There's more to it than just the pattern and systems "always" forecasting snowfall lower amounts in the KTRI SWVA Area recently.
The Model's ingest previous systems track, intensity, precip/snowfall data from numerous NWS and Coop affiliated Stations. January's pattern with these parameters has left a fingerprint with them.
Also, there's data flowing into the System from a local Station in Pennington gap. It is in a terrible location to reflect the area's weather. It also doesn't meet NWS siting location Guidelines as it's TH Sensors are just 10-15 feet from a metal structure. Also, the city employees man it and they are less than caring, so to speak.
This is the only official station between Middlesboro and KTRI. There's your reflection on Model's.