(1) VOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)
(2) Issued:(20130830/1759Z)
(3) Volcano:Veniaminof (CAVW# 1102-07-)
(4) Current Color Code:ORANGE
(5) Previous Color Code:orange
(6) Source:Alaska Volcano Observatory
(7) Notice Number:2013/A17
(8) Volcano Location:N 56 deg 11 min W 159 deg 23 min
(9) Area:Alaska Peninsula Alaska
(10) Summit Elevation:8225 ft (2507 m)
(11) Volcanic Activity Summary:Intense seismicity, lava fountaining, and ash emissions to 15,000 to 20,000 feet above sea level have been occurring at Veniaminof Volcano over the past several hours. The ongoing episode of activity is some of the strongest unrest detected so far during the eruption at the intracaldera cone of the volcano that began in early June. Although the activity at present is primarily lava fountaining and moderate ash emission, it is possible that conditions may continue to escalate, and higher rising, more ash rich plumes may be generated.

The ash plume associated with the current level of unrest is moving in a generally southerly direction and may result in trace amounts of ash fall on areas downwind of the volcano including Perryville and possibly the Chignik area. Ash fall amounts are not expected to be significant and likely will be less than 1/16 inch, although areas within 1-2 miles of the eruption site could receive thicker amounts of ash fall. More information about volcanic ash and the effects of ash fall can be found on the AVO web page (www.avo.alaska.edu), or by calling AVO at 907-786-7497.

AVO is monitoring the volcano closely and may issue additional information about the status of activity as needed throughout the day.
(12) Volcanic cloud height:Unknown
(13) Other volcanic cloud information:Unknown
(14) Contacts:John Power, Scientist-in-Charge, USGS
jpower@usgs.gov (907) 786-7497

Jeff Freymueller, Coordinating Scientist, UAFGI
jeff.freymueller@gi.alaska.edu (907) 378-7556
(15) Next Notice:A new VONA will be issued if conditions change significantly or alert levels are modified. While a VONA is in effect, regularly scheduled updates are posted at
http://www.avo.alaska.edu