This is a rare meteorological phenomenon called a SKYPUNCH. Thought it worth discussing.

So what’s going on there, meteorologically speaking?

Bubblecar said:

So what’s going on there, meteorologically speaking?

I’d have to look it up but was hoping someone could throw a nice illustrative explanation on before I got to it.

A pity Steve never peeps in here.

Wiki say:

Fallstreak Hole

A fallstreak hole, also known as a hole punch cloud, punch hole cloud, skypunch, canal cloud or cloud hole, is a large circular or elliptical gap, that can appear in cirrocumulus or altocumulus clouds. Such holes are formed when the water temperature in the clouds is below freezing but the water has not frozen yet due to the lack of ice nucleation particles (see supercooled water). When ice crystals do form it will set off a domino effect, due to the Bergeron process, causing the water droplets around the crystals to evaporate: this leaves a large, often circular, hole in the cloud.

It is believed that the introduction of large numbers of tiny ice crystals into the cloud layer sets off this domino effect of evaporation which creates the hole. The ice crystals can be formed by passing aircraft which often have a large reduction in pressure behind the wing- or propellor-tips. This cools the air very quickly, and can produce a ribbon of ice crystals trailing in the aircraft’s wake. These ice crystals find themselves surrounded by droplets, grow quickly by the Bergeron process, causing the droplets to evaporate and creating a hole with brush-like streaks of ice crystals below it. The articles by Westbrook and Davies (2010) and Heymsfield et al. (2010) explain the process in more detail, and show some observations of their microphysics and dynamics. Such clouds are not unique to any one geographic area and have been photographed from many places.

Because of their rarity and unusual appearance, as well as very little exposure in media, fallstreak holes are often mistaken for or attributed to unidentified flying objects.

http://en.wikipedia.org/wiki/Fallstreak_hole

Bubblecar said:

Wiki say:

Fallstreak Hole

A fallstreak hole, also known as a hole punch cloud, punch hole cloud, skypunch, canal cloud or cloud hole, is a large circular or elliptical gap, that can appear in cirrocumulus or altocumulus clouds. Such holes are formed when the water temperature in the clouds is below freezing but the water has not frozen yet due to the lack of ice nucleation particles (see supercooled water). When ice crystals do form it will set off a domino effect, due to the Bergeron process, causing the water droplets around the crystals to evaporate: this leaves a large, often circular, hole in the cloud.

It is believed that the introduction of large numbers of tiny ice crystals into the cloud layer sets off this domino effect of evaporation which creates the hole. The ice crystals can be formed by passing aircraft which often have a large reduction in pressure behind the wing- or propellor-tips. This cools the air very quickly, and can produce a ribbon of ice crystals trailing in the aircraft’s wake. These ice crystals find themselves surrounded by droplets, grow quickly by the Bergeron process, causing the droplets to evaporate and creating a hole with brush-like streaks of ice crystals below it. The articles by Westbrook and Davies (2010) and Heymsfield et al. (2010) explain the process in more detail, and show some observations of their microphysics and dynamics. Such clouds are not unique to any one geographic area and have been photographed from many places.

Because of their rarity and unusual appearance, as well as very little exposure in media, fallstreak holes are often mistaken for or attributed to unidentified flying objects.

http://en.wikipedia.org/wiki/Fallstreak_hole

chemtrails.

Here’s one over New Zealand:

Sounds pretty straight forward. Thanks Car.

Austria:

Riff-in-Thyme said:

Sounds pretty straight forward. Thanks Car.

wait till you see one at night on a full moon with multi-coloured moon rings.

Bubblecar said:

Here’s one over New Zealand:

That’s got good definition to it.

This one reminds me of the Arizona meteor crater:

Bubblecar said:

Austria:

It sorta looks like if it happened in certain parts of the USA it would be a tornado.

roughbarked said:

Riff-in-Thyme said:

Sounds pretty straight forward. Thanks Car.

wait till you see one at night on a full moon with multi-coloured moon rings.

Don’t get me excited. I’ll start seeing fairies. ;)

Bubblecar said:

This one reminds me of the Arizona meteor crater:

certainly has depth.

roughbarked said:

It sorta looks like if it happened in certain parts of the USA it would be a tornado.

Seems to have some small similarity to the tornado forming mechanism

Riff-in-Thyme said:

roughbarked said:

Riff-in-Thyme said:

Sounds pretty straight forward. Thanks Car.

wait till you see one at night on a full moon with multi-coloured moon rings.

Don’t get me excited. I’ll start seeing fairies. ;)

I’ve actually got photographs but I’ll have to find the slides and scan them. give me a little time and I’ll show all. Could be a bit longer than a little to find the slides and then make the scanner work but take my word for it.. If you don’t believe that, I will find a way to show proof.

roughbarked said:

I’ve actually got photographs but I’ll have to find the slides and scan them. give me a little time and I’ll show all. Could be a bit longer than a little to find the slides and then make the scanner work but take my word for it.. If you don’t believe that, I will find a way to show proof.

