From the American Meteorological Society website:

The 19^th AMS Conference on Mountain Meteorology will take place in a virtual format. As we are not able to meet in person as planned, we have changed the format of conference to one that is conducive to virtual learning and collaboration. Registered attendees will be able to view prerecorded oral presentations and posters in the online program one week before the conference takes place in order to prepare for live discussions that will take place via GoToMeeting following the keynote talks 13-17 July. There will also be virtual networking opportunities available throughout the week so that attendees can catch up with one another. While we acknowledge that face to face interactions are a vital part of our usual Mountain Meteorology Conferences, we hope that this alternate format allows us to share our science and interact with one another as best we can. We hope that by eliminating travel costs and setting registration rates as low as possible, we can maximize participation in the conference.