Significant Tornado Events

[Juliett Bravo Kilo]

Yeah, you're right. I checked Landsat this morning and the track(s) looked fairly old even as far back as 1982. So, I ended up going down the rabbit hole and now I wish Josh had never made that post lol. I'm still poking around, but here's what I found so far. It's hard to say for certain, but it appears the super-long Sainte-Anne-du-Lac track is at least three tornadoes.

The first is indicated by the green arrow, but I'll circle back to that in a minute. The second looks like it starts just a little west of the Gens de Terre River (blue arrow) and lifts south of the Mitchinamecus Reservoir (red arrow), after which the third tornado starts and continues to just beyond the eastern shore of Kempt Lake (forgot to mark that one, but it's in the upper right corner). That'd make the second tornado ~53 miles and the third ~44 miles.

Here's a closer view of the (likely?) break between the second and third paths.

Getting back to the first tornado (green arrow in the first image), here's a wider view of that area with the same section of track again marked by a green arrow. The purple arrow is presumably from the same family as well but it's a bit hard to make out specific details re: where the paths start/end. The yellow arrow is another subtle little area that may or may not be a path (I'm inclined to say no).

Anywho, the very first image is from 3/23/73. The second is 2/24/73, which is as far back as I was able to identify the tracks. The last usable images before that, which I think were like June or July of '72, didn't show any as far as I could see. Altogether, that's at least 140 miles of (broken) tornado tracks, maybe somewhat longer.

Now, the track denoted by the yellowish arrows on Josh's map (which looks to have passed directly over Lizotte) is clearly visible in this image from 2/8/74, but doesn't seem to appear on earlier imagery (though it's hard to tell for certain because they're quite cloudy). This is a distance of right around 65 miles, so very roughly in the same neighborhood as Grand Valley.

I haven't had time to look any further yet, but man.. consider me intrigued.

I can't find anything about this on wikipedia....Canada has a lot of unrated tornadoes due to being poorly documented and occurring way out in the boonies, I did find mention of a tornado in Quebec in 1975 but nothing in '73 or '74. Weird....

 

[Austin Dawg]

I'm not positive, but I think that last pic may possibly be from Rainsville.

I wish there was someway we could make a in-depth documentary about each one of those F5s from 4p-27-2011. Maybe make it a whole series so that we could tie it all together so you wouldn't be limited to just one episode per her tornado if it needed more than one to really go in depth on that storm itself and come up with some kind of summation in the final episode. I would like to see more about the scientific aspects than the human event, that/s tricky, I don't know how you make those bridge into one project that you could get the funding for and that people would actually watch but I think it would be fascinating. Almost makes me wanna come out of retirement to see if I could put it together but I would love working on the team

 

[andyhb]

I wish there was someway we could make a in-depth documentary about each one of those F5s from 4p-27-2011. Maybe make it a whole series so that we could tie it all together so you wouldn't be limited to just one episode per her tornado if it needed more than one to really go in depth on that storm itself and come up with some kind of summation in the final episode. I would like to see more about the scientific aspects than the human event, that/s tricky, I don't know how you make those bridge into one project that you could get the funding for and that people would actually watch but I think it would be fascinating. Almost makes me wanna come out of retirement to see if I could put it together but I would love working on the team

This already basically exists on TornadoTalk: https://www.tornadotalk.com/overview-of-the-april-25-28-2011-super-outbreak/

 

[Sawmaster]

This already basically exists on TornadoTalk: https://www.tornadotalk.com/overview-of-the-april-25-28-2011-super-outbreak/

Paywalled

 

[joshoctober16]

Ok here is what it seems i could find (if there's any images before 1984 it would help) , anyhow

Black line = Core
White line = Possible core

Light Blue outline = Possible Path
Blue outline = EF0-EF3 damage mark
Red outline = EF2-EF5 damage mark

Tornado 1

Name: Lac monredon Tornado
Location:Sheerway Canada
Path Width:1.24 mile
F rating:F0-F3
Path Lenght:9.95-17.78 miles
notes: one of the only 2 tornadoes that went over a mile wide and the only tornado that seem to have hit a populated area.

