All of what looks like snow here was actually sleet! Sometimes it seems that sleet (ice pellets) is the default winter-precipitation mode in these parts, given its occurrence in many of our winter-weather episodes. Still, an all-sleet event like this is uncommon, and was still ongoing with nearly an inch accumulated. Sleet consists of solid little ice balls, which are raindrops that freeze after passing through a sufficiently deep layer of subfreezing air temperatures near the surface.
Norman OK (23 Feb 22) Looking SSW
35.1825, -97.4398