First posted May 11, 2023 For additional information, contact: Alaska Volcano ObservatoryU.S. Geological Survey4210 University DriveAnchorage, AK 99508 The Observatory responded to eruptions, volcanic unrest or suspected unrest, increased seismicity, and other significant activity at 17 centers in 2019. most notable was an eruption of Shishaldin Volcano, featuring eruptive that produced lava fl...