Original subtitles

Hard to imagine the power of mother nature even if you're in

Mother nature even if you're in a shelter, even if you're

A shelter, even if you're exactly where you're supposed

Exactly where you're supposed to be during a tornado for

To be during a tornado for those 123 minutes.

Those 123 minutes. >> when everything is falling

>> when everything is falling apart around, you it's chaos

Apart around, you it's chaos my god back out and you're

My god back out and you're just at the mercy of mother

Just at the mercy of mother nature get really. As a

Nature get really. As a terrifying experience to go

Terrifying experience to go through right back

Welcome to.

>> violent earth. >> I'm liev schreiber 2023 set

>> I'm liev schreiber 2023 set an all-time record weather and

An all-time record weather and climate related disasters in

Climate related disasters in the us. 28 events with losses

The us. 28 events with losses over $1 billion wildfires

Over $1 billion wildfires hurricanes, and floods are more

Hurricanes, and floods are more frequent than ever. The earth

Frequent than ever. The earth is changing tonight we delve

Is changing tonight we delve into one of the most powerful

Into one of the most powerful natural hazards in the world.

Natural hazards in the world. >> tornadoes terrifying

>> tornadoes terrifying vortexes on leave from

Vortexes on leave from thunderstorms in cause

Thunderstorms in cause unimaginable destruction few

Unimaginable destruction few examples of their power are

Examples of their power are more definitive than the 2011

More definitive than the 2011 twister that hit joplin,

Twister that hit joplin, missouri categorized as an ef5,

Missouri categorized as an ef5, the highest level possible

The highest level possible maximum winds over 200 miles

Maximum winds over 200 miles per hour the tornado cut right

Per hour the tornado cut right through the center of the city

Through the center of the city oh my god oh my gosh late may

Oh my god oh my gosh late may is the bullseye in the midwest

Is the bullseye in the midwest for tornadoes joplin was under

For tornadoes joplin was under a risk of a tornado, but not a

A risk of a tornado, but not a great risk that is a tornado.

Great risk that is a tornado. People there was a complex of

People there was a complex of storms that came toward the

Storms that came toward the city the tornado formed just

City the tornado formed just outside of the joplin city

Outside of the joplin city limits and then it just started

Limits and then it just started racing in the job one all the

Racing in the job one all the warms are going off on my

Warms are going off on my computer. Here it comes just

Computer. Here it comes just straight through the heart of

Straight through the heart of joplin, missouri.

Joplin, missouri. >> gosh, that is a monster

>> gosh, that is a monster tornado.

Tornado. >> I couldn't really see

>> I couldn't really see anything because it was

Anything because it was obscured by rain it was rain,

Obscured by rain it was rain, rain I think that's why

Rain I think that's why there's so many people died

There's so many people died they didn't not realize that

They didn't not realize that what they were seeing was the

What they were seeing was the tornado.

Tornado. >> in this case, an ef5 tornado

>> in this case, an ef5 tornado that is catastrophic and by the

That is catastrophic and by the time they did this to light as

Time they did this to light as a pointer went by, everything

A pointer went by, everything was gone. It was like a

Was gone. It was like a bulldozer and level everything

Bulldozer and level everything in his path I just couldn't

In his path I just couldn't believe what I was millions and

Believe what I was millions and millions of pieces of debris

Millions of pieces of debris the tornado was on the ground

The tornado was on the ground for 32 minutes. Designs are

For 32 minutes. Designs are going hips convenience store on

Going hips convenience store on east 20th street.

East 20th street. >> they had locked it just to

>> they had locked it just to the door when fling open.

The door when fling open. >> listen to the audio a

>> listen to the audio a tornado entered the center part

Tornado entered the center part of the city that they hit the

Of the city that they hit the high school that's what a mass

High school that's what a mass damage occurred valence video

Damage occurred valence video from my high school is no more

From my high school is no more than 100 yards from amber

Than 100 yards from amber monson's house in 2011, amber

Monson's house in 2011, amber was 40-years-old amber's always

Was 40-years-old amber's always been amber just always

Been amber just always generous, kind, and hospitable.

Generous, kind, and hospitable. Just fun to be around member

Just fun to be around member was home that afternoon. She

Was home that afternoon. She wasn't aware that the tornado

Wasn't aware that the tornado was coming she didn't have her

Was coming she didn't have her tv on and no indicators that if

Tv on and no indicators that if it was gonna be that severe I

It was gonna be that severe I had spoken to her. She said,

Had spoken to her. She said, oh, it's just turned really

Oh, it's just turned really dark here.