Looking forward to it bloke :)

Riff-in-Thyme said:

roughbarked said:

It sorta looks like if it happened in certain parts of the USA it would be a tornado.

Seems to have some small similarity to the tornado forming mechanism

similar conditions.

Riff-in-Thyme said:

roughbarked said:

I’ve actually got photographs but I’ll have to find the slides and scan them. give me a little time and I’ll show all. Could be a bit longer than a little to find the slides and then make the scanner work but take my word for it.. If you don’t believe that, I will find a way to show proof.

Looking forward to it bloke :)

The biggest problems will be making the scanner work and cleaning the dust off the slides.. If you were sitting beside me I could probably find the slides within an hour.

roughbarked said:

similar conditions.

My impression is that they are kinda reversed conditions. Where the tornado weather gets condensed into a rotating wall cloud, this is the other way round and is subject to sudden dispersal.

Riff-in-Thyme said:

roughbarked said:

similar conditions.

My impression is that they are kinda reversed conditions. Where the tornado weather gets condensed into a rotating wall cloud, this is the other way round and is subject to sudden dispersal.

Probably correct. The skypunch has an optical illusion included as a bonus gratis.

roughbarked said:

Riff-in-Thyme said:

roughbarked said:

similar conditions.

My impression is that they are kinda reversed conditions. Where the tornado weather gets condensed into a rotating wall cloud, this is the other way round and is subject to sudden dispersal.

Probably correct. The skypunch has an optical illusion included as a bonus gratis.

whereas, as tornado is far from an illusion.

Part of the advanced bush firefighter course was being aware of what was going on around you.

That cloud looks exactly like the “unstable” clouds that we had to watch out for.

The main difference is that once the bushfire smoke punched a hole in those clouds(heat plume going up, not cold cell descending), things started to get more exciting on the ground.

but you are telling me that you have never seen multi-coloured rainbow rings around the moon?

You have seen moon rings?

Kingy said:

Part of the advanced bush firefighter course was being aware of what was going on around you.

That cloud looks exactly like the “unstable” clouds that we had to watch out for.

The main difference is that once the bushfire smoke punched a hole in those clouds(heat plume going up, not cold cell descending), things started to get more exciting on the ground.

That, they would.

roughbarked said:

but you are telling me that you have never seen multi-coloured rainbow rings around the moon?

You have seen moon rings?

I’ve seen rings and at least once multiple rings that seemed to have some color to them but not easily picked up by the eye.

Kingy said:

things started to get more exciting on the ground.

How exactly? Is there more air movement once the hole is punched?

Riff-in-Thyme said:

roughbarked said:

but you are telling me that you have never seen multi-coloured rainbow rings around the moon?

You have seen moon rings?

I’ve seen rings and at least once multiple rings that seemed to have some color to them but not easily picked up by the eye.

a camera on a slower shutter speed can do.. but the eye had to force the brain to tell me to go get the camera.

Riff-in-Thyme said:

Kingy said:

things started to get more exciting on the ground.

How exactly? Is there more air movement once the hole is punched?

hot air rushes up cold air rushes down. fire grows it’s own tornado.

roughbarked said:

Riff-in-Thyme said:

Kingy said:

things started to get more exciting on the ground.

How exactly? Is there more air movement once the hole is punched?

hot air rushes up cold air rushes down. fire grows it’s own tornado.

Fire tornadoes are reliant on a certain amount of cloud cover?

Riff-in-Thyme said:

Kingy said:

things started to get more exciting on the ground.

How exactly? Is there more air movement once the hole is punched?

OOOH, yeah!

A) Lets squirt some water on this fire.

B) Holy Fuck, run for your lives!

Riff-in-Thyme said:

roughbarked said:

Riff-in-Thyme said:

How exactly? Is there more air movement once the hole is punched?

hot air rushes up cold air rushes down. fire grows it’s own tornado.

Fire tornadoes are reliant on a certain amount of cloud cover?

not necessarily. but air temps play a big part.

Kingy said:

Riff-in-Thyme said:

Kingy said:

things started to get more exciting on the ground.

How exactly? Is there more air movement once the hole is punched?

OOOH, yeah!

A) Lets squirt some water on this fire.

B) Holy Fuck, run for your lives!

Nothing like a “RUN FOR YOUR LIFE” moment! :) hehe

Riff-in-Thyme said:

Kingy said:

Riff-in-Thyme said:

How exactly? Is there more air movement once the hole is punched?

OOOH, yeah!

A) Lets squirt some water on this fire.

B) Holy Fuck, run for your lives!

