Severe Weather Threat 5/19-5/22/2024

[vanni9283]

View attachment 27522View attachment 27523
Just a reminder than winds below that level not always, but at most time would be only stronger. And recent findings more and more suggest that the wind height defined in EF scale(10m) is more likely to be the level most tornado's winds peaks.

So it's possible that ground level winds could have exceeded 300 mph???

 

[Maxis_s]

So it's possible that ground level winds could have exceeded 300 mph???

Probably not immediately at the surface due to friction. My guess about that chart is that it increases as it goes down, then becomes much less strong in the lowest few meters due to friction. Either that or the EF scale's windspeed estimates are wrong.

 

[vanni9283]

Probably not immediately at the surface due to friction. My guess about that chart is that it increases as it goes down, then becomes much less strong in the lowest few meters due to friction. Either that or the EF scale's windspeed estimates are wrong.

I think the latter is true. I've gone on record saying that the estimated wind speeds on the current EF-scale are definitely too low.

 

[SGFmoTwister]

The US is filled with towns of those names.

47 Springfield's

 

[Maxis_s]

I just realized a really interesting coincidence.
The Greensburg EF5 ended what was at the time the longest F5/EF5 drought, the day after the anniversary of the previous F5/EF5, which was in Moore.
The Greenfield tornado occurred on the day after the anniversary of the previous F5/EF5, which was also in Moore.
Both of these towns have "Green" at the start of the name.

And just like Greensburg, it was hit due to an occlusion...

 

[Kds86z]

And just like Greensburg, it was hit due to an occlusion...

Talk about bad timing smh

 

[CheeselandSkies]

And just like Greensburg, it was hit due to an occlusion...

Ahhhhhh, that's from the DOW. I had just skimmed stills of similar images in this thread and wondered why I never saw a couplet like that on RadarScope during my chase.

 

[pohnpei]

For any level above 10m(which is the definition of EF scale winds), winds likely overall increased with height become lower. But it may not not continuely increase or begin to drop below 2-3m. But we don't have enough evidence to say anything for certain at this stage. The best case was Goshen Country WY tornado 2009 with DOW at close range and TIV since it. The wind TIV scanned at 3m level was slightly stronger than DOW's lowest level sacn which was around 30m.

So it's possible that ground level winds could have exceeded 300 mph???

 

[Maxis_s]

Does anyone know where I can download the DOW dataset for yesterday? Everyone's been posting about it but not a single person will send the link.

 

[OHWX97]

Damage in the first video is particularly impressive.

 

[Maxis_s]

Damage in the first video is particularly impressive.

What were the tires in the video from? Wheelbarrows or tractors? If it's the latter that's some ridiculous damage.

 

[TH2002]

Damage in the first video is particularly impressive.

About 99% sure it's the property along Kent Avenue (coordinates: 41°15'49.04"N 94°30'28.48"W) right in the middle of where the CC drop 'peaked' (or bottomed out, technically) SW of Greenfield.

 

[TH2002]

There are still at least three farmsteads along Jordan Ave about five and a half miles SW of Greenfield that were either narrowly missed or directly hit. Hopefully the scene isn't similar to what we saw above...

 

[buckeye05]

Was the tornado that caused major damage near Corning the same one that hit Greenfield?

 

[andyhb]

Was the tornado that caused major damage near Corning the same one that hit Greenfield?

There were two tornadoes near Corning, one being the Carbon tornado and the other being the Greenfield tornado in its earlier stages. So I guess the answer is... "yes"? The tornado that was closer to Corning was the Greenfield tornado though.

 

[andyhb]

And also yes the Greenfield tornado was the one responsible for the death of that woman. Her car was tossed off of Highway 148 north of Corning and, well, we've seen the aftermath.

 

[Kds86z]

5 dead and at least 35 hurt as tornadoes ripped through Iowa, officials say

Authorities in Iowa continued search and rescue efforts after a tornado devastated the town of Greenfield and killed an undisclosed number of people.

apnews.com

 

[172556]

Sorry if this has been posted and I missed it. The woman killed north of Corning was not a chaser, she was on her way home from work at Southwest Iowa Egg Coop.

Donate to Support Monica's Family in Their Time of Loss, organized by Fatima Bolanos

As many of you know, our family suffered the unthinkable on May 21st, 202… Fatima Bolanos needs your support for Support Monica's Family in Their Time of Loss

www.gofundme.com

 

[Maxis_s]

More damage photos. First two pictures are a home (perhaps two different homes?) outside of Greenfield, last picture is a tree that seems to be completely debarked with limbs intact that are also debarked.

 

[Maxis_s]

Uh...