Tornado 2

Name: Lac moorehead Tornado
Location: (middle of nowhere)Canada
Path Width:0.5-0.53 mile
F rating:F2-F5
Path Lenght:3.11-11.13 miles
Notes:likely first EF2+ tornado of the bunch.

Tornado 3

Name: Lac Kondiaronk
Location: (middle of nowhere)Canada
Path Width:0.21-0.32 mile
F rating:F2-F5
Path Lenght:1.56-6.03 miles
notes:starting could be downburst damage?

Tornado 4

Name: Lac Cox - Lac beezwhanger - Lac Nalzen Tornado
Location: (middle of nowhere)Canada
Path Width:0.8 mile
F rating:F2-F5
Path Lenght:18.7-23.27 miles
notes: seems to be from a second supercell

Tornado 5

Name: Lac Valduc - South Lac Cleghorn Tornado
Location: (middle of nowhere)Canada
Path Width:0.37 mile
F rating:F2-F5
Path Lenght:5.12 miles
notes:might of been on the ground the same time as tornado 7

Tornado 6

Name: Lac Alvignac - Lac Titch Tornado
Location: (middle of nowhere)Canada
Path Width:0.17-0.21 mile
F rating:F0-F3
Path Lenght:1.61-5.53 miles
notes:might of been on the ground the same time as tornado 7

Tornado 7

Name: Lac Cleghorn - Lac Silly - Lac Tonio Tornado
Location:North of Manawan Canada
Path Width:1.26-1.28 mile
F rating:F2-F5
Path Lenght:110.31-117.8 miles (note for later)
notes:will post more detail later.

Tornado 8

Name: Lac Chain - Lac du Voilier - Lac Buisson Tornado
Location: (middle of nowhere)Canada
Path Width:0.78 mile
F rating:F2-F5
Path Lenght:22.1-24.42 miles
notes:likely second tornado of the second supercell.

Tornado 9

Name: Petit Lac Gauthier Tornado
Location: (middle of nowhere)Canada
Path Width:0.46 mile
F rating:F2-F5
Path Lenght:5.12 miles
notes:did a upsidown V shape path (similar to moore 2013 loop)

more info on possible other tornadoes and Tornado number 7 later on

 

[joshoctober16]

Ok here is what it seems i could find (if there's any images before 1984 it would help) , anyhow

Black line = Core
White line = Possible core

Light Blue outline = Possible Path
Blue outline = EF0-EF3 damage mark
Red outline = EF2-EF5 damage mark

Tornado 1
View attachment 15493
Name: Lac monredon Tornado
Location:Sheerway Canada
Path Width:1.24 mile
F rating:F0-F3
Path Lenght:9.95-17.78 miles
notes: one of the only 2 tornadoes that went over a mile wide and the only tornado that seem to have hit a populated area.

Tornado 2
View attachment 15494
Name: Lac moorehead Tornado
Location: (middle of nowhere)Canada
Path Width:0.5-0.53 mile
F rating:F2-F5
Path Lenght:3.11-11.13 miles
Notes:likely first EF2+ tornado of the bunch.

Tornado 3
View attachment 15495
Name: Lac Kondiaronk
Location: (middle of nowhere)Canada
Path Width:0.21-0.32 mile
F rating:F2-F5
Path Lenght:1.56-6.03 miles
notes:starting could be downburst damage?

Tornado 4
View attachment 15496
Name: Lac Cox - Lac beezwhanger - Lac Nalzen Tornado
Location: (middle of nowhere)Canada
Path Width:0.8 mile
F rating:F2-F5
Path Lenght:18.7-23.27 miles
notes: seems to be from a second supercell

Tornado 5
View attachment 15497
Name: Lac Valduc - South Lac Cleghorn Tornado
Location: (middle of nowhere)Canada
Path Width:0.37 mile
F rating:F2-F5
Path Lenght:5.12 miles
notes:might of been on the ground the same time as tornado 7

Tornado 6
View attachment 15498
Name: Lac Alvignac - Lac Titch Tornado
Location: (middle of nowhere)Canada
Path Width:0.17-0.21 mile
F rating:F0-F3
Path Lenght:1.61-5.53 miles
notes:might of been on the ground the same time as tornado 7

Tornado 7
View attachment 15499
Name: Lac Cleghorn - Lac Silly - Lac Tonio Tornado
Location:North of Manawan Canada
Path Width:1.26-1.28 mile
F rating:F2-F5
Path Lenght:110.31-117.8 miles (note for later)
notes:will post more detail later.

