Questions tagged [tornado]

The tag has no usage guidance.

Filter by
Sorted by
Tagged with
21
votes
1answer
15k views

Do tornadoes have eyes?

In the movie Into the Storm (2014) near the end, storm chaser Pete sees the eye of a massive tornado. In 1928 (real life), Will Keller was in his barn when a huge tornado passed through. He reported ...
19
votes
1answer
1k views

Why is there no middle ground between tornadoes and hurricanes?

A tornado has an effective area of destruction about the size of a city block. A hurricane spans several hundred kilometers. However, there doesn't seem to be a continuum between the two. Why are ...
19
votes
1answer
3k views

Why do more tornadoes happen late in the day?

According to the graph below, which appears to be sourced from the US National Oceanic and Atmospheric Administration, more tornadoes happen late in the day - why is this?
16
votes
3answers
3k views

Why does the so called “tornado alley” exist?

75% of the world's tornadoes occur in the USA, and within the USA these tornadoes are most likely to occur in particular regions of the country, such as the well known "tornado alley". The diagram ...
15
votes
1answer
93k views

Does a green or yellow sky actually indicate a tornado?

It seems to be a fairly widely held belief that if the sky is green or yellow, a tornado may be developing/approaching. But is there any truth to it? Could the color of the sky actually be associated ...
14
votes
1answer
868 views

How does a 'fire tornado' form?

A 'Fire tornado' or 'Firenado' or 'Fire whirl' are a fearful feature of forest fires world wide. Having seen one up close, I can attest that they are both awesome and utterly terrifying, but I am ...
11
votes
1answer
639 views

What is the motivation of using the Enhanced Fujita Scale in place of the Fujita Scale?

In 2007, the US started using an Enhanced Fujita Scale in place of the Fujita Scale. From a "civilian's" perspective, the Fujita Scale seemed to measure wind whereas the Enhanced Fujita Scale measures ...
10
votes
2answers
188 views

Do warnings verify better nearer radars?

As radar beams travel away from radars, they increase in elevation and widen. Have any studies attempted to quantify the rate at which warning skill (such as in FAR and POD) deteriorates as a ...
6
votes
1answer
84 views

How many buildings in tornado prone-areas have storm shelters?

I did a quick search, but couldn't pull any statistics from it. On tornado risk days, many I interact with in Oklahoma become concerned or panicked that they don't have a shelter. I am guessing the ...
5
votes
1answer
287 views

How does the tornado chaser locate the spot?

In my opinion, tornado is hard to forecast in three different aspects: The size of tornado is about 100 ~ 1000 m which can't be represented well in weather model or detected by limited weather ...
4
votes
5answers
6k views

Are EF6 Tornadoes officially recognized

Are EF6 Tornadoes officially recognized on the fujita scale or not, I have been quite confused on this and I have been very curious about it.
4
votes
2answers
309 views

Is there any video evidence of animals raining from the sky?

I image most people have heard stories of fish, frogs, or other small animals raining from the sky. I found quite a few articles on line with many instances of such occurrences but they were mostly ...
3
votes
1answer
179 views

What is the synoptic/atmospheric setup that is causing the U.S. severe weather outbreak in May 2019?

I asked this in the chat and it was suggested I ask on the main site. There's been a seemingly perpetual severe weather outbreak over the central and eastern U.S. over the past two weeks. Killer EF3s ...
3
votes
2answers
353 views

If North America were in the southern hemisphere, would the mountains and high desert have to be -east- of Tornado Alley?

I've been trying to collate the reasons why Tornado Alley in North America is what it is. So far, I have the following: The continental landmass is in the mid-latitudes (where the polar jet has the ...
3
votes
0answers
46 views

Why aren't tornadoes embedded in squall lines or tornadoes in high-precipitation supercells destroyed by downdrafts?

I often hear that tornadoes die when the RFD (Rear Flank Downdraft) strengthens and destroys their source of inflow... How do tornadoes get any inflowing updrafts when they are embedded in rain? How ...
3
votes
0answers
555 views

What are the Theoretical Limits for Tornado Size and Strength

Is there a theoretical physical limit that we can calculate with regards to Tornado formation? At what size and strength is a hypothetical tornado physically impossible. The largest tornado in ...
2
votes
2answers
308 views

Do tornadoes usually avoid areas with many tall buildings?

In my mind, tornadoes usually appear in flat areas with some wooden houses, but not places like cities with many tall buildings. It is especially rare to see a tornado destroying a series of ...
2
votes
0answers
44 views

Visually Realistic Supercell Modeling

Are there any published descriptions of simple equations governing the formation, evolution, and decay of severe storms? Specifically, I am interested in equations that are able to produce tornadoes ...
1
vote
1answer
135 views

Tornadoes meeting with an Immovable, Unbreakable, Large Cube

What would happen to a tornado if a Large, Immovable, Unbreakable and Obsidian Cube was in its path? The tornado is on a flat plain... but is heading towards the cube. By large, I mean the length of ...
1
vote
2answers
286 views

Appearance of Tornado

Does the appearance of a tornado come from the dust or is there some characteristic of swirling wind? Additionally many experiments shows a tornado-like phenomena in a jar of water, is this possible ...
1
vote
1answer
95 views

Could a large burst of super-heated or super-cooled air cause tornadoes to fall apart?

We know how tornadoes form: when areas of hot air and cold air mingle, causing rotation. We can even see them form on the radar. Yet, for all of our technology, we can't stop such events from ...
1
vote
3answers
98 views

At the same speed, is a tornado as dangerous as straight wind?

If we have a place with wind at a given speed, and a tornado at the same speed, are they equally dangerous, or the tornado is more powerful?
1
vote
0answers
132 views

Why are larger tornadoes stronger?

I recently read an article that said that claimed the stronger the tornado, the larger its area and generally, I think this is accepted. Why? The vorticity equation $$\frac{D\vec{\omega}}{Dt}=\...
0
votes
1answer
57 views

Conditions of Thunderstorms

Why do some heavy rainstorms and hailstorms not produce any lightning or thunder at all when I thought that these conditions of heavy rain and hail are right to bring lightning and thunder but don’t ...
-1
votes
1answer
50 views

Tornados from dust devils

Maybe tornados form from dust devils that get pulled into the storm. Is there some way to look for a correlation between number of tornados on a given day and how conducive conditions are to producing ...