Started falling about an hour ago (~0900). The first band was light and left <1cm on the ground. Now there is a second band with larger flakes that added another 1cm and still piling up.
The wetness sensor doesn't appear to be registering this yet. Its voltage has only changed from 0.265 to 0.269 in the last hour, though the timing of these mV changes are about right. Apparently, the snow crystal structure prevents its water from making good contact with the sensor?