Explained: Flying Carpet Rhombus-shaped Cloud in Exeter

Mick West

Administrator
Staff member


via: http://www.westernmorningnews.co.uk...carpet-cloud/story-22011903-detail/story.html

The Met office gives the correct explanation:
However this is a little hard to visualize from the text alone. Perhaps a better way of looking at it would be to see what it would look like if the contrail were not broken:
20140808-074226-hh0vo.jpg

Now that looks a bit more like a regular contrail that's been around a few minutes, and has spread out a bit. But how does it end up like the "magic carpet"? Why does it get cut up so neatly.

The answer is that it does not get cut off along a long straight line, but rather gets cut off when the contrail is narrow, and then the longer "edge" forms as the contrail spread vertically, and the wind shear spreads it horizontally. So what might the original contrail look like?

20140808-075125-d4umh.jpg

Now that looks more reasonable. Contrails are generally not continuous. Most contrails start and stop. A contrail is basically the jet engine revealing regions of the atmosphere that have a lot of water in them - kind of like invisible clouds. In this case there was just a single "invisible cloud" in that particular region of the sky, and the plane flew through it and made a contrail.

So why did it spread out? Well, a contrail is a type of cloud. More specifically it's a cirrus cloud, a high altitude cloud made of ice crystals. It spreads when there is enough moisture in the air for the ice crystals to grow. They grow at different rates, and the larger ice crystals will sink through the air faster than the smaller ones. With a cirrus cloud, this can lead to the "cirrus uncinus" (curly hook) clouds because the wind speed is generally lower as you descend, so the falling crystals will trail behind.


While this gives a "tail" for an individual cloud, when the cloud is a long contrail, you actually get a whole sheet. Have a look at the progression of an individual contrail from the initial narrow trail (starting around 400 feet wide), to a much thicker contrail, often over a mile wide.

upload_2014-8-8_8-10-23.png

Now imagine what would have happened if the trail was only a short segment, passing through a small region of ice-supersaturated air
upload_2014-8-8_8-16-7.png

So we can see how a short segment of a normal contrail can end up like a "rhombus" shape.
 
Last edited:

Joe

Senior Member
Are there any actual pictures of the same thing ?
 
Last edited by a moderator:

Mick West

Administrator
Staff member
Are there any actual pictures of the same thing ?
As they say, it's quite unusual to get one quite like this. You it's ice supersaturation in a fairly limited region, so the odds are against it. Not something you will see often.
 

Mick West

Administrator
Staff member
Like here's a pic I took years ago of a broken contrail. However it's much longer, and less dense.
 

deirdre

Senior Member.
this is totally not the same thing, but for laymen who cant picture such square clouds i'll stick this in, to show it is possible for clouds ( contrails are cirrus clouds) to have very straight edges.

edge.JPG
 

Pete Tar

Senior Member.
The picture illustrating the wind moving the main body of the cloud was interesting because I had thought the wind would be in the opposite direction, blowing the lighter bits to spread out, but it makes sense that the heavier portion gets blown leaving the thinner smear behind.
This may be why the edges are so straight, if it were blowing and spreading out the other way perhaps it would not be so well defined.
 

Trailspotter

Senior Member.
I've looked for other images of this cloud on the web, almost all of them are copies or crops from a few images taken from essentially the same spot at approximately the same time.

This one taken at a wide angle shows that the rhomboid cloud was rather small compared to other clouds in the sky and could readily be missed if it was not lit by the setting down Sun:

from http://www.dailymail.co.uk/news/art...Encounters-theres-one-shape-magic-carpet.html

The only notably different image I found so far is this:

from http://www.stunning-news.com/a-flying-carpet-spotted-in-england/

The cloud's reddish hue and different proportions indicate that it has been taken later and probably from a different location. The low light highlights the underlying structure of the cloud. The light and dark stripes in the upper corner are more consistent with the cloud spreading along the long side of the rhomboid, rather than along the short one, as proposed in OP.
 

