to raise the Aviation Color Code to YELLOW and the Volcano Alert Level to ADVISORY.

Pauses in eruptive activity lasting for weeks to months have occurred during past eruptive episodes of Pavlof Volcano, and a return to robust eruptive activity remains an ongoing possibility and could occur with little or no warning. AVO will continue to monitor the volcano closely.


Recent Observations:
[Volcanic cloud height] None observed
[Other volcanic cloud information] None observed

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: Michelle Coombs, Scientist-in-Charge, USGS
mcoombs@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

The Alaska Volcano Observatory is a cooperative program of the U.S. Geological Survey, the University of Alaska Fairbanks Geophysical Institute, and the Alaska Division of Geological and Geophysical Surveys.

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