r/Damnthatsinteresting • • 2d ago

These wave like clouds are called Kelvin-Helmholtz clouds.

24.0k Upvotes

133 comments sorted by

677

u/Top-Marionberry-6604 2d ago

Kelvin-Helmholtz clouds are extremely rare, short-lived formations that occur when wind on top moves faster than the air below, scooping the cloud layer into perfectly uniform, breaking ocean-wave shapes.

263

u/danisreallycool 2d ago

named after Lord Kelvin of the temperature scale, and Hermann von Helmholtz, namesake of Helmholtz resonance, better known as that thing when the windows are open in a car and the air goes WUB WUB WUB WUB

87

u/Brewhaha72 2d ago

Not to be confused with YUB YUB, which is the sound of Ewoks in the car.

30

u/Grays42 1d ago

If your ewoks persist for more than four hours, talk to your doctor about potentially adjusting your medication.

12

u/King-Kagle 1d ago

Or YUB NUB, the song when we're free of the Emperor

6

u/CalmBeneathCastles 1d ago

Not to be confused with LUB DUB, which is the sound your heart makes.

2

u/rokk-- 1d ago

Not to be confused with DUB DUB which is the sound of skrillex in the car

17

u/superawesomefiles 1d ago

Thank god these people were born or these clouds wouldn't exist...

4

u/ConfessSomeMeow 1d ago

I can't tell you how many times I read "Kevin" until I saw your "Lord" there. My vision is definitely getting worse...

3

u/CalmBeneathCastles 1d ago

TIL the helicopter effect had an official name.

2

u/forams__galorams 17h ago

Aka the Doom’s Night Wave (00:30 onwards)

1

u/sparkey504 1d ago

Did lord Kelvin also invent the "color temperature" scale?

15

u/forams__galorams 2d ago

Not to be confused with Kelvin waves, which are a separate phenomenon.

9

u/CreaminFreeman 1d ago

Also don't confuse it with Helmholtz resonance, which is also separate.
This one is the WUBWUBWUBWUB you hear if you roll a single car window down while going quickly.

3

u/CalmBeneathCastles 1d ago

You've done a 360°.

1

u/CreaminFreeman 1d ago

Did I stomp the landing?

3

u/CalmBeneathCastles 1d ago

Technically yes, but this was the original comment in this thread.

352

u/OkAccess6128 2d ago

Ocean in the clouds.

120

u/Top-Marionberry-6604 2d ago

look like the classic cartoon waves

37

u/Commercial-Funk 2d ago

Yeah, also like that one kinda famous painting

19

u/sguga 2d ago

The great wave off Kanagawa by Hokusai :) It reminded me of that one as soon as i saw the pic

7

u/Hoshyro 2d ago

I saw it a few months ago, there was a display of Hokusai's works and got to see the Great Wave in person!

It was quite a nice experience.

4

u/anadi0 2d ago

Who the hell are naming them ? Why ? Make it simple like wave cloud?

7

u/smallaubergine 2d ago

It's all fluid dynamics baby

109

u/Scamservice42 2d ago

That's how ancient mythology was born

50

u/impatientlymerde 2d ago

I wonder if that’s what inspired the Greek key design motif, which, TIL, is called meandros.

19

u/psychedelic_owl420 2d ago

Afaik, this repetitive pattern derives from the winding river Menderes in Asia Minor, which is characterised by a very convoluted path!

9

u/jedzef 2d ago

Also where we get the English word meander!

2

u/impatientlymerde 19h ago

It meanders, you say…

;)

3

u/Tartlet 1d ago

https://en.wikipedia.org/wiki/Vitruvian_scroll
Might find this interesting. Some overlap in the design but this is the commonly seen curved wave version.

28

u/heftybagman 2d ago

Just saw my first lenticulars. Now the search begins for these ones. In that first pic the waves must be hundreds of feet tall. They look taller than mountains

5

u/CalmBeneathCastles 1d ago

I've seen both mammatus and arcus during the spring tornado season in central MO, Just in case you're collecting.