Pete Tar

Senior Member.
The light and dark stripes in the upper corner are more consistent with the cloud spreading along the long side of the rhomboid, rather than along the short one, as proposed in OP.
I don't follow? There's 4 sides made of two parallel short and two parallel long sides.
The OP proposed it was pushed from the 'long' left to the 'long' right, creating the 'short' sides in the process.
(unless I've pictured it all wrong)
 

Trailspotter

Senior Member.
I don't follow? There's 4 sides made of two parallel short and two parallel long sides.
The OP proposed it was pushed from the 'long' left to the 'long' right, creating the 'short' sides in the process.
(unless I've pictured it all wrong)
There are two roughly perpendicular directions: in one the plane flew, in the other its short contrail spread. In OP, for illustration, the plane direction was selected as from top-left to bottom-right (or vice versa), whereas the last picture suggests that the plane probably flew in the perpendicular direction, that is, from bottom-left to top-right.
 

Mick West

Administrator
Staff member
There are two roughly perpendicular directions: in one the plane flew, in the other its short contrail spread. In OP, for illustration, the plane direction was selected as from top-left to bottom-right (or vice versa), whereas the last picture suggests that the plane probably flew in the perpendicular direction, that is, from bottom-left to top-right.
I was thinking there seemed to be the reman of an original contrail along the right edge

upload_2014-8-9_7-48-19.png

This is not that apparent in the second photo, but I still think it's consistent that the trail being there. Here's a color corrected version I made, with what I think is the direction of the plane.

upload_2014-8-9_8-0-33.png
 

Trailspotter

Senior Member.
I still think it's consistent that the trail being there. Here's a color corrected version I made, with what I think is the direction of the plane.
upload_2014-8-9_8-0-33_oval.png
The rib-like structures, like those in oval, usually occur across the spread contrails, not along them. Also, in the wide angle picture above (#7), wisps of cirrus clouds show the likely direction of the wind, that is, the direction in which the contrail has spread.
 

Mick West

Administrator
Staff member
View attachment 8378
The rib-like structures, like those in oval, usually occur across the spread contrails, not along them. Also, in the wide angle picture above (#7), wisps of cirrus clouds show the likely direction of the wind, that is, the direction in which the contrail has spread.
Those look more like ripples to me. There's some more distinct linear features in the bottom half.

upload_2014-8-9_9-1-38.png
 

solrey

Senior Member.
Those look more like ripples to me. There's some more distinct linear features in the bottom half.

View attachment 8379
Right, like an undulatus cloud produced by wind shear where the ripples are perpendicular to the wind, same as wind driven waves on a pond. The spreading of the contrail is indicative of wind shear. I see some streaks of the kind that are formed parallel with the wind as well, like short 'cloud streets' which I would imagine the turbulence from the wing tip vortices/pendules might contribute to the cloud street pattern.

http://namesofclouds.com/types-of-clouds/undulatus-clouds.html

http://www.wunderground.com/blog/JeffMasters/cloud-streets
 

Trailspotter

Senior Member.
Those look more like ripples to me. There's some more distinct linear features in the bottom half.

View attachment 8379
Here is a picture from my iPhoto archive featuring a spread contrail illuminated from below (the top one):
P1030116.JPG
The ratio of spacing between 'ribs' across contrail to the contrail width looks more like that of 'my' ripples than 'your' linear features.
 

Mick West

Administrator
Staff member
Consider the feathering though. The bottom left edge is feathered. The other edges are not. Feathering is apparent in the trailing side of your contrail.
 

Mick West

Administrator
Staff member
Here's another possible square cloud from contrail exampl. Less well define dedges

source: http://sylphsandufocloudships.wordpress.com/2014/05/

And here's one that I thought was not from a contrail, but the accompanying explanation says

source: http://www.cbc.ca/nl/features/nlweather/2008/08/the_weekend.html

Possible contrail:

Source: http://starsimplified.wordpress.com/2010/12/page/2/
 

Trailspotter

Senior Member.
Consider the feathering though. The bottom left edge is feathered. The other edges are not. Feathering is apparent in the trailing side of your contrail.
The discussion of such fine details would make sense if we had an original photograph in original resolution, not the one that was reduced in size and probably enhanced in some way. My point was that the additional details seen only in the last picture are normally observed oriented across the contrail rather than along it. Before continuing our argument about which direction is which, we should find the cloud dimensions first.
 