Tornado 8
View attachment 15500
Name: Lac Chain - Lac du Voilier - Lac Buisson Tornado
Location: (middle of nowhere)Canada
Path Width:0.78 mile
F rating:F2-F5
Path Lenght:22.1-24.42 miles
notes:likely second tornado of the second supercell.

Tornado 9
View attachment 15501
Name: Petit Lac Gauthier Tornado
Location: (middle of nowhere)Canada
Path Width:0.46 mile
F rating:F2-F5
Path Lenght:5.12 miles
notes:did a upsidown V shape path (similar to moore 2013 loop)

more info on possible other tornadoes and Tornado number 7 later on

part 2 of info

possible extra tornadoes
there are 2 marks that might be from 2 tornadoes

Possible Tornado 1

Name: Possible Tornado 1 (no lakes to cross over unlike all the others)
Location: (middle of nowhere)Canada
Path Width:0.24 mile
F rating:F0-F3
Path Length:1.36 miles
notes: touch down as tornado 1 was roping out.

Possible Tornado 2

Name: Possible Tornado 1 (no lakes to cross over unlike all the others)
Location: (middle of nowhere)Canada
Path Width:0.28 mile
F rating:F0-F3
Path Length:1.66 miles
notes: right when it died tornado 9 formed

 

[joshoctober16]

part 2 of info

possible extra tornadoes
there are 2 marks that might be from 2 tornadoes

Possible Tornado 1
View attachment 15502
Name: Possible Tornado 1 (no lakes to cross over unlike all the others)
Location: (middle of nowhere)Canada
Path Width:0.24 mile
F rating:F0-F3
Path Length:1.36 miles
notes: touch down as tornado 1 was roping out.

Possible Tornado 2
View attachment 15503
Name: Possible Tornado 1 (no lakes to cross over unlike all the others)
Location: (middle of nowhere)Canada
Path Width:0.28 mile
F rating:F0-F3
Path Length:1.66 miles
notes: right when it died tornado 9 formed

Damage mark of Tornado 1 and possible Tornado 1

Damage mark of Tornado 2 , Tornado 3 , Tornado 4 , Tornado 5 and Start of Tornado 7

Damage mark of end of Tornado 5 , Tornado 6 and start of Tornado 7

Damage mark of Tornado 8

Damage mark of Tornado 9 and possible Tornado 2

Other notes
Tornado 1 is the only tornado to have seem to hit a area were people live as seen here


before i go talk about tornado 7 last thing to say is , not one of these tornadoes show up as a official tornado from 1979-1985

 

[joshoctober16]

View attachment 15504
Damage mark of Tornado 1 and possible Tornado 1
View attachment 15505
Damage mark of Tornado 2 , Tornado 3 , Tornado 4 , Tornado 5 and Start of Tornado 7
View attachment 15506
Damage mark of end of Tornado 5 , Tornado 6 and start of Tornado 7
View attachment 15507
Damage mark of Tornado 8
View attachment 15508
Damage mark of Tornado 9 and possible Tornado 2

Other notes
Tornado 1 is the only tornado to have seem to hit a area were people live as seen here
View attachment 15509

before i go talk about tornado 7 last thing to say is , not one of these tornadoes show up as a official tornado from 1979-1985 View attachment 15510
View attachment 15511

Tornado 7
Name: Lac Cleghorn - Lac Silly - Lac Tonio Tornado
Location:North of Manawan Canada
Path Width:1.26-1.28 mile
F rating:F2-F5
Path Lenght:110.31-117.8 miles (note for later)
notes:Segment 1 and Segment 2 notes if its 2 tornadoes

Tornado 7 segment 1
Name: Lac Cleghorn - Lac Petawaga - Lac Bondy (segment/Tornado)
Location: (middle of nowhere)Canada
Path Width:1.19 mile
F rating:F2-F5
Path Lenght:73.91-75.23 miles
notes: see under

