This looks like a snowy mess but no–it’s sleet! Accumulating sleet, especially this much, apparently is pretty rare (and thank goodness. Shoveling it is like moving wet concrete!). Supposedly the last time we had this much was in 2007.
And it’s much slicker than snow as well.
But no worries. As has been the case all winter, the next few days will be much above average. This stuff is soon to be just a memory.