Nothing like a “RUN FOR YOUR LIFE” moment! :) hehe

seen on the back of the t-shirt of a bomb squad member.. “if you see me running, try to out run me”

roughbarked said:

Riff-in-Thyme said:

Kingy said:

OOOH, yeah!

A) Lets squirt some water on this fire.

B) Holy Fuck, run for your lives!

Nothing like a “RUN FOR YOUR LIFE” moment! :) hehe

seen on the back of the t-shirt of a bomb squad member.. “if you see me running, try to out run me”

that is a very thoughtful sentiment :)

Riff-in-Thyme said:

roughbarked said:

Riff-in-Thyme said:

Nothing like a “RUN FOR YOUR LIFE” moment! :) hehe

seen on the back of the t-shirt of a bomb squad member.. “if you see me running, try to out run me”

that is a very thoughtful sentiment :)

actually, I made that up.. here is the original quote..

————————————————————————————————————————
seen on a bomb disposal team members shirt “I am a bomb technician. If you see me running, try to keep up!”

What we are trying to say is: if you see a skypunch.. Don’t light a fire under it.

roughbarked said:

————————————————————————————————————————
seen on a bomb disposal team members shirt “I am a bomb technician. If you see me running, try to keep up!”

I’m sure there is an app in that somewhere.

I’m bailing. Thanks for the chat folks. C u’all over the weekend.

Riff-in-Thyme said:

roughbarked said:

————————————————————————————————————————
seen on a bomb disposal team members shirt “I am a bomb technician. If you see me running, try to keep up!”

I’m sure there is an app in that somewhere.

I’m bailing. Thanks for the chat folks. C u’all over the weekend.

ciao

roughbarked said:

What we are trying to say is: if you see a skypunch.. Don’t light a fire under it.

On the front of that shirt should be, “If you see a rainbow, don’t try to find it’s end!”

Riff-in-Thyme said:

roughbarked said:

What we are trying to say is: if you see a skypunch.. Don’t light a fire under it.

On the front of that shirt should be, “If you see a rainbow, don’t try to find it’s end!”

particularly if you are driving a car on a busy road.

roughbarked said:

What we are trying to say is: if you see a skypunch.. Don’t light a fire under it.

If you see clouds with flat bottoms, and a bushfire begins to push a smoke plume into them, be ready to run.

roughbarked said:

Riff-in-Thyme said:

roughbarked said:

What we are trying to say is: if you see a skypunch.. Don’t light a fire under it.

On the front of that shirt should be, “If you see a rainbow, don’t try to find it’s end!”

particularly if you are driving a car on a busy road.

if you google that, you’ll see what I mean.

http://www.geoengineeringwatch.org/haarp-unnatural-cloud-pattern-in-australia/

A Roll Cloud Over Uruguay – APOD

http://antwrp.gsfc.nasa.gov/apod/ap100105.html

:) nice roll cloud

Boris said:

A Roll Cloud Over Uruguay – APOD

http://antwrp.gsfc.nasa.gov/apod/ap100105.html

Riff-in-Thyme said:

:) nice roll cloud

Boris said:

A Roll Cloud Over Uruguay – APOD

http://antwrp.gsfc.nasa.gov/apod/ap100105.html

wow

Is anybody aware of any images of sharply delineated rain patterns. In a valley in the gold coast hinterland I once had a “wall of rain” come through from up valley. If someone had a camera on one of the peaks forming the valley it would have made a remarkable photo.

Riff-in-Thyme said:

roughbarked said:

but you are telling me that you have never seen multi-coloured rainbow rings around the moon?

You have seen moon rings?

I’ve seen rings and at least once multiple rings that seemed to have some color to them but not easily picked up by the eye.

There was a night, years ago, in which such a thing was visible along most of the east coast – we discussed it in the Old Forum.

this is probably the best roll cloud I’ve seen

https://www.youtube.com/watch?v=etmhpwYwFtk

Rick?

love it!

I didn’t realise mammatus cloud formation isn’t yet understood.

I fucking love science
These are Mummatus clouds, a fairly new cloud classification that’s only been recognized for the last few years. Their name derives from the Latin word “mamma”, meaning udder or breast (for fairly obvious reasons!).

Their formation is still fairly mysterious, with more than ten proposed mechanisms. They’re often associated with severe thunderstorms.

That middle right pic is awesome!

Given that

• The ice crystals can be formed by passing aircraft

It is unsurprising that

• fallstreak holes are often … attributed to unidentified flying objects

because something flying above and behind the clouds cannot be positively identified…

furious said:

Given that

• The ice crystals can be formed by passing aircraft

It is unsurprising that

• fallstreak holes are often … attributed to unidentified flying objects

because something flying above and behind the clouds cannot be positively identified…

Pffft! Everyone knows alien craft use ionizing technology to move through an atmosphere, eliminating the possibility of forming ice crystals this way! :P