Tornado 7 segment 2
Name: Lac Silly - Lac Waterloo - Lac Tonio (segment/Tornado)
Location:North of Manawan Canada
Path Width:1.26-1.28 mile
F rating:F2-F5
Path Lenght:34.83-41 miles
notes: see under


its hard to know where it started with all the lakes , but this appeares to be the start of the longest track one

tornado moves south goes likely violent , and the first area that is iffy if its a mark or not shows up (likely still all one tornado)
Tornado kept making a visible mark for miles after the first iffy point

after that there is a stop in the damage mark , it is hard to tell if it lifted or not or just got weaker , the tornado wasnt shrinking but growing in width before the visible mark stop , its to note a lot of the hackleburg EF5 EF0-EF1 start point has no mark at all , its possible the tornado just weaken to a F0 but still likely had weak damage to trees this is the end of segment 1 and the start of segment 2

start of segment 2 starts with some very wide EF2+ damage for some long stretch

somwheres here the tornado or tornado long track number 2 likely lifted.

there are 4 different split marks , its hard to know what one is the tornado or not


no outline to show the mark

the segment 1 - segment 2 spot
the other iffy spot

attachment limit has to make me do a second part

 

[joshoctober16]

Tornado 7
Name: Lac Cleghorn - Lac Silly - Lac Tonio Tornado
Location:North of Manawan Canada
Path Width:1.26-1.28 mile
F rating:F2-F5
Path Lenght:110.31-117.8 miles (note for later)
notes:Segment 1 and Segment 2 notes if its 2 tornadoes

Tornado 7 segment 1
Name: Lac Cleghorn - Lac Petawaga - Lac Bondy (segment/Tornado)
Location: (middle of nowhere)Canada
Path Width:1.19 mile
F rating:F2-F5
Path Lenght:73.91-75.23 miles
notes: see under

Tornado 7 segment 2
Name: Lac Silly - Lac Waterloo - Lac Tonio (segment/Tornado)
Location:North of Manawan Canada
Path Width:1.26-1.28 mile
F rating:F2-F5
Path Lenght:34.83-41 miles
notes: see under

View attachment 15512
its hard to know where it started with all the lakes , but this appeares to be the start of the longest track one
View attachment 15513
tornado moves south goes likely violent , and the first area that is iffy if its a mark or not shows up (likely still all one tornado)
View attachment 15514Tornado kept making a visible mark for miles after the first iffy point
View attachment 15515
after that there is a stop in the damage mark , it is hard to tell if it lifted or not or just got weaker , the tornado wasnt shrinking but growing in width before the visible mark stop , its to note a lot of the hackleburg EF5 EF0-EF1 start point has no mark at all , its possible the tornado just weaken to a F0 but still likely had weak damage to trees this is the end of segment 1 and the start of segment 2
View attachment 15516
start of segment 2 starts with some very wide EF2+ damage for some long stretch
View attachment 15517
somwheres here the tornado or tornado long track number 2 likely lifted.
View attachment 15518
there are 4 different split marks , its hard to know what one is the tornado or not

View attachment 15519
no outline to show the mark
View attachment 15520
the segment 1 - segment 2 spot
View attachment 15521 the other iffy spot

attachment limit has to make me do a second part

Overall image

Segment 1

Segment 2
Segment 1 no outline
Segment 2 no outline
South curve with only core line
and here is the google earth file for you guys to check out hope the link works

 

[joshoctober16]

other impressive tornado familys found nearby (unsure if they are known or not but)


possible one in light blue
all of them are before 1992

 

[joshoctober16]

Yeah, you're right. I checked Landsat this morning and the track(s) looked fairly old even as far back as 1982. So, I ended up going down the rabbit hole and now I wish Josh had never made that post lol. I'm still poking around, but here's what I found so far. It's hard to say for certain, but it appears the super-long Sainte-Anne-du-Lac track is at least three tornadoes.

The first is indicated by the green arrow, but I'll circle back to that in a minute. The second looks like it starts just a little west of the Gens de Terre River (blue arrow) and lifts south of the Mitchinamecus Reservoir (red arrow), after which the third tornado starts and continues to just beyond the eastern shore of Kempt Lake (forgot to mark that one, but it's in the upper right corner). That'd make the second tornado ~53 miles and the third ~44 miles.

