Severe WX December 10 & 11, 2021 Severe Threat

[buckeye05]

It gets worse. One of the EF4 damage points in Cayce appears to have been a slabbed pole barn. So just summarize, we have EF4 damage to a farm outbuilding, and EF3 damage to a well-built institutional building that sustained at least one area of structural collapse. This is insanity.

 

[TH2002]

NWS Paducah Logic 101

EF1 damage = EF3 damage

EF4/EF5 damage = EF3 damage

 

[Shakespeare 2016]

It gets worse. One of the EF4 damage points in Cayce appears to have been a slabbed pole barn. So just summarize, we have EF4 damage to a farm outbuilding, and EF3 damage to a well-built institutional building that sustained at least one area of structural collapse. This is insanity.

This is becoming comical. Did anybody bring popcorn and snacks?

 

[andyhb]

So they classified the First Christian Church (the one that had the dome) as an elementary school and rated it 150 mph.

Like... what?

 

[TH2002]

Why does this house STILL have no DI? Did they just forget it existed?


And how the [bleep] is this supposed to be EF4 damage? Unless the rest of the structure was not bolted to the foundation, this is clearly EF5 damage.

 

[MNTornadoGuy]

Why does this house STILL have no DI? Did they just forget it existed?
View attachment 11266

And how the [bleep] is this supposed to be EF4 damage? Unless the rest of the structure was not bolted to the foundation, this is clearly EF5 damage.
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The first house does have a DI. It was not swept clean and was rated EF3. The slab was cleaned up in that aerial imagery.

 

[TH2002]

The first house does have a DI. It was not swept clean and was rated EF3. The slab was cleaned up in that aerial imagery.

If this is what you are talking about, it's not the same house:

 

[andyhb]

Meanwhile, there are still zero DIs in the vicinity of Princeton Golf Club. That entire area around Princeton is just such an absolute mess.

 

[buckeye05]

Why does this house STILL have no DI? Did they just forget it existed?
View attachment 11266

And how the [bleep] is this supposed to be EF4 damage? Unless the rest of the structure was not bolted to the foundation, this is clearly EF5 damage.
View attachment 11267
View attachment 11268

That second one was in Bremen, and most of the foundation appears to have been CMU, while a small part was a poured slab, so it wouldn’t meet the EF5 criteria for construction. With that said, part of the aforementioned slab was torn away, the ground was pretty much scoured down to bare soil, and significant debris granulation occurred, so there’s no doubt in my mind EF5 winds occurred there.

 

[andyhb]

That second one was in Bremen, and most of the foundation appears to have been CMU, while a small part was a poured slab, so it wouldn’t meet the EF5 criteria for construction. With that said, part of the aforementioned slab was torn away, the ground was pretty much scoured down to bare soil, and significant debris granulation occurred, so there’s no doubt in my mind EF5 winds occurred there.

If that's the one that has 190 mph, that foundation wasn't CMU.

 

[MNTornadoGuy]

It gets worse. One of the EF4 damage points in Cayce appears to have been a slabbed pole barn. So just summarize, we have EF4 damage to a farm outbuilding, and EF3 damage to a well-built institutional building that sustained at least one area of structural collapse. This is insanity.

For a pole barn, it was very well-anchored.

 

[Shakespeare 2016]

For a pole barn, it was very well-anchored.
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I still wouldn't think you would be able to go above a low-end EF3 would you?

 

[TornadoFan]

I know next to nothing about damage surveying, but do these survey crews have any clue what they're doing?

 

[TH2002]

Not only was a nonexistent gas station given an EF4 rating, but my home made of paper and glued with Elmers glue to cardboard sill plates was swept off its foundation. I think it deserves an EF5 rating. Somebody call NWS Paducah!

 

[buckeye05]

If that's the one that has 190 mph, that foundation wasn't CMU.

It’s not a traditional poured slab home either though, as other angles show that the foundation perimeter, where the anchors would be, was indeed CMU. The rest of the foundation appears to have been a thin concrete slab resting on top of a gravel fill that was poured within the space of the CMU foundation. Definitely weird construction, and I wouldn’t assume that it would perform the same way as a typical slab foundation that is actually poured and set in the ground.

 

[MNTornadoGuy]

It’s not a traditional poured slab home either though, as other angles show that the foundation perimeter, where the anchors would be, was indeed CMU. The rest of the foundation appears to have been a thin concrete slab resting on top of a gravel fill that was poured within the space of the CMU foundation. Definitely weird construction, and I wouldn’t assume that it would perform the same way as a typical slab foundation that is actually poured and set in the ground.

View attachment 11272View attachment 11273

The part of the slab that was broken also appears to have been rather thin and seems to have not had rebar in it.

 

[buckeye05]

The part of the slab that was broken also appears to have been rather thin and seems to have not had rebar in it.

My point exactly. With that said, the removal of the slab is still pretty impressive.

 

[akt1985]

I have the perfect music for the survey crew.

 

[buckeye05]

Not sure if this has been posted yet, but there was an additional EF4 damage point from the first long-tracker added to the DAT by MEG. The structure was a bait & tackle shop that was slabbed near Reelfoot Lake.

 

[MNTornadoGuy]

The steel-manufacturing facility in Bowling Green that got EF3 165 was well-built and well-anchored. It probably should have been rated EF4 170.

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