Dark here. >> and then she said, now the

>> and then she said, now the sirens are going off and

Sirens are going off and that's a nice say go take the

That's a nice say go take the quilt off the top your bed and

Quilt off the top your bed and getting your bathtub.

Getting your bathtub. >> I said and then call me back

>> I said and then call me back very few houses in joplin

Very few houses in joplin particularly in the path of

Particularly in the path of what turned out to be this

What turned out to be this tornado, had basements.

Tornado, had basements. >> so the best place go is

>> so the best place go is either a closet or in your

Either a closet or in your bathtub you want to get as low

Bathtub you want to get as low as you can put as many walls

As you can put as many walls between you and the tornado was

Between you and the tornado was possible. Oh, gosh, I was

Possible. Oh, gosh, I was concerned when she said the

Concerned when she said the sayyed runs. We're going off. I

Sayyed runs. We're going off. I wouldn't even imagine the

Wouldn't even imagine the magnitude of what was going to

Magnitude of what was going to come amber. Munson probably 15

Come amber. Munson probably 15 seconds before the tornado hit

Seconds before the tornado hit realized just how bad it was

Realized just how bad it was going to be and bang the

Going to be and bang the tornado here for tornadoes to

Tornado here for tornadoes to form, you have to have a

Form, you have to have a certain and set of ingredients

Certain and set of ingredients first of all, you have to have

First of all, you have to have moisture available for

Moisture available for thunderstorms to develop.

Thunderstorms to develop. >> you have to have a source of

>> you have to have a source of lift or a trigger for those

Lift or a trigger for those thunderstorms to get going you

Thunderstorms to get going you have to have unstable air,

Have to have unstable air, which is temperatures that get

Which is temperatures that get colder with height and that

Colder with height and that allows the thunderstorm to rise

Allows the thunderstorm to rise and development hello

And development hello vertically the most important

Vertically the most important ingredient is you have to have

Ingredient is you have to have wind shear, which is changing

Wind shear, which is changing of wind direction with height

Of wind direction with height and also changing wind speeds

And also changing wind speeds with height there's all sorts

With height there's all sorts of different shapes fernandez

Of different shapes fernandez can take we have a stove pipe

Can take we have a stove pipe or just kind of like a straight

Or just kind of like a straight up and down type tornado.

Up and down type tornado. >> we have obviously a cone

>> we have obviously a cone that makes sense if the shape

That makes sense if the shape another one is the wedge, and

Another one is the wedge, and that's usually the most

That's usually the most intense different tornadoes

Intense different tornadoes have different smells. When a

Have different smells. When a tornado is going through a

Tornado is going through a densely wooded area, you can

Densely wooded area, you can smell fresh cup would the fresh

Smell fresh cup would the fresh copy? Fine, whatever the tree

Copy? Fine, whatever the tree is the typical widths are

Is the typical widths are anywhere from probably 25, 50

Anywhere from probably 25, 50 yards across on the low end two

Yards across on the low end two on the high end mile wide the,

On the high end mile wide the, largest one I've ever seen was

Largest one I've ever seen was the el reno, oklahoma tornado.

The el reno, oklahoma tornado.

>> and that was over two miles wide the joplin tornado became

Wide the joplin tornado became a mile wide wedge right on the

A mile wide wedge right on the edge of town tornado was

Edge of town tornado was massive it was chewing up

Massive it was chewing up everything in its path groups,

Everything in its path groups, no mercy at all

: Breaking news here at cnn.

Joplin, missouri, suffering the devastation right now

Of a very powerful tornado.

Jim riek: Amber lived in what I would call a very

Middle class area of joplin.

Jeff piotrowski: This beautiful, quaint subdivision,

And now it's level.

Kat piotrowski: It was just total devastation.

Our phone rang, and it was her, and she was screaming,

Mother, my house is on top of me.

That's when I said, amber, that's not

Funny, because we would always kid back and forth.

And she said, no, mom, my house is on top of me.

And then her phone went dead.

So there's a lot of myths that have been

Passed down through the years.

Reporter: Doors and windows on the north and east sides

Were open.

