contrails

  1. Mick West

    Plane Flies in Front of Super Blue Blood Moon Eclipse

    Source: https://www.youtube.com/watch?v=bSykLp9yNJM Very short contrail?
  2. Mick West

    There Are No New Clouds, Just New Latin Classifications

    I took the above photo today. It shows some Cumulus mediocris clouds. Medium sized cumulus. There are some people who think that these small fluffy clouds are the only type of "real" clouds that exists, and that high clouds such as cirrus or odd looking clouds like mammatus are evidence of some...
  3. Mick West

    Spiral Contrails viewed from the International Space Station

    Source: https://twitter.com/astro_kimbrough/status/840584517798789120 So where and what are these contrails? Circular contrails are generally not "airliners", but more likely are military planes, like AWACs.
  4. Mick West

    Explained: Contrails Appear "Hot" in Thermal Imaging because the Sky Appears Very Cold

    A recent "UFO" case turned out to be a plane leaving a contrail. This was initially a little confusing as the footage was shot with a thermal camera which showed the engines of the plane as incredibly dark spots of heat, but also showed the contrail in a similar dark color, which seemed to...
  5. Mick West

    Contrails Hidden In 1950s and 1960s Family Photos

    Last year I acquired possession of a large trove of thousands of negatives of old family photos. My grandfather, Irving West, and his sons Frank and Donald we avid photographers. I spent some time digitizing them, but only recently have I gone through them looking for contrails. There are a few...
  6. Mick West

    A Sunlit Contrail Viewed From the Side

    Taken at 16:53 PST (00:53 Nov 19 UTC) from Shingle Springs The plane is Cathy Pacific Cargo 2081, about 110 miles from my viewpoint. It's interesting because the plane is at 36,000 feet, which makes the view angle under 4 degrees, so I'm practically viewing the contrail from edge on. I...
  7. Mick West

    Some "Black" Shadowed Aerodynamic Contrails

    I was snapping some pics of hole-punch clouds in this cloud layer when I suddenly noticed this quite dramatic black contrail. Now the fact that it is black isn't incredibly surprising when you notice that there are black clouds in the sky. And the areas where the contrail is darkest are also the...
  8. Mick West

    Relative Humidity at Flight Altitudes. Resources and Contrail prediction.

    Relative Humidity over the US at 300mb (about 30,000 feet) via Instant Weather Maps. Relative Humidity over Europe at 300mb (about 30,000 feet) via Instant Weather Maps. Twisterdata US RH map at 300mb (30,000ft), 250mb (34,000 ft), 200mb (38,600 ft) GOES-16 (East) water vapor: Lower (10), Mid...
  9. Mick West

    What's the Highest Contrail You've Taken a Photo Of?

    I just snapped this image of a jet at 45,000 and it made me wonder what the highest plane is I've ever taken a photo of. 45,000 is quite high, but not unprecedented. There are 45 jets currently in the air at 45,000 or above But only 6 at 47,000, and none (currently) above 47,000
  10. Mick West

    Why Were There Contrails Today, But Not Yesterday? It's the Weather!

    Today (Thursday Oct 6th, 2016) marked the first significant contrail morning for several months here in El Dorado County, Northern California. The above photo on the right of criss-crossing contrails was taken at 7:30AM, and planes continued to leave trails for the next few hours. I took photos...
  11. Mick West

    How Do You Take Good Photos of High Altitude Planes and Contrails?

    How to YOU get your best images of high altitude planes and contrails? With my 7D+500mm I would generally just use Shutter Speed Priority of 1/1000th, and leave the rest on auto. I'm not sure this is the best approach, but it's been okay for my needs. I've just got a new camera, a Nikon...
  12. Mick West

    Contrails over Sting & Peter Gabriel Concert in Lake Tahoe

    On July 16th, 2016, Sting and Peter Gabriel played at the Harvey's Lake Tahoe outdoor arena. I was there, and as well as enjoying the concert I also saw some interesting and spectacular contrails, and took quite a few photos (with my iPhone). I also sat directly behind a chemtrail believer who...
  13. C

    Strange Flickering in Contrail Video Posted in Earlier Thread [Focussing artifacts]

    First time posting on this website, [off topic antagonistic commentary removed]. Recently I was browsing through an old thread regarding colored contrails in a video posted by conspiracy theorist "Sibec". Within the thread someone else posted another video by Sibec showing a CargoLux 747-400...
  14. skephu

    Paul Beckwith (climate scientist) on chemtrails

    Climate scientist Paul Beckwith has posted a Youtube video where he debunks chemtrails by proposing that cleaner jet fuel and the physical and chemical changes in the atmosphere due to global warming make persistent contrails last longer because they consist of much smaller water droplets / ice...
  15. Trailblazer

    Persistent contrails at 26,000ft

    the conditions this morning didn't allow for persistent contrails at normal high altitude so this one looked a bit out of place. By the time I spotted the plane responsible it was no longer leaving a contrail, but it was still below 28,000 feet and climbing: it had only recently taken off...
  16. TEEJ

    Virgin Atlantic Airbus - Different coloured contrails, Kernersville, North Carolina 16th March 2016

    The following video was uploaded by Michael Rutledge of Kernersville, North Carolina. The video has the following description. Published on 18 Mar 2016 Notice the difference between colors from each side. I also have several stills and video of planes spraying while flying the opposite...
  17. Mick West

    Contrail Angle with the Horizon - A Useful Distance Rule of Thumb?

    The above diagram shows a grid of lines at 35,000 feet above the ground, viewed from ground level. Each line spacing is five miles apart. I've previously shown how to use the elevation of the horizontal lines to get a ballpark estimate of distance. But what about the sloped lines, what can they...
  18. Mick West

    Linear Clouds in Old Painting

    Soda Springs, Sierra Nevada Mountains. Norton Bush 1868 In a visit to the wonderful Crocker Museum in Sacramento I saw a couple of paintings,both over 100 years old that had linear clouds in them. The type of clouds that might be mistaken for contrails or "chemtrails". Crests of the Sierra...
  19. Mick West

    Calculator for RHi and Contrail Persistence Criteria

    . I've started on a calculator to convert RHw (relative humidity with respect to water) to RHi (relative humidity with respect to ice). https://www.metabunk.org/rh Currently it just takes RHw, temperature and pressure, and then gives you the RHi, and the value of RHw at which RHi is 100% (i.e...
  20. Trailblazer

    Contrail triangle, Versailles, Dec 28 2015

    If anyone wants a challenge... not much to go on! https://www.facebook.com/photo.php?fbid=10204982107262732&set=gm.10156405348735302&type=3&theater
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