I see your point about the difference between news coverage and cancellations. I hadn't thought of it that way.
The One-Call system is new to the school district this year. The schools and/or the district are able to make recorded calls to send out to every student's home in the district or to any of a large number of sub-groups such as the middle school girl's basketball team or the high school band. It has been a very good communications tool for everything from cancellations to meeting announcements. Overall, this has gotten very good feedback.