Trent okerson: Whenever I was growing up,

I heard you've got to open up the windows

To equalize the air pressure.

Well, pressure is not what will cause damage to a home.

It's wind getting up under the roof, blowing the roof off.

Another big misconception is if you're out in a vehicle,

That an overpass is a great place to take shelter.

That is not a good place to go.

Scientists have realized that being in that overpass

Creates a bit of a wind tunnel effect,

That the wind is blowing through a smaller area

So it can actually accelerate the wind speeds.

So you're putting yourself in greater danger.

Kim klockow mcclain: There's a really popular misconception

That mobile homes are like tornado attractors,

And what's behind that is undoubtedly that people hear

About mobile homes getting hit more because that's

Where people die.

Harold brooks: Roughly half of the deaths

In tornadoes occur in mobile and manufactured homes.

They're much more vulnerable to a tornado

And tend to turn into debris quicker.

There are myths that tornadoes can't cross bodies of water.

Oh, tornadoes can't go through cities.

Jeff piotrowski: But there are no rules

When it comes to tornadoes.

They go where they wanna go.

Harold brooks: The deadliest tornado in us history

Is March 18, 1925, the tri-state tornado that

Went across southeastern missouri, southern illinois

Into southwestern indiana, and it

Killed 695 people over about a two and a half hour long period.

Generally, after the tri-state tornado, we see, like,

A 10-fold decrease in the fatality rate from

Tornadoes as compared to 1925.

We think there are a lot of things that

Could be going on behind that.

There was the emergence of radio and people downstream could

Hear about it immediately.

Radar has had something to do with this, increases

In our understanding of storms, and now the ability

To push warnings to people on their cell phones.

Harold brooks: But the may 22, 2011 tornado at joplin,

Missouri, was the deadliest tornado in decades

In the united states.

Being the seventh deadliest in us history.

Jim riek: On that day, it didn't matter

What type of forecasting skills you had, what technology.

The tornado won.

[dramatic music]

Jeff piotrowski: Everything basically

Was a three foot, four foot pile of debris

Everywhere as far as the eye could see.

Just debris everywhere.

There's really nothing standing.

Donna kerry: In her immediate neighborhood,

There were 16 people that perished.

Jim riek: Jeff piotrowski sees a lady who is hysterical,

Has no idea what has happened to her.

And that's amber munson.

You could hear amber before you saw her,

And that's what I remember more than anything

Is hearing her cries out.

Amber munson: Can I use your phone?

Jeff piotrowski: What?

Kat piotrowski: And coming towards us.

Jeff piotrowski: Yeah, all the phones are jammed.

Kat piotrowski: Jeff jumped out of the car

Immediately and raced towards her.

I'm ok.

I'm ok. Jeff piotrowski: Come here.

Come here. Hello?

Hello?

How did she survive?

Amber munson: Once the tornado sirens went off

And the lights started flickering,

I grabbed a pillow and a blanket and my phone

And I jumped into the bathtub.

I decided to roll over on my right side

And I kind of got into a fetal position and covered myself up.

But as the pressure started coming,

The bath started bouncing.

So it was very minor at first, not realizing that you're gonna

Get sucked out of your house.

After the tornado hit, I remember

Hearing the glass shatter, but I don't

Remember flying in the tornado.

Amber munson went flying, ended up in someone else's yard.

Amber munson: When I woke up, I just remember being upside down,

Buried within the rubble.

I knew I was alive, but I still questioned whether or not

I was gonna survive because of the stuff

That was falling on me.

I think just wanting to survive kicked in for her.

I kind of wiggled myself out so that I could get up,

And that's when I got out of the hole.

I had twisted my knee and I had a puncture wound in my back.

But she's alive.

It was a miracle.

Amber munson: The joplin tornado,

Having lived through it, made me realize that people

Don't take them serious enough.

You see people that go stand on the front porch wanting

To capture these things, not realizing

How risky they really can be.

Storm chaser: Oh, we got lightning.

Trent okerson: Storm chasing has gotten

Extremely popular over the past couple of decades.

Storm chaser: Get the best footage.

Harold brooks: People do it, in large part, for the thrill

And for the excitement of seeing the event.

Storm chaser: Tornado number one.

Tornado number two.

The original tornado is still on the ground.

Tim marshall: Once you get out there

And you see a storm in the open plains and the amazing structure

That it has, it's mesmerizing, and it

Can become even addicting.

