56 Years Of Tornado Tracks In America [Pic]

Submitted by: eugenius 4 years ago Science

Hmph, I would have thought there"d be a lot more over 56 years.
There are 25 comments:
Male 4,893
Wow CrakrJak...You are soooooo smart. You must know, like....everything. Thank god that you are here to fill the comments section of every post, and educate the rest of us simpletons. Also, I should congratulate you for having opinions... that are far superior!
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Male 17,512
Since meteorologists aren`t even certain as to the details of how a tornado forms, grows and dissipates, other than generalities. A lot of computer modelling has been done, and they believe they know the ingredients a funnel needs to form, that is quite a ways removed from knowing the `recipe` and how it`s `cooked`. Yes I`m using kitchen metaphors here for the ease of understanding for the sake of general IAB populace.

If meteorologists knew more they`d be able to forecast tornadoes much more accurately and give people more than just a few minutes warning, in some cases there`s been no warning at all. The `holy grail` of weather prediction would be being able to warn people 30 minutes to an hour ahead, and many scientists believe that will one day be possible.

I truly do wish that they figure the chaotic mystery of tornadoes out, but denying the thermal effects of rivers on our atmosphere will not help in that endeavor.
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Male 17,512
mesovortex: Yes, I read that. They are calling it a `Myth` because they don`t want people lulled into a false sense of security. I understand that they want to err on the side of caution, but it`s naive to believe rivers don`t effect their local climate.

The evidence for what I`m saying is plain as day, right there in front of your face. Gaps following the shape of the main rivers and tributaries.

Rivers that are wide enough do produce a onshore-offshore wind cycle typical of seacoasts and lake shores. Rivers are conveyors of heat and that does thermally effect the atmosphere above them. Rivers shape the landscape they flow through and do modify the climate of their region, creating local wind and rainfall patterns.
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Male 458
@CrakrJak

You are a creationist so I don`t blame you for being scientifically illiterate. The idea that tornadoes can`t cross rivers is a myth:

From the NWS:
"Myth: "Tornadoes don`t cross rivers." Although some landforms may influence the distribution of tornadoes, rivers do not have any clear effect on them. The great Tri-State tornado of 1925, the deadliest tornado ever recorded, crossed both the Mississippi and the Wabash Rivers."
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Male 17,512
DuckBoy87: Sorry, you are correct.

There are very dark gray lines, barely visible, on the map. I had to enlarge the map quite a bit to even see them.

That doesn`t change the fact that you can see the outlines of several rivers w/o any visual evidence of gray lines in those areas of the map.
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Male 3,415
CrackrJak.. There are state boundaries on this map, unless the Mason-Dixon line is suddenly a river...
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Male 17,512
mesovortex: No, there are no state boundaries on that map at all, except for the rivers.

Yes, tornadoes can and have crossed rivers, usually they are the really big F4 and F5 strength ones. Smaller funnels, for some odd reason, don`t usually survive crossing large rivers.

I understand why meteorologists wish to `debunk` this effect, they don`t want people getting hurt over a false sense of security. All tornadoes should be taken seriously, Heed all warnings and sirens.

But the phenomenon does have some merit to it as evidenced by this map. Only about 30 tornadoes have crossed the Mississippi river, in a hundred years, out of several hundred funnels that met it`s edge and dissipated.
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Male 458
@LazyMe484

Indirectly. Elevation usually means that as you go up the air is more and more stable - however the Smoky Mountains got an F4 tornado on Hatcher Mountain in 2011, and so did Lookout Mountain near Chattanooga in 2011. Tornadoes also happen out west on the high plains at elevations above 7,000 ft. Typically tornadoes don`t happen often as air goes up in elevation because the air becomes more stable - but if the conditions are right a tornado can happen on land or water and even on a mountain.
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Male 458
@5cats:

This graph stops before 2011 - when we had a few record outbreaks and a large number of deaths due to tornadoes. If you include 2010 and 2011, the numbers are clearly going up.

@CrackrJak

That is a myth. The reason why it is outlined is that there is that the state boundaries are put on the map. If you follow that outline, plenty of tornadoes crossed the MS river. In fact one of the worst tornadoes in history, the Tri-State Tornado, crossed the MS river north of Cairo, IL.
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Male 36,426
Cool!

Nice catch @CrakrJak! Possibly because the land starts sloping down? It`s plainly visible (now that you pointed it out of course!) in the pattern.

It seems that, overall, the total number and severity of tornados is down... Global Warming!!!
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Male 1,511
Cool, I remember that little one by Portland Oregon. It took off some roofs a few miles from my house.
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Male 56
that little spot in central indiana that has basically zero tornados...thats where I live! Hooray!
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Male 17,512
If you look closely you can see the Mississippi river sort of outlined. Not very many tornadoes cross it.
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Male 14,330
@Stonardsftw

Sliding shaking whatever.

@mamba

Never said it was good but at least you can go underground for a tornado earthquake not so much. The fault lines don`t lie it`s not if it`s when.
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Female 2,602
Ah, I see. Thanks.
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Male 53
The Appalacian mountains can explain the hole near the eastern US
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Female 2,602
I wonder what`s so special about that area surrounding the border of Kentucky and West Virginia at the top right of the map. It`s so dark from having so little recorded activity that it sticks out like a sore thumb.
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Male 628
`Enjoy falling into the ocean!!`
Well if that actually happened, enjoy losing the biggest contributor of your country`s income, rehousing the hqs of the USA`s biggest companies at a cost of billions of dollars and rehousing 38mil people out of your own pocket.... just sayin =p
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Male 15,510
You can tell who are Gods favorites
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Male 10,440
Is it the terrain that does that?
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Male 10,440
Could someone explain what`s going on with that hole around West Virginia?
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Male 321
@McGovern1981
Lolno, there is almost no falling.
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Male 14,330
vv Enjoy falling into the ocean!!
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Male 1,754
The Midwest and East gets pounded. I`ll enjoy my predictable sunny weather with little humidity here in California, thanks.
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Male 1,620
Link: 56 Years Of Tornado Tracks In America [Pic] [Rate Link] - Hmph, I would have thought there`d be a lot more over 56 years.
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