Every spring after the trail between Snoqualmie Pass and Naches Pass emerges from the snow, I begin posting a trail report every 5 days.
This information comes from all available sources including NFS posts, trail reports, etc. The snow reports are based mostly on Sentinel-2 satellite scans of the PCT which occur every five days but require minimal cloud cover to be useful. Any scan with less than 30% cloud cover is available almost immediately on the PCTA ArcGIS trail map. When the cloud cover is greater than 30% (like on June 21st) then it requires some extra work on my part.
These reports continue until there is no need for PCT backpackers to take snow equipment (spikes & axe) on any part of the trail in Washington.