Storm chaser: My goodness.

That is a thing of beauty and violence.

Max olson: There's a side to it that's almost like a hunter,

Because you're trying to narrow down where in the country

This relatively rare phenomenon is gonna take place.

Storm chaser: Come on.

Tim marshall: Now there are thousands of people who do this.

There's even tour groups nowadays,

And you can get in a van and go with a group

Of fellow enthusiasts and drive out onto the plains

And see the majestic skies.

Allison chinchar: In the united states, we average more

Than 1,200 tornadoes per year.

That is number one in the world by a long shot.

The second closest is canada, which only gets 100 per year.

You could actually add canada, australia,

And all european countries combined,

And we still see more than they do.

Tornadoes are most common in the midwest.

Max olson: We also have another area

That's really prone to tornadoes in our southeastern states.

Harold brooks: The tornado season depends on where

You are in the country.

In the plains, tornado season is typically

Over a relatively short period of time in the springtime.

In the southeastern united states,

Tornadoes are more likely to occur at any time of the year.

Tornadoes actually can and do strike all over the country.

Tim marshall: Tornadoes have been known

To be in every state of the us.

They have been in the highest of mountains,

Beaches, and offshore.

Harold brooks: Over the last 50 years,

What we've seen has been an increase

In the number of tornadoes in what

We think of as the mid-south.

It looks like it's associated with physical changes

In the atmosphere, but we don't have a real underlying

Reason of why that's occurred.

Reporter: A rare sight in the skies over japan.

A powerful twister ripping across the eastern part

Of the nation.

Tornadoes occur worldwide.

Jeff piotrowski: Europe has tornadoes.

South america has tornadoes.

Australia, japan.

Trent okerson: But the united states has a unique combination

Of geographical features that can lend

Itself to a lot of tornadoes.

The gulf of mexico, that provides

The very warm, humid air.

Then you also get cooler, drier air that's either coming down

From canada or off the rockies.

There's really no other place in the world that

Has the exact combination of ingredients like we

Do here in the united states.

Storm chaser: Zoom in.

Storm chasing has definitely evolved into this kind

Of social media era.

Storm chaser: Where are we?

Northeast nebraska?

Max olson: And people wanna be seen.

They wanna be, you know, the chaser that everybody thinks of,

Doing the live streams, posts in front of a tornado and whatnot.

Trent okerson: Storm chasing is a double edged sword.

It's very valuable when it comes to learning more

About the science behind storms, but it

Can also be dangerous if you're not

100% sure of what you're doing.

The biggest danger of storm chasing

Has always been the driving.

Storm chaser: Let's go back.

We're going back.

We're going back.

You tend to judge where the tornado is going,

But that doesn't always happen.

There are so many people who chase

Now on some storms that traffic is actually a serious problem.

When I'm chasing out in the plains,

I'm apt to see dozens of other chasers.

When I began storm chasing, there were no other chasers.

Tim marshall: David hoadley, whether he likes it or not,

Is the father of modern day storm chasing.

Max olson: David hoadley is the first person

To truly go out and seek tornadoes, driving

Long distances, attempting to come up with some sort

Of formula to see tornadoes.

He holds the record for the longest consecutive years

Of storm chasing.

I've been storm chasing 66 years,

And I've seen 265 tornadoes.

I saw my first tornado in 1958.

I think this is one of the things

That appealed to me was the element of, really, mystery.

What causes these storms?

There was so much that was unknown.

2023, I saw david hoadley out chasing.

The man's 85 years old.

He's been doing it for most of his life,

And he's still out there doing it every single year.

David hoadley: It's not like spelunking or surfboarding.

You can return to the ocean.

You can climb the mountains again and again and again.

But that one tornado, that one storm, once it's gone, it's out.

It's history.

To have a picture of it, have a video or anything else of it,

Is to say that I've captured something

That will never happen again.

Tornadoes are most common 4:00 to 8:00 pm.

Because that's when the atmosphere is warmest,

You get the sunshine, heats things up,

Creates the most instability.

That instability is fuel for thunderstorms.

Mason lillard: May 22, normal Sunday.

We went fishing for a little bit and we

Were getting ready to take my cousin lage home.

I was 10 and lage was 14, and my grandpa was like, hey,

I need some wiring for my garage at home depot.

I would say probably around 5:00,

5:15-ish, the sky's starting to get

A little kind of weird looking.

