Thanks, Heather. I restarted the stream at 4:05 pm when I saw it go to a black screen, and didn't bother post because it was only down a couple of minutes.
It sounded quite windy on the HM cam just before it went down this time, so there may be a power outage. I didn't see any in that area when I looked, but there were a couple of small ones in towns on either side, so hopefully it's something like that will be fixed before long.
I will let Ken know, though I don't think he has any contacts at Harrison Mills these days.