LINK ~ U.S. Geological Survey National Volcanic Threat Assessment ~ 2018 Update

Scientific Investigations Report 2018-5140

By: John W. Ewert, Angela K. Diefenbach, and David W. Ramsey 

Part or all of this report is presented in Portable Document Format (PDF). For best results viewing and printing PDF documents, it is recommended that you download the documents to your computer and open them with Adobe Reader.
LINK ~  https://pubs.er.usgs.gov/publication/sir20185140