My grandpa went inside of home depot and my cousin, my grandma,

And myself were all sitting in the truck.

We heard the sirens go off, but we

Just ignored them like normal.

And then all of a sudden it went from kind of dark

To, like, midnight black, almost.

We were trying to open up the doors of the truck

And the winds were just going too fast.

And then my cousin, he was like, whoa, the truck's tearing up.

And then at that moment, the truck flipped on its side

And got sucked into the vortex.

We could kind of hear everything, like the hail

Hitting the truck and stuff.

It felt terrifying to be in that tornado.

You see, like, the wizard of oz, and it's almost like that.

But in real life, it's loud and you don't know what's going on.

Lage was sucked out of the truck.

I felt like I was slipping out of the truck.

I was holding on to my grandma's hand,

And then I felt the truck land, like, the tires bounce.

And I was like, ok.

I'm alive, at least.

All I felt was, like, my ribs were broken.

I realized that something was actually in me.

Most people are killed in tornadoes by flying debris.

Storm chaser: That's the most violent motion.

Kim klockow mcclain: Tornadoes consist of anything the tornado

Brings into the air.

So often a lot of dust and dirt and plants, branches.

And then if it's a more violent tornado,

That can include debris like planks of wood, shards of glass.

Mason lillard: I hear my grandma.

Lage, lage.

And I was like, mama, I hear him.

He was outside of the truck.

It wasn't like a, I'm here, or I'm ok.

It was moaning.

Storm chaser: Oh, no.

There are the lines.

Oh my god.

Oh my god.

Look at that.

Harold brooks: One of the things about a tornado

Is that it's producing a lot of small pieces of debris

That are flying at, you know, 150 miles an hour.

And even ordinary objects, dinner plates, two by fours,

Become really, really deadly at those kinds of high speeds.

Jim riek: I knew after joplin how

Destructive a tornado could be.

It was moving so slowly that it was like a blender.

Everything on the ground was getting totally mixed together.

And it just hits you again and again and again and again.

I saw a piece of cardboard that actually

Penetrated into the exterior insulation

Finish system on a school.

At the hospital, they had $1 million helicopter.

All of the rotors are gone.

If a rotor of a helicopter is flying by at 100 miles an hour,

What is that going to do to a human body?

Paul markowski: How far the debris goes

Is going to depend on essentially how heavy it is.

The heavier stuff gets centrifuged out, so big chunks

Of structures or automobiles.

Lighter debris, though, like a piece of paper,

That won't get centrifuged out.

That'll instead go up through the funnel,

Can end up reaching altitudes of 40, 50,000 feet,

And there certainly testimonials out there,

People finding pieces of paper or photographs

50 to 100 miles from their origin in the wake of a tornado.

Mason lillard: We thought it was only, like, 20

Minutes before help arrived.

It ended up almost being two hours.

Jim riek: When the paramedics came,

They spotted lage first because he's outside.

They carried lage out on a two by four,

And they brought him to the ambulance,

And the paramedic jumped out and said he's not gonna make it.

The other ones were trying to cut me out.

I had a one inch piece of angle iron

Go through my right shoulder, break seven ribs,

Puncture my lower lung, and come out my back.

A fourth inch away from my spine and a fourth inch

Away from my liver.

They ended up having to use an electric saw.

It felt like 5,000 bees stinging me at one time.

And I had arrived sitting on the stretcher, sitting up.

Once they took my cousin to the hospital, they black tagged him

And put him in the morgue.

Left him for death.

A nurse came in and she touched his arm

And he let out a horrifying scream,

And she grabbed a doctor, said, I think we can save him.

Two hours later, he was in the or.

After the tornado, I had 13 surgeries in total

Over the course of three years.

Lage was on the ventilator for at least two weeks.

He has a brace on his leg and he can't really use his right arm.

But he did survive.

The may 22, 2011 tornado killed 158 people directly,

And there were three indirect deaths.

We did not know that we could experience tornadoes this deadly

In modern times.

Harold brooks: Nighttime tornadoes

Are more dangerous than the same tornado in the daytime,

For a lot of reasons.

We ascribe this to the fact that people

Are just less aware at night.

[ominous music]

I was chasing that day.

What was that?

Oh, I think I see it.

I start to see the shape of the tornado come into view.

I know this is a significant tornado.

Oh, wow.

