|(1) VOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)|
|(3) Volcano:||Veniaminof (VNUM #312070)|
|(4) Current Color Code:||YELLOW|
|(5) Previous Color Code:||GREEN|
|(6) Source:||Alaska Volcano Observatory|
|(7) Notice Number:||2015/A6|
|(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:||Over the past day, seismicity at Veniaminof has increased and is ongoing in the form of volcanic tremor. Thus we are raising the the Aviation Color Code to Yellow and the Volcano Alert Level to Advisory.
No eruptive activity is observed in web camera or satellite views from today.
|(12) Volcanic cloud height:||Not observed|
|(13) Other volcanic cloud information:||Not observed|
|(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, 2005, and 2013. These were Strombolian eruptions that produced lava fountains and minor emissions of ash and gas from the main intracaldera cone. During the 1993-95 activity, a small lava flow was extruded, and in 2013, five small lava flows effused from the intracaldera cone over about five months. Minor ash-producing explosions occurred nearly annually between 2002 and 2010. 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
firstname.lastname@example.org (907) 786-7497
Jeff Freymueller, Coordinating Scientist, UAFGI
email@example.com (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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