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FelipeFreitas

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[QUOTE = "buckeye05, postagem: 47364, membro: 264"]Grande dano de tornado em Agua Doce, Brasil, há dois dias. [/ CITAR]

At least three cities have reported damage due to this tornado. The tornado traveled approximately 40 km.

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Robinson lee

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The gas station at Newton Falls was in ruins after the tornadoScreenshot_2020_0818_171659.png
This piece of paper was inserted into the asphalt after the tornado, incredible damage
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eric11

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Today' s the 15th anniversary of the Stoughton WI F3 occurred on 8/18/2005.Another potential violent tornado, narrow but andover-like violent motion was evident as it went into downtown Stoughton.Numerous FR12 got completely destroyed or leveled though a close inspection shows the missing of some anchors in some houses.Ground scouring can be clearly seen outside town.Would like to go a 165—170mph rating
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buckeye05

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This may be the best illustration I've ever seen of just how invisible and dangerous rain-wrapped tornadoes can be. Scary stuff.

Also that photo you posted of the tree damage from the Agua Doce tornado is some of the most intense I've ever seen outside of the United States. Has a rating been assigned?
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That sounds right.

I wish sellerphoto hadn’t taken down their interactive map with the photos. Many photos are still up on the site, but many are missing. There was also an excellent high res aerial video on YouTube from Hackleburg to Athens, but it is gone as well. The damage in Moulton isn’t talked about as much, but from the air it was just as severe as Hackleburg. The ground was just blasted white.
Is this the link you mention? Some pretty impressive pics on here: https://www.sellersphoto.com/p370159506
 
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Today' s the 15th anniversary of the Stoughton WI F3 occurred on 8/18/2005.Another potential violent tornado, narrow but andover-like violent motion was evident as it went into downtown Stoughton.Numerous FR12 got completely destroyed or leveled though a close inspection shows the missing of some anchors in some houses.Ground scouring can be clearly seen outside town.Would like to go a 165—170mph rating

Thanks for posting this. This tornado just missed the house where I was living at the time (my parents still do). I couldn't see the actual tornado due to the trees that surround the house, but did get a few seconds of footage of debris suspended in the sky beneath violently rotating clouds over our house. Then the wind (inflow jet or RFD) blowing outside the basement windows, then the back side of the storm complex and damage.

 
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MNTornadoGuy

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One event that isn't talked about much in the weather community is the May 6, 1965 Twin Cities tornado outbreak. Though generally known for the Fridley tornadoes there were other violent tornadoes in rural areas. What was probably the most intense of these tornadoes was the Norwood-Young America F4 which devastated the countryside just outside the town of Norwood-Young America. Trees were shredded and debarked, a half a dozen farms were leveled (some had the farmhouse swept away), one new $60,000 brick country-home was completely leveled or swept away, cars were thrown long distances and some possible ground scouring occurred.

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One event that isn't talked about much in the weather community is the May 6, 1965 Twin Cities tornado outbreak. Though generally known for the Fridley tornadoes there were other violent tornadoes in rural areas. What was probably the most intense of these tornadoes was the Norwood-Young America F4 which devastated the countryside just outside the town of Norwood-Young America. Trees were shredded and debarked, a half a dozen farms were leveled (some had the farmhouse swept away), one new $60,000 brick country-home was completely leveled or swept away, cars were thrown long distances and some possible ground scouring occurred.

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This outbreak undoubtedly gets overshadowed by Palm Sunday that occurred only weeks earlier, and it was part of a sequence lasting from May 5-8, that produced violent tornadoes throughout the Upper Midwest. On May 8, Gregory, South Dakota was struck by an F5, the only such tornado in South Dakota's history, interestingly enough. This thing had a path length of 30 miles, quite long for tornadoes that far north which normally have path lengths in the single digits. The only informative article on that thing with damage pics I could find:

 

buckeye05

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Given the foundation type, that doesn’t look like genuine F5 damage to me. It’s odd they’d give this single tornado an F5 rating, yet all from the 1965 Palm Sunday Outbreak just weeks prior were eventually rated F4, despite producing damage that was much more impressive than Colome/Gregory.