That is huge.

Holy [bleep] ok.

Ok.

Ok.

We got it.

And then I just see the tornado, an absolute beast

Marching off to the northeast.

Ah, man, it's moving towards populated area now.

It was headed from one small community

To another small community, and we

Knew, based on where this was going, if you draw a line,

It's coming right to mayfield.

The mayfield event was moving at the upper end of tornado

Speeds, 60, 65 miles an hour.

This was something that is very high end.

Harold brooks: Speed certainly can play an impact

On how dangerous a tornado is.

A faster tornado is gonna give you less time to react.

The speed at which the tornado is going to move along

Is going to roughly match the speed that the parent

Thunderstorm's moving along.

In some cases, we've seen storms move as fast as 60, 70,

80 miles per hour because they're

Embedded in very strong winds.

Allison chinchar: There is one example of a man

In illinois back in 2013.

He's filming a tornado that is off in the distance,

But he quickly realizes it's actually headed

Right towards him and his home.

Man: All right.

I got to go.

I'm coming, honey.

Woman: [screams]

Man: Aw, man.

Woman: Oh my god!

Allison chinchar: About 45 seconds later, he

Gets the look at the scope of the damage

That's been done to his house.

Man: Oh my god.

Our house is freaking destroyed.

Kim klockow mcclain: The survivors

I've spoken with, they just experience what feels

Like a building dissolving.

One minute I was in a building and the next

Minute I just wasn't.

Like a bomb has hit it.

It's obliterated.

[ominous music]

Derek vaughan: So at its maximum intensity,

The peak winds were up to 190 miles per hour.

That's enough to just destroy anything in its path.

Nothing can stand up to that.

You knew people were gonna lose their lives that night.

Once the tornado approached mayfield,

It came in from the southwest side of town.

Derek vaughan: I had a few officers on shift

With me that night.

We had decided that we were gonna go ahead and meet

At the police department.

The services all started going down suddenly.

The power in the entire town went off.

And of course, when that happened,

We knew that it was probably about to hit.

I remember officer simpson went to the front window

And he just yelled, there's debris coming in.

And as I watched him turn and run towards us,

The whole front of the building just exploded inward on us.

You almost couldn't even tell which way it was up,

There was much wind and debris.

It was almost like being underwater.

Trent okerson: Mayfield water and electric,

Their facility was just on the edge of the worst damage path.

Even there, you saw the massive amounts of debris

That was blowing, pieces of wood flying through the air

Like missiles, and they weren't even directly

In the core of that tornado.

One of the buildings that was close to the police department

That got hit real hard was the f&b bank

Right there on the court square.

And all of a sudden, boom.

The tornado hits.

It's that fast.

Trent okerson: The candle factory is

A major employer in mayfield.

This was right before christmas, and a lot of people that

Were working extra hours trying to do overtime,

And their facility was packed that Friday night.

Autumn kirks: I was working at mcp, the candle factory,

That night.

Me and joe did work together at the factory.

Usually they try not to put couples together,

But for some reason, we've always made it work.

He was so goofy.

He'd do anything to put a smile on anybody's face.

Kim klockow mcclain: The night of the storm, the couple

Were sheltering together when the tornado

Hit the candle factory.

I didn't hear a single thing at all.

All I heard was people talking.

And then all of a sudden someone said, take cover.

Brad copeland: The best way I can describe

It would be a war zone.

I remember thinking the amount of force that could have caused

That, you know, how could anybody

Survive what I was looking at.

Autumn kirks: Joe and I were 10 feet from each other

When it first hit.

Trent okerson: Kyanna parsons was an employee there

At the candle factory, and kyanna

Goes on facebook live that night to try

To get help from the outside.

Storm chaser: There's two of them.

In 2011, we saw one of those generational tornado

Outbreaks that doesn't happen in our country

But every couple decades.

Storm chaser: Oh, dude, that looks wild.

Storm chaser: Oh, it's right there.

That's that tornado right there.

Storm chaser: [bleep]

Harold brooks: April 27, there end up

Being a number of storms that produce

Tornadoes from central mississippi

Eastward through alabama.

And many of those storms produced multiple tornadoes.

Just in the state of alabama there were

62 tornadoes that hit that day.

Seems that every hour that passes today, the news out

Of the south just gets worse.