Here's a closer view of the (likely?) break between the second and third paths.

Getting back to the first tornado (green arrow in the first image), here's a wider view of that area with the same section of track again marked by a green arrow. The purple arrow is presumably from the same family as well but it's a bit hard to make out specific details re: where the paths start/end. The yellow arrow is another subtle little area that may or may not be a path (I'm inclined to say no).

Anywho, the very first image is from 3/23/73. The second is 2/24/73, which is as far back as I was able to identify the tracks. The last usable images before that, which I think were like June or July of '72, didn't show any as far as I could see. Altogether, that's at least 140 miles of (broken) tornado tracks, maybe somewhat longer.

Now, the track denoted by the yellowish arrows on Josh's map (which looks to have passed directly over Lizotte) is clearly visible in this image from 2/8/74, but doesn't seem to appear on earlier imagery (though it's hard to tell for certain because they're quite cloudy). This is a distance of right around 65 miles, so very roughly in the same neighborhood as Grand Valley.

I haven't had time to look any further yet, but man.. consider me intrigued.

hard to see but there is a mark that curves south

 

[joshoctober16]

Essentially what I'd call a "brutalist" or "extreme conformist" interpretation of the EF scale.

155 mph for the Mayfield Consumer Products factory (even NWS Paducah gave it a 170MPH EF4 rating for the record),
130 mph for the water tower,
158 mph for the obliterated flooring store...

I could go on forever about the absurdly low wind speed estimates (and that one particular quote) but I think this sums it up better:

to make things worse , every EF5 of 2007-2013 would not be rated EF5 today.... just cause of Vilonia and Mayfield reasons used on them (blue is Vilonia and Mayfield reasons) magenta is a (bowling green EF3 reason) correct me if im wrong with some facts here (like if some did do severe granulation or not)

 

[locomusic01]

View attachment 15533hard to see but there is a mark that curves south

Yeah, there are several subtle marks like that that need further investigation. Certain sections are more or less visible in different satellite images through the seasons/years but I haven't had time to really compare them yet. If you'd like to play around with it you can find all the older Landsat data on EarthExplorer: https://earthexplorer.usgs.gov/

Choose your search area on the first tab (easiest to navigate to it on the map and click "Use Map") and your date range, then under the "Data Sets" tab select Landsat -> Landsat Collection 2 Level-1 -> Landsat 1-5 MSS C2 L1. Then you can go to "Results" and click the little footprint icon under each return to see the area the image covers. You'll need to download the GeoTIFF files to see them in full-res.

 

[Lake Martin EF4]

to make things worse , every EF5 of 2007-2013 would not be rated EF5 today.... just cause of Vilonia and Mayfield reasons used on them (blue is Vilonia and Mayfield reasons) magenta is a (bowling green EF3 reason) correct me if im wrong with some facts here (like if some did do severe granulation or not)
View attachment 15535

They never even took the scouring into consideration for Mayfield so all of those green "scouring"s wouldn't count towards EF5.

 

[locomusic01]

other impressive tornado familys found nearby (unsure if they are known or not but)

I noticed the same thing in parts of Ontario when I was researching 5/31/85 - it shouldn't be surprising to see a bunch of undocumented tornadoes in such incredibly remote areas, but it caught me off-guard a bit.

 

[joshoctober16]

They never even took the scouring into consideration for Mayfield so all of those green "scouring"s wouldn't count towards EF5.

it was some of the main reasons why 2 of the EF4 on may 24 2011 didn't get a EF5 rating

 

[tornado examiner]

probably should go to the EF-scale rating debate thread

 

[Lake Martin EF4]

View attachment 15536

IIRC the house in this photo actually did have scouring but it was cropped out of the photo.
EDIT: Actually it was at a different angle that didn't show that scouring. There was definitely scouring there:

 

[joshoctober16]

IIRC the house in this photo actually did have scouring but it was cropped out of the photo.

wait really? any full version of this photo? also man that seems a bit suspicious to just... cut off the scouring part nws...

 

[joshoctober16]

a other thing i might of notice is that Cordova might of been a tornado family of 3? the way the paths go north and then no damage to suddenly the damage appearing more to the south seems like a tornado family.