These pictures were taken today in Oklahoma City and I am both baffled and curious as to what formation this may be. I was wondering if anyone had any idea?
Thank you!
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1$\begingroup$ About what time will help in sourcing radar and satellite data to match. You're talking about the wide arc, yes? $\endgroup$– JeopardyTempestCommented Apr 27, 2018 at 4:18
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$\begingroup$ It appears to me to possibly be either a gravity wave or an outflow boundary. As @JeopardyTempest indicated, satellite and radar data would help. If you don't know where to find that information, you could give us a date and approximate time and we may be able to. $\endgroup$– DavidHCommented Apr 27, 2018 at 12:02
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Well, after a bit of research, I stumbled upon the following image:
This is from a blog of two storm chasers Roger and Elke who I believe witnessed the same cloud formation as you. In the following link:
http://stormeyes.org/latest/tag/left-moving-supercell/
They refer to the formation as a 'rear flank arc cloud'.
So in conclusion I believe, the formation is a kind of arcus cloud. You can learn more about arcus clouds on wikipedia by following the link:
https://en.wikipedia.org/wiki/Arcus_cloud
I hope I have been of help.
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$\begingroup$ Useful searching... but though it may or may not be an arc cloud, it does not appear to be associated with any storm structure such as would entail a rear-flank downdraft. Thanks for the input! $\endgroup$ Commented May 10, 2018 at 23:31
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1$\begingroup$ @JeopardyTempest - to me it looks like a Arcus cloud - en.wikipedia.org/wiki/Arcus_cloud. $\endgroup$– user1066Commented May 27, 2018 at 16:21
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$\begingroup$ And these are common in gust fronts and they are sometimes known as shelf clouds. $\endgroup$– user1066Commented May 27, 2018 at 16:22