Kim klockow mcclain: After the alabama outbreak,

There was kind of a renaissance in our field

Because we hadn't experienced an event

That deeply catastrophic in so long.

There were hundreds of fatalities,

And we hadn't lost that many people in a tornado outbreak

Since 1974.

Storm chaser: Oh my god.

Harold brooks: One of the silver linings of the April 27 outbreak

Was an understanding that we need

To do a whole lot more work on social science with respect

To forecasting.

I describe myself as a tornado epidemiologist.

It's really someone who tries to understand

The circumstances that lead someone to be

Injured or die from something.

What are the factors that explain fatalities,

And what kinds of interventions can we

Design, whether in our communication system

Or structurally in our communities,

To help mitigate that threat?

Among the things studied was the amount of time given to warn

The public about tornadoes.

A tornado warning is issued when a storm is

Either actively producing a tornado

Or it looks really likely to.

And we're starting to explore what is the right amount

Of lead time to give people.

What they figured out was there is such

A thing as too much lead time.

If you give people too much time, say,

It's going to be 20 minutes before the tornado arrives,

Many people will look out their window

And see that it's still blue skies.

The storm hasn't gotten there yet,

And either they think they have more time

Than they do or they think the storm

Isn't really going to hit them.

So there is such a thing as too much lead time.

Also what they're studying is how people react to the warning

They're given.

Kim klockow mcclain: Fear is a really challenging component

Of this entire equation.

There has been no example I've seen

That is clearer of this fear effect

Than what happened in oklahoma in 2013.

On may 20, we had the tornado that went through oklahoma city

And moore and killed 24 people, including

Several children at a school.

And after that, we had just days and days of storms

And everyone was just on edge.

And when may 31, 2013, a two mile wide tornado

Hit el reno just west of oklahoma city,

We saw spontaneous mass evacuation

Ahead of that tornado.

Highways were clogged for over 30 miles.

They found out because of fear,

People actually did the opposite of what they're supposed to do.

They fled their homes.

They fled their businesses, places that

Normally would have been safe.

When that happens in mass, that becomes very dangerous.

You end up getting stuck in traffic as a tornado hits.

Reporter: And we're still waiting to hear word

On what happened to the 110 people who were

Inside this candle factory.

Derek vaughan: Once we were able to get down there and assist,

I saw that this whole building was just gone.

So one of the things that you'll

Notice if you see kyanna's facebook video

Was how resilient she was and her efforts to stay positive.

Kyanna parsons: I was under the rubble approximately

About three hours.

I see one of the rescue people, and I'm crying.

I'm like, please don't leave me.

He says, no, no, no, we're not gonna leave you.

A trooper that was at the top grabbed my arm and he pulled.

And so got out, and every step I made,

There was someone grabbing my hand, someone grabbing my hand,

And just there for me.

Autumn kirks: It felt like a wall

On top of me and the three girls next to me.

And I don't know who it was, but somebody came and lifted it up

And got us all out.

The minute I actually got out, I fell to my knees

And just broke because I had no idea where joe was.

I wanted to go back and look for him.

I was told I was not allowed.

It hit Friday night, and at 9:30 Monday

Morning his mom called me.

She's like, autumn, they found him.

I'm like-- and I had hope for all of two seconds.

She's like, autumn, he didn't make it.

I wish I could go back to not knowing

Because there was hope that, hey, they might still find him.

I just-- I pray that nobody else has to go through this.

Trent okerson: We have so much technology,

We have the ability to control so much in our lives these days.

You still can't control mother nature.

You can't control a tornado.

You can't control what it does.

And no matter how prepared you may be,

You're still at the mercy of what these storms decide to do.

Autumn kirks: I have a very healthy

Respect for mother nature and tornadoes and what they can do.

It can ruin your entire life.

It can destroy everything you know.

In 2011, after the joplin tornado,

Amber munson had lost her house, most of her possessions,

And all of her treasured photographs.

But months later, a miracle.

There was a craigslist post from a stranger over 50 miles away

Who had found a photograph in their yard.

It was a picture sucked up by the tornado.

A baby photo of amber.

The only one to survive.

The woman mailed it back to amber along with $5,

All she could afford, but wanted to give to help

Amber start her life over.

For more information on what you can do in a tornado and what you

Can do to help combat the growing climate crisis,

Go to cnn.Com/violentearth.

I'm liev schreiber.

Thanks for watching.

Good night.