|(1) VOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)|
|(3) Volcano:||Pavlof (VNUM #312030)|
|(4) Current Color Code:||ORANGE|
|(5) Previous Color Code:||RED|
|(6) Source:||Alaska Volcano Observatory|
|(7) Notice Number:||2014/A17|
|(8) Volcano Location:||N 55 deg 25 min W 161 deg 53 min|
|(9) Area:||Alaska Peninsula|
|(10) Summit Elevation:||8261 ft (2518 m)|
|(11) Volcanic Activity Summary:||The intensity of the eruption of Pavlof Volcano has greatly diminished, and the Aviation Color Code is being decreased to ORANGE and the Volcano Alert Level to WATCH.
Seismic tremor abruptly decreased around 7 pm AKST yesterday (04:00 UTC on 16 November) and has remained at very low levels since. Satellite observations confirmed a large decrease in ash emissions, and at present show no evidence of an ash plume at the volcano. Discrete seismic events continue to be observed at Pavlof, and minor ash emissions may be occurring that are not detected in satellite. Pilot and/or ground observer reports may provide additional information once the sun comes up. Pauses of days to weeks are common during eruptive episodes at Pavlof and increased activity could occur with little warning.
Aviation users should refer to the National Weather Service for updated SIGMETs on the ash cloud hazard (http://aawu.arh.noaa.gov/sigmets.php). No reports of ash fallout on nearby communities have been received and we encourage observers to contact AVO should it occur (https://www.avo.alaska.edu/ashfall/ashreport.php).
|(12) Volcanic cloud height:||None detected at the volcano at present. Minor ash emissions may occur but will likely be lower than 12,000 ft above sea level.|
|(13) Other volcanic cloud information:||See SIGMETs for information on dispersed cloud from the period of heightened activity.|
|(15) Contacts:||John Paskievitch, Acting 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