Name: 竜巻を生き延びる方法と竜巻を認識する方法 (How to Survive a Tornado And Recognize It)
Uploaded: 2021-01-14T09:38:46.000Z
Duration: 10 min 2 s
Description: VoiceTubeの動画で発音を聞きながら英語表現を覚えよう！学べる英語：

The furious winds of a hurricane, impenetrable blizzards, or the stifling heat of a drought

– these are horrible manifestations of nature’s wrath – also known as Bad Weather!

But not many of them can compare to the fastest winds in the world.

Whirling up high, turning fields into wastelands, tearing trees out from the ground, and ruining

Still, survivalists say that anyone can prepare for a twister!

So let’s find out how to survive a tornado!

The first and most important thing any experienced weatherman, survivalist or tornado chaser

will tell you is you need to know what you’re dealing with.

Without a clear understanding of what exactly a tornado is, every other tip or piece of

advice has a good chance to fall flat and do no good after all.

A tornado can emerge even when there’s no storm or rain.

It comes without knocking; and its formation is sudden and quick.

It might take only a few minutes before a tornado starts to wreak havoc upon everything

Most of the time they appear in the summer when the ground is heated and the upper parts

of the atmosphere are influenced by cold winds brought on by thunderstorm supercells.

The hot air tends to produce updrafts – an ascending stream of warm air.

At the same time, thunderstorms bring rain and a descending stream of cold air called

As you can imagine, these two rapid airstreams colliding with each other isn’t a great

Warm air can’t flow higher up and cold air can’t go lower.

The force of their collision creates a spinning wall cloud right below the level of the parenting

With time, both the updraft and the downdraft become stronger and stronger.

It eventually produces a vertical column of spinning air that starts to suck debris from

This is when the funnel of a tornado appears from the spinning wall cloud.

It makes its way down from the cloud to the ground as if the storm itself tries to suck

And it won’t shy away from taking everything for a ride.

Just try to imagine: a tornado can be up to 2 miles in diameter.

The wind speed sometimes surpasses 300 mph, and the speed of the funnel itself traversing

the land is somewhere between 25 to 40 mph; but in some cases, it can reach 70 mph.

You wouldn’t want to race with something like that, and it’s certainly not a welcome

But what can you do to avoid meeting a twister?

The main way to assure your safety is to be aware of your surroundings, and plan in case

Most tornadoes happen in a warmer time of year, and their favorite place on Earth must

In fact, there’s even a term: ‘Tornado Alley’, which includes most of the Southeastern

But don’t think that you’re safe outside of these regions!

Believe it or not, tornadoes have appeared in the middle of winter, and in the least

Meteorologists are still working hard on gaining more knowledge about tornadoes and the origins

Considering a warning is your best chance at survival, it’s a good thing they figured

out how to predict them for the most part.

And more than that, you too could become a tornado spotter.

These are specially trained people that can detect the very first signs of a storm that

There are more than 230,000 of these vigilant storm-watchers across the US.

Their main task is to see if the storm is a supercell producing a wall cloud.

They’re not really hard to see: it looks like a giant bulge in the cloud base that

starts to spin as an updraft from the ground strikes it.

The moment they see a wall cloud starting to split into bands called ‘beaver tales’,

they know that they’re looking at the birth of a tornado.

This is where technology comes into play.

Meteorologists use weather radar, which is based on the Pulse-Doppler method.

Pulse-Doppler radars can detect raindrops and effectively calculate the distance to

Based on that information, meteorologists can form a full picture of changes in the

The same radars can detect rotation in storm clouds from more than 160 miles away.

When observers confirm the first signs of upcoming tornadoes, the emergency warning

You would need to sit in a bunker to miss this one, because it’ll be literally everywhere.

Speaking of bunkers, you would probably be glad to have one nearby, or at your own disposal,

if you’re about to weather something like an F-3 category tornado.

And there are 6 of these categories, so you can imagine what you’re up against with

If you still can’t, here’s a quick rundown for you.

An F-0 tornado is more like a landspout – it won’t cause any significant damage.

To be safe you would need to just trim the tree branches closest to your windows so they

An F-1 tornado, with wind speeds up to 110 mph, is more of a concern.

Hope you don’t live in a mobile home; and if you do – find another place to hide.

Tornadoes this strong can easily push a mobile home off its foundation.

An F-2 tornado can tear small trees out from the ground.

Any mobile home would be destroyed by it.

Even the roofs of well-constructed houses will partially crumble under the furious wind,

An F-3 tornado is where the real trouble begins.

All the upper parts of houses are in danger, and any debris caught by the wind become lethal

These tornadoes can lift cars and break brick walls.

F-4 and F-5 tornadoes are the rarest, but also the most dangerous.

If you ever hear that something like that is coming your way – it’s best to find

a bunker, safe room, or an underground shelter nearby.

These monstrosities can make buildings literally come off the ground, and cars fly in the air

Fortunately, there are a lot of shelters that are specifically built to protect anyone from

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竜巻を生き延びる方法と竜巻を認識する方法 (How to Survive a Tornado And Recognize It)

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