MNTornadoGuy
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Well this probably explains why the trenches were not considered for an EF5 rating.
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Severe WX December 10 & 11, 2021 Severe Threat
- Thread starter Richardjacks
- Start date
So should the 2011 Philadelphia tornado have been rated EF4 then? What about Jim LaDue, is he just another random weather nerd who has no idea what he's talking about?
MNTornadoGuy
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Who? This is Tim Marshall speaking.
I was referring to Jim LaDue's comment that non-DI's can still receive an EF rating, and there are many surveys where that was the case.
I feel that the damage pattern in downtown Mayfield was very complicated with very impressive violent structure damages Combined with some weak structure damage nearby. From the aerial I've seen, the First Christian Church may not in the direct center of the tornado but sometimes it's hard to tell where was the center.
There were very strong tree damage in downtown and also combined with relatively weak tree damage nearby.
I think maybe the rough urban surface disrupt the wind field of the tornado and caused damage pattern like this.
Very violent shurbby damage here. Half of It gone
destroyed large hardwood tree in front of water tower
There were very strong tree damage in downtown and also combined with relatively weak tree damage nearby.
I think maybe the rough urban surface disrupt the wind field of the tornado and caused damage pattern like this.
Very violent shurbby damage here. Half of It gone
destroyed large hardwood tree in front of water tower
Shakespeare 2016
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Tim Marshall told me some years back it was the trench digging in Philadelphia that caused that tornado to be upgraded to an EF5. So I am not sure what he is getting at.
MNTornadoGuy
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I guess today Philadelphia would not get EF5.
Shakespeare 2016
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Jim LaDue is with the SPC I believe or the NWS in Norman!! He made an EF-KIT with damage indicators.
Shakespeare 2016
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You can use non DI'S in rating a tornado.
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LaDue works at the Warning Decision Training Division here at the National Weather Center. Source: me, as I have several friends that are co-workers of his and I have met him once.
Shakespeare 2016
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OK, I wasn't so sure. Thank you for clearing that up.
Shakespeare 2016
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Discriminating EF4 and EF5 tornado damage
Discriminating EF4 and EF5 tornado Read more about ladue, debris, tornado, swept, piedmont and blanchard.
www.yumpu.com
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And again I ask, if it's "meaningless", why is it seemingly impossible to get an EF5-rated tornado these days?
A shame what Tornado Talk has become.
Remember, EF5 tornadoes can only happen in Moore, Oklahoma during the month of May and it has to sweep away a 1,000,000 sq foot mansion made of aerospace grade titanium and foot thick rebar reinforced concrete walls bolted to the foundation with anchor bolts spaced no more than an inch apart and so obliterated to the point there is no debris left behind. But if the tornado leaves as much as one blade of grass within 200 yards of the foundation, 190MPH EF4 it is.
Has it already been established that a) this slab is from cleanup and not the tornado and b) this is a subfloor?
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