The skies over Chiloquin OR were completely filled with so-called “persistent contrails” despite the most recent relative humidity reading from 60 miles away being just 26% at cruising altitude.
Condensation trails cannot form in the absence of condensation nuclei at less than 100% relative humidity.
Oh, and we also got an #incrediblyraresundog
Wyoming Soundings – http://weather.uwyo.edu/upperair/sounding.html