BdeB

New Member
Hello Mick
First of all I love your site.
I'm from the Netherlands and probably my english won't be perfect, so you know :)
I've read about this phenomena at a dutch alternative media site. The most ridiculous explanations appeared in the comments section. It bugged me that all the pictures were up close, so I searched the internet for other pictures. This is the only one I found from more of a distance.



The upper right looked like a piece of a contrail to me, maybe the same contrail even.
Maybe you can shed a light on this. Contrails are your expertise.
 

Mick West

Administrator
Staff member
Interesting, here I've cropped and enhanced it:


The cloud in the upper right does seem similar in density to the "square cloud". Hard to say though.
 

Trailspotter

Senior Member.
A quick pseudo stereo image of the rhomboid cloud with the left part cropped from the new image and the right part from the previous one:
square cloud stereo 2.png
It shows that the cloud is not flat, it is slightly bent in the middle along the darker line parallel the short edge and bulges down on the left side.

EDIT: rescaled and adjusted the right part; in stereo the long sides now look even longer. The long right edge is fairly straight, the bulging down increases to the left of it. It is the most prominent at the left side of the cloud, but the right side bulges down a bit as well. This is consistent with Mick's suggestion of the long right edge being the remain of an original contrail.
 
Last edited:

solrey

Senior Member.
Took these shots just minutes ago of a spreading contrail above the full moon rise. I was out finishing up in the garden and actually saw this contrail and a few others as they were formed overhead. Saw them spreading out and heading toward the east so I grabbed the camera when I finished up. This contrail was somewhere around 30 minutes old +/- 5 min. when I snapped the shots. Direction of travel was from L (N)-R(S), upper level winds were blowing "top" (W) to "bottom" (E). The second pic was taken just a few minutes after the first one.

DSCN6952.JPG DSCN6956.JPG
 

Bob Solomon

New Member
Here's another candidate if anyone's interested. Not so well defined along 2 of the edges, but there seems to be more than one section.

