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Severe Weather Threat May 17-19, 2025

Mentioned this in the EF debate thread, but I'm kind of wondering if part of the reason Marion got the rating it did was for model verification. It happened right in the path of where that long track isolated supercell was predicted to be. Can't find much on Google, but what I did find made it seem like damage surveys are one tool used for verification.
 
Grand Poo Bah said:
Mentioned this in the EF debate thread, but I'm kind of wondering if part of the reason Marion got the rating it did was for model verification. It happened right in the path of where that long track isolated supercell was predicted to be. Can't find much on Google, but what I did find made it seem like damage surveys are one tool used for verification.
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I know I saw impressive tree damage somewhere in pictures from it. Or am I crazy?
 
joshoctober16 said:


i think this is the first anticyclonic tornado drone intercept

man at (2:10 - 2:15) and (2:21- 2:26) and (2:40 - 2:45) and (3:25 - 3:28) it throws some objects so fast
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Oh my gosh this is nuts! In the beginning you can see cycloidal motion in the grass even though there's no condensation funnel. Then the way little powerful subvortices just briefly become visible out of nowhere, almost like they're pulling condensation off the surface. Then in the part you timestamped I can't believe how small the diameter is. I knew tornadoes could be this small but seeing it from above really puts it into perspective.

Absolutely fascinating stuff.
 
CheeselandSkies said:
Realized I posted this link in the Severe Weather 2025 thread, not this one.

This might be my favorite video (from my own footage) yet. 10x timelapse from the side window GoPro again, but zoomed in on the tornado and set to music.

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Beautiful footage, dude. Love how you got some of the meso structure in there. You should email it to Leigh Orf! I know he likes comparing footage like this to his models based on the video Pecos Hank made with him.
 
Despite the crazy anvil crawlers a few minutes earlier, after I got back to US 54/400 and headed east toward Pratt shortly before 11 PM, the lightning was not illuminating a whole lot under the cloud bases at least during the time I was recording with my GoPro clamped to the driver's side window looking to the north.

This is the best frame I was able to find with what looks like some RFD cut "horseshoe" structure at the bottom center, so the 10:47-11:08 EF3 that later went just north of Iuka would be in there somewhere. Yikes.

GX010545.MP4.23_01_49_17.Still001.jpg
 
CheeselandSkies said:
Passed the Dominator at 9:45 in the main video. Rolled down the window and shouted "It's the DOMINATOR!," although I doubt anyone heard me.



Looking at the people standing around it, I can't see Reed among them, though.
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8:23-8:25 in, that's me (us) in the white Volvo SUV.
 
andyhb said:
8:23-8:25 in, that's me (us) in the white Volvo SUV.
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Cool!

Re-made the timelapse to include both tornadoes, plus the supercell structure southwest of Freedom, and lightning from the nocturnal KS beast near Cullison.



...and a "short" (vertical format) timelapse from the camcorder video, position-tracked to keep the tornado in frame:

 
I notice, 6 days later there's still no official acknowledgement of the existence of the tornadoes near Arnett, despite how widely visible they were and how many chasers were on them.

List of tornadoes in the outbreak of May 18–21, 2025 - Wikipedia

en.wikipedia.org en.wikipedia.org

For the office generally considered to be based at the quintessential heart of "Tornado Alley," OUN is notoriously slow about releasing survey information, unless it was a catastrophic event (such as Moore) where the public/media will be clamoring for a rating. We might have to wait for the official Storm Data at the end of the year.
 
CheeselandSkies said:
I notice, 6 days later there's still no official acknowledgement of the existence of the tornadoes near Arnett, despite how widely visible they were and how many chasers were on them.

List of tornadoes in the outbreak of May 18–21, 2025 - Wikipedia

en.wikipedia.org en.wikipedia.org

For the office generally considered to be based at the quintessential heart of "Tornado Alley," OUN is notoriously slow about releasing survey information, unless it was a catastrophic event (such as Moore) where the public/media will be clamoring for a rating. We might have to wait for the official Storm Data at the end of the year.
Click to expand...

Yeah wtf? I checked and couldn’t find a rating for it.
 
Kds86z said:
Yeah wtf? I checked and couldn’t find a rating for it.
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Did a little digging, apparently a PNS was released on Tuesday indicating at least four tornadoes were confirmed, one of them being rated EF2 (presumably the longest-lived or "main" Arnett tornado). However no other information, including tracks, has been released thus far.
 
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