contrails

This W-shaped contrail was seen on 23rd June 2014 in San Luis Obispo county and beyond. There are many pictures from different locations in the comments to the KSBY FB photo: https://www.facebook.com/ksbynews/photos/pb.240187228708.-2207520000.1405317781./10152959624733709/?type=3&theater and...

This video is apparently from some sort of Italian radio show, where an airline passenger is interviewed. He tells a story about how he during a commercial flight was told to close the blinds. He claims that the request was very forcefully enforced, where they literally checked every window, and...

https://www.facebook.com/groundzeroradio/photos/a.495335482101.268879.373935332101/10152210116922102/?type=1&theater (1st august) This is what was seen today near I -205 in Gresham Oregon east of Portland.. I took this off 122nd That's what it looked like out side of my work in...

I think the answer to this question might help people understand better what they are seeing in the sky. I live in Bristol in the UK. the road I live on is a few degrees off a straight North/South direction, so my lounge window is pointing slightly south West. I was looking out of my window...

Found a posting of some fabulous old photos (1940's-1960's) of Downtown Chicago. Most of these don't seem to be art pics, but rather snaps of the city. Taking a quick glance through them I could find no obvious plane trail lines like you see today. Some of the skies show smog from industry, but...

I recently discovered yet another anti "chemtrail" movie on Youtube called SKYSCRATCH - The Geoengineering/Chemtrail Cover Up Edit: Added more up-to-date information concerning contrail heating effects. This movie contains a number of misassumption and errors which I will go through in this...

One problem I have in telling people that contrails can actually persist, and can even spread out to cover the sky, is that people tend to be suspicious of random people on the internet. So I decided to simply let 70 years of books on clouds speak for themselves. Result: Every single book on...

Update: See likely explanation here: https://www.metabunk.org/threads/sinusoidal-thin-contrails-explained-solitary-hybrid-contrails-the-rook-instability.4539/ Photo: Christophe EECKHAUT, (c) CAELESTIA/Belgisch UFO-meldpunt Photo: André DILDICK, (c) CAELESTIA/Belgisch UFO-meldpunt Via...

Recently Look-Up.org.uk made a claim that the Met Office had informed him that the temperature for the formation of contrails must be -57C https://www.facebook.com/permalink.php?story_fbid=1416500845255774&id=1410029482561123&stream_ref=10 Date: Mon, 20 Jan 2014 12:54:48 +0000 From...