Download - Natural Disasters: Tornadoes

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Page 1: Natural Disasters: Tornadoes
Page 2: Natural Disasters: Tornadoes

What is a tornado?

How do tornados form?

Characteristics of a tornado

Most common characteristics to

identify a tornado

Safety rules

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Page 3: Natural Disasters: Tornadoes

A tornado is a violently

rotating column of air that is

in contact with both the

surface of the earth and

a cumulonimbus cloud or, in

rare cases, the base of a

cumulus cloud.

Various types of tornadoes

include the land

spout, multiple vortex tornado,

and waterspout. Waterspouts

are characterized by a spiraling

funnel-shaped wind current,

connecting to a large cumulus

or cumulonimbus cloud.

Texas Storm Claims

Elie, Manitoba 2007

Page 4: Natural Disasters: Tornadoes

Most tornadoes form from

thunderstorms. You need

warm, moist air and cool,

dry. When these two air

masses meet, they create

instability in the

atmosphere.

A change in wind

direction and an increase

in wind speed with

increasing height creates

an invisible, horizontal

spinning effect in the

lower atmosphere.

Page 5: Natural Disasters: Tornadoes

The cloud is white or

light gray while the funnel

remains suspended from

the cumulonimbus cloud.

When it makes contact

with the ground is a dark

gray or black color due to

the dust and debris that

are sucked from the

ground by the violent

vortex. They usually

rotate counter clockwise

in the northern

hemisphere

Tornado with a rainbow

Tornado in Canada

Page 6: Natural Disasters: Tornadoes

The tornado formed in

connection with a thundercloud,

called "Cumulonimbus".

Tornado appears at the base of

the cloud "Cumulonimbus" and

extends down to reach the soil

funnel.

A tornado is commonly

accompanied by rain, lightning,

hail, lightning and clouds of

darkness.

A common characteristic is

the low atmospheric pressure

(force per unit area exerted

on a particular surface) in the

center of the storm and

enormous wind speed.

Tornadoes move

approximately 50 Km/h,

however, some move slowly,

while others reach speeds of

100 Km/h or more.

Strong tornado in USA

Tornado in Mexico

Page 7: Natural Disasters: Tornadoes

You will shelter in basements or

in buildings with steel or

concrete.

You are going to keep open

some windows of the House,

preferably on the opposite side

from where the wind blows, but

stay away from them.

If you are inside a building, it is

suitable you will lie on the floor

lower.

You are going to stay away from

the windows.

City of Richmond, Texas

East Texas

In the case of not having

basements, you are

going to seek protection

under heavy and solid

furniture in the central

part and ground floor,

of not having these

media covered with a

mattress.

You won’t remain in a

car, leave it