People talk about rating inconsistencies like it’s a new problem, but it’s always been there. Even with the old scale.
 

MNTornadoGuy

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This outbreak undoubtedly gets overshadowed by Palm Sunday that occurred only weeks earlier, and it was part of a sequence lasting from May 5-8, that produced violent tornadoes throughout the Upper Midwest. On May 8, Gregory, South Dakota was struck by an F5, the only such tornado in South Dakota's history, interestingly enough. This thing had a path length of 30 miles, quite long for tornadoes that far north which normally have path lengths in the single digits. The only informative article on that thing with damage pics I could find:

That tornado was one of 2+ long-tracked violent tornadoes (or tornado families) in the NE-SD region that day. One of the other notable violent tornadoes from this outbreak was the Primrose NE tornado which basically destroyed the town of Primrose. Homes were swept away in Primrose, a truck body was carried/rolled for 2 miles, cars were carried for 400 yards, trees were debarked and denuded and ground scouring occurred.
A night of death: Tornado changed Primrose forever

This was probably the most violent tornado outbreak in the Northern Plains region on record as Grazulis lists over 6 violent tornadoes (4 of the violent tornadoes were apart of 2 long-tracked tornado families. This is only a rough estimate as the true number of violent tornadoes in these two tornado families will likely never be known.) Some of the F3s were probably violent especially the Johnstown NE tornado.
 
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MNTornadoGuy

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Given the foundation type, that doesn’t look like genuine F5 damage to me. It’s odd they’d give this single tornado an F5 rating, yet all from the 1965 Palm Sunday Outbreak just weeks prior were eventually rated F4, despite producing damage that was much more impressive than Colome/Gregory.

People talk about rating inconsistencies like it’s a new problem, but it’s always been there. Even with the old scale.
There are many inconsistencies and false information in the official NWS tornado database for May 6, 1965. Somehow the Norwood-Young America tornado got an F2 rating despite the very obvious F4 damage, injuries and fatalities are missing for some of the tornadoes, the starting and ending points are wrong for some of the tornadoes and over 8 tornadoes are not even in the database.
 
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'Ruskin Heights tornado' car damage in Martin City, MO

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Ruskin Heights gets overlooked quite a bit, which is surprising considering how well-documented it was for the time. As a Kansas City, it's a bit of a legend up here. It also had a path of nearly 70 miles, quite impressive for a typical plains tornado. Some notable pics from it:

These first 2 are of it's touchdown near an airport near Ottawa, KS. The multi-vortex structure is clearly visible in the first one, quite an impressive shot for the time period:

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This next show is the tornado in full force from a church near Spring Hill, KS.
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These remaining pics are from when the tornado crossed over into the Missouri side of Kansas City. The first is of the severely damaged high school (note the gym beans bent down, only other time I've seen this is Udall, KS) and the remaining two are of suburban areas with entire rows of homes literally swept clean from their foundations. Granted, many of these were cheaply constructed postwar homes so it wouldn't exactly take much to blow them away, but the sheer amount of homes destroyed in this manner is incredible.
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Goodness, those Ruskin Heights photos are some of the most ominous tornado photographs I've ever seen (especially being in black and white). The dramatically sculpted, low-LCL updraft base with classic RFD notch above and stout tornado below (presumably fast-moving and tilted in the direction of motion) is very similar to the appearance of many of the tornadoes and their parent storms on 4/27/11.
 
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There are many inconsistencies and false information in the official NWS tornado database for May 6, 1965. Somehow the Norwood-Young America tornado got an F2 rating despite the very obvious F4 damage, injuries and fatalities are missing for some of the tornadoes, the starting and ending points are wrong for some of the tornadoes and over 8 tornadoes are not even in the database.
As this occurred in 1965 it would've been before the establishment of the F-scale, correct? So it would have been retroactively rated based on damage pictures, right? Yeah, Fujita really was lenient with many of the "F5s" he rated in his career, and yet somehow Palm Sunday 1965 has 17 F4s and not a single F5 among them; Fujita really was weird with his ratings.
 
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