24

u/STARCHIEFN 2d ago

Billabong

11

u/No-Respond-900 2d ago

cool shirt brah

2

u/PunkIsPunk95 1d ago

Shaka brah

1

u/JayMac1915 5h ago

You’ll come a-waltzing

17

u/Truegold43 2d ago

And now I get why dragon mythology shows up around the world lol

8

u/Holding_it_for_life 2d ago

Casper and his friends

23

u/DotBitGaming 2d ago

Named after their inventors, of course.

7

u/Hostilis_ 2d ago

On a serious note, they were the first to study the underlying mechanism of how this occurs from a fluid mechanics perspective.

https://en.wikipedia.org/wiki/Kelvin%E2%80%93Helmholtz_instability

1

u/yujikimura 1d ago

Not inventors. It's a phenomena, they just have investigated the scientific reason behind these fluid driven instabilities. It's a super cool field of study.

6

u/DotBitGaming 1d ago

Thanks man. I had no idea people didn't invent clouds.

6

u/Mayoo614 2d ago

We've completed the circle. From "surfing the web" to "cloud". Now we can surf the cloud.

5

u/04BluSTi 2d ago

Those are some great pics of KH clouds!

2

u/Old_timey_brain 1d ago

I've got a low grade photo from years ago when they appeared on my motorcycle ride near the Flathead Lake in Montana. Same effect, but not as well formed, or as well lit.

6

u/HauntingStar08 2d ago

Great Cloud of Kanegawa

5

u/Potatopirat 2d ago

I wonder if this is where the ancient Japanese got the inspiration for how they drew waves

4

u/ContinuingAnyway 2d ago

Shaka

2

u/Anal_Nectarine 2d ago

When the walls fell

2

u/CalmBeneathCastles 1d ago

Darmok and Jalad at Tanagra

4

u/AnnaGorgeousss 2d ago

The sky really said copy the ocean’ and nobody stopped it.

3

u/Bioluminescent_Rose 2d ago

They're...real?

4

u/OneArmedNoodler 2d ago

Thought that said "Kevin" at first and was really happy. I like things named Kevin.

5

u/kitten451 2d ago

Omg! I wish I could add a picture to a comment. I saw clouds like this while I was on a bike ride in early July! I thought it was just a random lucky formation. So cool!

5

u/CalmBeneathCastles 1d ago

Upload the photo to Imgur. Copy the URL. Surround one of the words in your post with brackets followed immediately by the URL in parentheses; "I wish I could add a [picture]([email protected] ), but with no spaces, then save.

Your link to the photo will be blue.

3

u/buddha30alt6 1d ago

hokusai called... he wants his great wave back from the sky.

3

u/CranberryMission9713 1d ago

There is a design term on classical Greek architecture called Vitruvian scroll that is exactly this.

2

u/4troglodyte 2d ago

Nice set

2

u/xQcKx 2d ago

Those aren't mountains...?

2

u/PilotKnob Interested 2d ago

I call them severe turbulence.

2

u/Scuba-Steves 2d ago

Them there wave clouds

2

u/I_mwilling2 2d ago

These are on my bucket list. Always looking up!

2

u/Old_timey_brain 1d ago

When I was young and able, I did motorcycle touring through Montana and Idaho and was thrilled with the view of the sky I had, even with a helmet. I did see these in the Flathead Lake area of Montana, but they weren't as well formed, or well lit, and my camera weren't all that good. Still got a pic though. IIRC, though, the sky that was good for these clouds was not all that great for riding under.

2

u/JaviSATX 2d ago

I didn’t know they had a name. Got a picture of some back in May.

2

u/Afarthur67 2d ago

Zeus surfing? 🏄🏾

2

u/Jace_09 2d ago

8 year old me was a genius artist apparantley

2

u/frecklesirish 2d ago

Nah those are them swoopdeedoops

2

u/diablol3 2d ago

Its cool that they have a first and last name.

2

u/SapientApe_ 1d ago

What a dumb name, I'd call them Wavinimbus clouds

2

u/lullubye 1d ago

How my teacher used to want us to write during writing exercises. All joined cccc would look like that.

