Weather Disturbances

Weather Disturbances

And Their Effects on the Environment

Open Ended

In 2005, Serbia, people reported frogs falling from the sky while it rained. How do you think this happened?

It occurs when energy moves through the atmosphere, and turns into storms, low-pressure areas, or prevailing winds.

They may be called natural disasters.

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​Weather Disturbance

It refers to the changing conditions of the atmosphere at a particular time.

It includes temperature, air pressure, wind, humidity, precipitation, and cloudiness.

Weather disturbances produce extreme weather conditions.

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Weather

Multiple Choice

Which component is NOT included in determining the weather?

• temperature

• wind

• salinity

• humidity

Types of Weather Disturbances

The most frequently occurring weather disturbances in the world are thunderstorms, tornadoes, and tropical cyclones.

It is formed when warm air rises up to the cooler regions of the atmosphere.

It is accompanied by lightning, thunder, and heavy rains.

They mostly occur in the afternoon or evenings.

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Thunderstorms

Multiple Choice

Why are thunderstorms more likely to form after warm weather?

• Clouds always form outside of hot places.

• Heat makes more water evaporate into thunderclouds.

• The cool air from the sea moves to the land when it is hot.

It is also called "twister .

It is a vertical funnel of rotating air.

They develop in cumulonimbus clouds and make contact with the ground.

The strength of a tornado is rated through the Fujita Scale.

The Fujita scale shows how much damage a tornado can do.

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Tornado

Multiple Choice

From which kind of cloud do twisters form?

• cumulonimbus clouds

• cirrus clouds

• nimbus clouds

It is the generic term for an intense circulating weather system over oceans or seas.

Their winds circulate in opposite directions depending on which hemisphere they form in.

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Tropical Cyclone

Every year, around 100 tropical cyclones form in the world.

Almost 70% of tropical storms become typhoons and hurricanes.

Many cyclones form in the Pacific Ocean.

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Tropical Cyclone

When ocean water becomes warm, it evaporates into the air.

This is a low pressure area.

The warm air keeps rising and condenses into clouds.

Air pressure makes the winds move in a circular motion.

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Tropical Cyclone

Multiple Choice

What is the specific classification for circulating weather systems which form around the Philippines, Japan, and China?

• cyclone

• hurricane

• typhoon

Meteorologists can predict the occurence of tropical cyclones unlike other natural disturbances.

High clouds, dry and cold air, high humidity, strong winds, and scattered rain are signs of a coming storm.

Weather Prediction

Effects of Weather Disturbances

Storms help to regulate temperature, brings freshwater, and removes pollutants. However, storms also have adverse effects.

Damage to Life and Property

• death through drowning or being crushed by debris

• spread of infectious diseases

• damage to structures

• animal deaths and habitat destruction

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Adverse Effects

Destruction of Crops

• destroyed crops result in loss of income and food shortage

• plants are uprooted and die

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Adverse Effects

Flashfloods and Landslides

• flashfloods appear without warning; families need to evacuate before the storm

• landslides destroy properties and delay recovery

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Adverse Effects

Class Suspensions

• Lost school days add burden to teachers and students.

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Adverse Effects