Oregon Hikers

Haven't seen this mentioned here yet. Awesome tool to check snow coverage before your hike. Updates every five days, although with cloud coverage the most useful image might still be several weeks old. However, it has better resolution than other free sources I've seen. Play around with the controls to change dates, toggle on date stamps, etc.

https://apps.sentinel-hub.com/sentinel- ... Dates=true

Also available now as a layer on CalTopo (see Weekly High-Res in the Daily Satellites category), although there is a bit more control on the actual Sentinel Playground page.