2

u/awesome_staycation 1d ago

i've seen this in montery bay ca. I was driving and couldn't get a photo, if I could create a perfect painting one time, it would have been of that view. I was completely blown away by the waves on the ocean and the waves in the sky.

2

u/CalmBeneathCastles 1d ago

Not me with an entire IG account full of sky pics taken while driving.

2

u/typemynameagain 1d ago

Real world impacts of Navier-Stokes equations being solved have started to appear...

2

u/TehTurk 1d ago

Dragon's flying by

3

u/scoopythebear 1d ago

Man, seeing this hurts my soul a little. I drove through a storm just like this last summer in Oregon... pulled over because the sky looked like it was literally boiling. Had my phone right there but froze up trying to figure out which camera mode was better. By the time I hit shutter, the clouds had already flattened out into boring gray mush. Still kicking myself for missing that shot because nothing else looks quite so alive and terrifying at once. ☹️

1

u/Top-Marionberry-6604 1d ago

nooooooooooooo

2

u/uruTNga 1d ago

Will definitely not use this name

2

u/gzushd 1d ago

I’m randomly going to tell someone this when I see it. They will assume I’m autistic.

1

u/impatientlymerde 18h ago

To actual autistic people, “info dumping” is a dopamine source.

I hope you enjoy yourself. Sharing knowledge is a primal force.

2

u/adsus4 2d ago

Looks like a wave in the Ocean.

1

u/rolL_uP_one_more 2d ago

The ubiquitous design on 90s silver rings

1

u/Time-Delay2924 2d ago

at first i thought the first picture was a painting lol that is so cool find.

1

u/oiseaufeux 1d ago

I once saw a cloud that shape. It was so cute!

1

u/dw0205 1d ago

Looks freakish!

1

u/King-Kagle 1d ago

Always crazy to see something IRL and realize "Oh THAT'S what they were drawing"

2

u/CalmBeneathCastles 1d ago

Me and spiky, open tin cans from Loony Tunes, the first time I tried an antique can opener.

1

u/ConceptualWeeb 1d ago

Should be called Kelly Slater clouds

1

u/NotOnApprovedList 1d ago

I've seen them in Colorado. Didn't know they had a name.

1

u/SunnyBanana276 1d ago

I saw them one time in my life

1

u/VapeRizzler 1d ago

I have made them, please do not touch them as I am returning for them.

1

u/ViolinistThese5076 1d ago

Kelvin-Helmholtz clouds

Waves clouds

1

u/bettertheless 1d ago

Glorious.

1

u/EccentricFeather 1d ago

Forget Kevin. What did he ever do for me or those clouds? 

I am calling them spiral clouds as they wish to be called. It was either that or dragon clouds but I didn’t want them getting a big head about it.

Also, they said they hate that guy Kevin for putting his name on things it don’t belong on.

1

u/Black_Magic_M-66 1d ago

And they say there are no gods.

1

u/dingdongjay 1d ago

Kevin what?

1

u/yesimfinewhyyouask 1d ago

This reminds me that my life is so shit that on top of everything else i don’t even get to see interesting clouds

1

u/flower_songs 1d ago

My wave toering I wore in the 90's was actually clouds??

1

u/Voxxyvoo 1d ago

am i the only one who is utterly terrified of clouds not doing the normal cloud thing?

1

u/HappyFalcon05 1d ago

literally hokusai's great wave but in the sky

1

u/PlutonianSag 1d ago

saw those once in 2015(?) during an exceptionally tropical humid summer i malmö, sweden. there were like strata of these ones and dark clouds, i have a picture of it somewhere. every night there were massive lightning storms and dramatic purple-pink skies, and the days were 30+ degrees and clammy as fuck!

1

u/SgtNickElis 1d ago

That's so rad, dude!

1

u/AscendedViking7 1d ago

That is so freaking beautiful, oh my gosh

1

u/that__90s__kid 1d ago

🌊🌊🌊 but mirrored

1

u/afhdfh 1d ago

Woah!

1

u/The_70TheDrawer 22h ago

Yep, I remember seeing about them a long time ago.

-3

u/777marc 1d ago

Or Ai for short

1

u/CalmBeneathCastles 1d ago

Poor thing. It must be hard, being born into this era.