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usonian

(23,125 posts)
Sat Jul 9, 2022, 05:46 PM Jul 2022

'Spectacular' Kelvin-Helmholtz wave clouds observed on California coast (in Pacifica)

https://www.sfgate.com/bayarea/article/wave-clouds-form-in-pacifica-17290572.php
Cross-posted to Weather Watchers

Named for scientists Kelvin AND Helmholtz.

The clouds form when there are different wind speeds at different altitudes, and this often happens when air blows up and over a mountain or hill.

Taken by Tara Cronin in May, 2022


Taken by Peter Harrison over Montara Mountain on July 3, 2022
18 replies = new reply since forum marked as read
Highlight: NoneDon't highlight anything 5 newestHighlight 5 most recent replies
'Spectacular' Kelvin-Helmholtz wave clouds observed on California coast (in Pacifica) (Original Post) usonian Jul 2022 OP
Wow! 2naSalit Jul 2022 #1
Great stuff. I love cloud photos, even they aren't "fine art" per se. usonian Jul 2022 #3
I've spent the whole day... 2naSalit Jul 2022 #8
I hear you loud and clear. Been sorting, and falling behinder every day. usonian Jul 2022 #12
I'll let you know what I come up with. 2naSalit Jul 2022 #14
Amazing photos! Thank you, my dear usonian! ♥ CaliforniaPeggy Jul 2022 #2
Thanks, that was a lucky find on Hacker News. usonian Jul 2022 #5
Surfs up! nt AndyS Jul 2022 #4
Cloud surfing? Not for me. NT usonian Jul 2022 #7
I once saw some like the bottom photo in Seattle The Blue Flower Jul 2022 #6
Too bad. Do you sketch? Need a new hobby? "-) usonian Jul 2022 #10
Horrible! Duppers Jul 2022 #17
Smoke finally made its way here overnight. usonian Jul 2022 #18
Wow, wow, and wow! LoisB Jul 2022 #9
Fascinating wendyb-NC Jul 2022 #11
WHOA, unbelievable HAB911 Jul 2022 #13
Textbook examples of K-H clouds! Bo Zarts Jul 2022 #15
This message was self-deleted by its author Bo Zarts Jul 2022 #16

usonian

(23,125 posts)
3. Great stuff. I love cloud photos, even they aren't "fine art" per se.
Sat Jul 9, 2022, 05:56 PM
Jul 2022

They're just wonderful!
I get some nice ones from my ridge. That's why I got the 20mm lens.

2naSalit

(99,588 posts)
8. I've spent the whole day...
Sat Jul 9, 2022, 06:05 PM
Jul 2022

Reviewing my photo archives from the last four years and I see that I have hundreds of pictures of every subject I like to take pictures of. Every subject, clouds included.

Good grief. I really need to clean up a bunch and make a line of calendars, cards, prints and maybe posters. I have captured some great pictures, my friends are threatening to have an intervention if I don't do something with them.

I have to figure out how to apply a watermark to them for online viewing before I put too much out there. I do confess to not having looked into it yet, I'm just starting to get a serious bug about it.


usonian

(23,125 posts)
12. I hear you loud and clear. Been sorting, and falling behinder every day.
Sat Jul 9, 2022, 06:35 PM
Jul 2022

Depends on your computer. I got really tired of taking screensnaps to upload reasonable size images for DU, so I found a batch photo resizer in my apps directory, and a batch photo editor that claims to watermark. These can't cost much, because I am a real cheapskate with software (I am a free and open source software fanatic)

Problem with a watermark is that if I do it on DU, I am doxxing myself.
If I set up a front company for privacy in the Cayman Islands, the government will go after me before the billionaires hiding drug money.

Good luck. Share good ideas.

usonian

(23,125 posts)
5. Thanks, that was a lucky find on Hacker News.
Sat Jul 9, 2022, 05:58 PM
Jul 2022

Nice to find it, however.
Gotta be thankful for small "wins".

The Blue Flower

(6,301 posts)
6. I once saw some like the bottom photo in Seattle
Sat Jul 9, 2022, 05:59 PM
Jul 2022

It was around sunset and there were many of them. From the center of the formation, they were like waves breaking in opposite directions. I didn't have a camera, but it was so dramatic and unusual, the sight is etched in my mind.

usonian

(23,125 posts)
10. Too bad. Do you sketch? Need a new hobby? "-)
Sat Jul 9, 2022, 06:16 PM
Jul 2022

I am old and forgetful, so I take a backpack with me when I drive.
I won't divulge the contents other than a small camera and a small bottle of oregano, which annoyingly, some places where I get pizza don't have.

Besides the phone, my "pocket" camera is a Panasonic Lumix with 8X zoom, which is really nice to have, and it fits in my pocket.

Lately, I carry the old Coolpix. I thought it was big until the new camera showed up.

I got this shot of the fire near the Mariposa Grove (Giant Sequoias) with it yesterday.

usonian

(23,125 posts)
18. Smoke finally made its way here overnight.
Sun Jul 10, 2022, 08:02 AM
Jul 2022

Lucked out until now. Firefighters are the best. Just have to trust them.

Bo Zarts

(26,235 posts)
15. Textbook examples of K-H clouds!
Sat Jul 9, 2022, 06:57 PM
Jul 2022

I have been lucky enough to see and photograph this rare cloud form twice, once in Oregon and once in Louisiana. Thanks for posting these images.

Response to usonian (Original post)

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