Post got locked (sorry y'all, not sure what I did) but here's the updated original source for the chart data https://nsidc.org/snow-today/snow-viewer
Unfortunately the current government's axe man (Im not even saying that rat bastard's name) defunded and shut down every single weather and atmospheric observatory, so that none of the data from the sattelite observatories can be released, not to mention the last set of governments only giving lip service to 'meeting climate agreement goals'