|(1) VOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)|
|(3) Volcano:||Bogoslof (VNUM #311300)|
|(4) Current Color Code:||ORANGE|
|(5) Previous Color Code:||RED|
|(6) Source:||Alaska Volcano Observatory|
|(7) Notice Number:||2017/A53|
|(8) Volcano Location:||N 53 deg 55 min W 168 deg 2 min|
|(10) Summit Elevation:||492 ft (150 m)|
|(11) Volcanic Activity Summary:||No further ash emissions have occurred at Bogoslof volcano since the explosion today at 08:24 AKST (17:24 UTC). No detectable activity observed in seismic, infrasound or lightning data. We are therefore lowering the Aviation Color Code to ORANGE and the Alert Level to WATCH. Significant ash-producing explosions could occur at any time, with no detectable precursors. Low-level activity below our detection limit is possible and may present a hazard in the immediate vicinity of the island.
The volcanic cloud from the eruption this morning has dissipated and the SIGMET aviation warning message that is issued by the National Weather Service expired today at 11:15 AKST (2215 UTC)
|(12) Volcanic cloud height:||none observed|
|(13) Other volcanic cloud information:||n/a|
|(15) Contacts:||Michelle Coombs, Scientist-in-Charge, USGS
email@example.com (907) 786-7497
Jessica Larsen, Acting Coordinating Scientist, UAF
firstname.lastname@example.org (907) 322-4085
|(16) Next Notice:|
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