After Mirror Lake at Snoqualmie Pass melts, I begin posting weekly trail reports.
This information comes from all available sources. 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 on any part of the trail.