Just after 9 p.m. Wednesday 6/5, I stepped outside my trailer near Lake Merwin (south of Mt. St. Helens) and saw these strange dark contrails to the NW. The vertical filaments, especially, are unlike any contrails I've ever seen. I took several pictures, both wide-angle and telephoto.
Strange vertical contrails
By: CedarSubscribe Channel: Weather & Scenery Location: Looking NW from a campground on the south side of Lake Merwin, WA