|(1) VOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)|
|(3) Volcano:||Bogoslof (VNUM #311300)|
|(4) Current Color Code:||ORANGE|
|(5) Previous Color Code:||YELLOW|
|(6) Source:||Alaska Volcano Observatory|
|(7) Notice Number:|
|(8) Volcano Location:||N 53 deg 55 min W 168 deg 2 min|
|(10) Summit Elevation:||492 ft (150 m)|
|(11) Volcanic Activity Summary:||An increase in seismic and infrasound activity from Bogoslof was detected from stations on nearby islands starting today, May 16, around 22:32 AKST (May 17 06:32 UTC) and is continuing. We have no satellite observations yet, but the infrasound signal suggests an explosive eruption has likely begun. No lightning has been detected. AVO is raising the Aviation Color Code for Bogoslof to ORANGE and the Volcano Alert Level to WATCH.
We will provide more information as it becomes available including any information about a resulting ash cloud.
Bogolsof is not monitored by a real-time seismic network and this inhibits AVO's ability to detect unrest that may lead to an explosive eruption. Rapid detection of an ash-producing eruption may be possible using a combination of data from seismic and infrasound networks on neighboring islands and satellite and lightning detection data.
|(12) Volcanic cloud height:||not available|
|(13) Other volcanic cloud information:||winds are to the south|
|(15) Contacts:||Michelle Coombs, Scientist-in-Charge, USGS
firstname.lastname@example.org (907) 786-7497
Pavel Izbekov, Acting Coordinating Scientist, UAFGI
email@example.com (907) 322-4085
|(16) Next Notice:|
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