@SmiKooMan
You are right. There is a bug in Meteogram and Airgram for snowfalls forecast when HRDPS model is selected. While Basic panel displays correct snow forecasts with this model.
@SmiKooMan
Apparently there have been no radiosonde launches from Vernon recently.
https://radiosondy.info/sonde_table.php?startplace=Vernon [BC] (CA)&table=startplace