10603607_10204713684144777_2571344561865780244_n.jpg
 
Thread starter Related Articles Forum Replies Date
Mick West Explained: Exmouth UFO Flying Saucer - Sunlit Contrail and Motion Blur Skydentify - What is that Thing in the Sky? 70
Provemewrong Explained: Why flying isn't impossible on a globe Flat Earth 106
Whitebeard Explained: Colorado Man Photographs Flying Jellyfish-Like ‘Critters’ [Water on Lens, Caustic Bokeh] UFOs, Aliens, Monsters, and the Paranormal 17
Mick West Explained: New Navy UFO Videos UFO Videos and Reports from the US Navy 69
Cassi O Polaris Height Perspective Explained (No math required) Flat Earth 1
Mick West Explained: RARE Video Footage of "Alien Space Craft" WATCHING ISS Astronaut! UFOs, Aliens, Monsters, and the Paranormal 0
A Explained: astronaut's movement causes lunar flag to wave in Apollo 15 footage Conspiracy Theories 0
Mick West Explained: The "Many Faces" of Patrick Crusius, the El Paso Shooter Conspiracy Theories 22
Mick West Explained: "Beam of Light" in To The Stars Academy header images UFOs, Aliens, Monsters, and the Paranormal 0
Mick West Explained: "UFOS" in Donald Trump's Crowd Photo on 4th of July UFOs, Aliens, Monsters, and the Paranormal 3
D Explained: Photo of 747 with Contrails Only on One Side [Fake, April Fool] Contrails and Chemtrails 21
Qulaey Explained: 17.61 Mile Mirror Flash Supposedly Proves Flat Earth [Refraction] Flat Earth 5
Mick West Explained: The Navy's New "UFO" Reporting Guidelines UFO Videos and Reports from the US Navy 32
Mick West Explained: "It's photoshopped because it has to be" Flat Earth 3
Mick West Explained: Jet Chasing UFO: X-45A and F/A-18B Formation Flight Skydentify - What is that Thing in the Sky? 6
Trailblazer Explained: video of concentric circular "chemtrails" (E-3 Sentry AWACS plane, Feb 1 2019) Skydentify - What is that Thing in the Sky? 3
Rory Explained: How Mount Rainier helps demonstrate the shape of the globe Flat Earth 38
creatonez Explained: Why the Earth does not look oblate in photos from space Flat Earth 0
MikeG Explained: EU Army Deployed to Paris Conspiracy Theories 1
Mick West Explained: Unexplained Green Light During Thunderstorm Skydentify - What is that Thing in the Sky? 7
Mick West Explained: Flashes of Light During the World Trade Center Collapse 9/11 5
Mick West Explained: House "Cut in Half", Tubbs Fire, Santa Rosa, Coffey Park Wildfires 0
Mick West Explained: Burnt Cars on California Beach [TV Set] Wildfires 1
Mick West Explained: Unknown Brewing Company UFO UFOs, Aliens, Monsters, and the Paranormal 0
Mick West Explained: Why Kavanaugh's Calendar PDF looks Edited [OCR] Current Events 0
Mick West Explained: Mysterious Red Planet Like Object Filmed Next To The Moon. Atglen [Reflection] UFOs, Aliens, Monsters, and the Paranormal 0
Mick West Explained: Podesta 14 + Fish [Promotional Tweet for UN Global Sustainability Goals] Conspiracy Theories 7
Mick West Explained: Dark Streak UFO Photo - Barn Swallow + Motion Blur UFOs, Aliens, Monsters, and the Paranormal 0
Mick West Explained: DEW Energy Beam Starting Forest Fires - Dirty Lens, Light Streak Conspiracy Theories 13
Mick West Explained: A Dozen Or More Southern Valley UFOs UFOs, Aliens, Monsters, and the Paranormal 0
Mick West Explained: Floating Triangle UFO in Buenos Aires Google Maps [Bridge] UFOs, Aliens, Monsters, and the Paranormal 0
Rory Explained: Space Shuttle Footage Reflection of Face [Shot Through Window] Conspiracy Theories 5
Mick West Explained: Washington State Island "Mystery missile" - Helicopter Skydentify - What is that Thing in the Sky? 49
Andrew Gillett Explained: Squares in the sky? [Reflection of lights in a window] Skydentify - What is that Thing in the Sky? 18
Mick West Explained: Mysterious lights over Milwaukee [Seagulls, Night Exposure Trails] Skydentify - What is that Thing in the Sky? 27
Mick West Explained: Why Some Marjory Stoneman Douglas Shooting Google Search Results Predate the Event Conspiracy Theories 1
Priyadi Explained: Why We Don't See Satellites in Photos Taken From The ISS Flat Earth 1
Trailblazer Explained: Vatican "chemtrail spraying" coin [part of set depicting Pope's travels] Contrails and Chemtrails 4
deirdre Explained: Mysterious burning crater in Mexico spurs UFO crash speculation (Garbage pit) UFOs, Aliens, Monsters, and the Paranormal 0
Benjamin Moore Explained: Why Earth Has A Magnetic Core Even Though the core is Molten Metal Flat Earth 2
FlightMuj Explained: Photo from ISS shows "open window" [Scratch Cover] Flat Earth 2
Mick West Explained: "Smoke Trails" On 9/11 World Trade Center Falling Debris [Dust/Powder] 9/11 10
Mick West Explained: Roy Moore Two Color Yearbook Signature [Depth of Field Chromatic Aberration] Conspiracy Theories 34
Mick West Explained: Why Planes Get Dented Nosecones - It's Mostly Birds General Discussion 4
Mick West Explained: Unburned trees next to burned down structures as evidence of secret "energy weapons" Wildfires 119
Mick West Explained: Photo of "UFO" Used in Connection with Nimitz Incident [Balloon] UFO Videos and Reports from the US Navy 8
Mick West Explained: Mexico City Earthquake Lights [Power Line Arcing and Transformer Explosions] Science and Pseudoscience 30
Mick West Explained: Cloud Seeding Weather Modification in Texas before Hurricane Harvey Contrails and Chemtrails 1
Bunkmeister Explained: Coast Guard Geographic Range Table promoted by flat earthers Flat Earth 15
Mick West Explained: Charlottesville Car Attack License Plates - Ohio GVF 1111 (and GVF 1122) Conspiracy Theories 2
Related Articles


















































Related Articles

Top