|(1) VOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)|
|(3) Volcano:||Veniaminof (VNUM #312070)|
|(4) Current Color Code:||GREEN|
|(5) Previous Color Code:||YELLOW|
|(6) Source:||Alaska Volcano Observatory|
|(7) Notice Number:||2014/A11|
|(8) Volcano Location:||N 56 deg 11 min W 159 deg 23 min|
|(9) Area:||Alaska Peninsula|
|(10) Summit Elevation:||8225 ft (2507 m)|
|(11) Volcanic Activity Summary:||Seismic activity, indicative of unrest, at Veniaminof has decreased to near background levels during the past week. Clear eruptive activity has not been observed since October of 2013. Thus AVO is lowering the Aviation Color Code to Green and the Volcano Alert Level to Normal. Occasional steam plumes and weakly elevated surface temperatures may continue to be seen in satellite and webcam imagery as lava flows cool.
It is possible that this is only a temporary pause of activity in the eruption that began in June 2013, and that the eruption could resume. Pauses in eruptive activity are not uncommon at this volcano. AVO will continue to monitor the volcano closely.
|(12) Volcanic cloud height:||Unknown|
|(13) Other volcanic cloud information:||Unknown|
|(14) Remarks:||Mount Veniaminof volcano is an andesitic stratovolcano with an ice-filled 10-km diameter summit caldera located on the Alaska Peninsula, 775 km (480 mi) southwest of Anchorage and 35 km (22 mi) north of Perryville. Veniaminof is one of the largest (~ 300 cubic km; 77 cubic mi) and most active volcanic centers in the Aleutian Arc and has erupted at least 13 times in the past 200 years. Recent significant eruptions of the volcano occurred in 1993-95 and 2005. Both were Strombolian eruptions producing lava fountans and minor emissions of ash and gas from the main intracaldera cone. During the 1993-95 activity, a small lava flow was extruded into the ice field producing a melt pit. Minor ash-producing explosions occurred nearly annually between 2002 and 2008. Previous historical eruptions have produced ash plumes that reached 20,000 ft above sea level (1939 and 1956) and ash fallout that blanketed areas within about 40 km (25 mi) of the volcano (1939).|
|(15) Contacts:||John Power, Scientist-in-Charge, USGS
email@example.com (907) 786-7497
Jeff Freymeuller, Coordinating Scientist, UAFGI
firstname.lastname@example.org (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
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