Weather Phenomena

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Weather Phenomena

• SOL WG.2a

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Monsoons

• Monsoons are wind patterns in South and Southeast
  Asia.
• There are two types of monsoons in South Asia,
  the winter monsoon and the summer monsoon.

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Monsoons

• Summer Monsoon - The wind blows from the
  southwest, bringing moist ocean air that causes
  rain.
• Winter Monsoon - The wind blows from the
  northeast, bringing dry air.

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Monsoons

• The summer monsoon brings heavy rainfall to South
  and Southeast Asia and can cause severe flooding.
  However, the rain is also beneficial because
  people need the water for irrigation.

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Tropical Storms

• Tropical storms are storms that form over water
  and are characterized by strong winds and
  thunderstorms that rotate around an eye.
• Tropical storms have different names around the
  world.

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Tropical Storms

• Tropical storms form in the low latitudes between
  the Tropic of Cancer and Capricorn. This area is
  also known as the tropics.
• Tropical storms that form in the Atlantic Ocean
  and Caribbean Sea are called hurricanes.
• Tropical storms that form in the Pacific near
  Asia or the Indian Ocean are called tyhpoons.

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Tropical Storms

• Tropical storms form over water and are fueled by
  heat that is released when moist air rises. When
  tropical storms move over land they generally
  lose power.
• The hurricane season in the Atlantic Ocean is
  between June and November.
• The typhoon season in the Southwest Pacific is
  from October to May.

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Tropical Storms

• Hurricanes can affect people in several different
  ways
• They cause storm surges (a large wave that can
  flood areas low in elevation).
• They destroy houses with violent winds.
• They cause flooding from severe rain.

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Tropical Storms

• Why do fewer people die from tropical storms in
  developed countries?

• Developed countries have better infrastructures.
  Houses and buildings must be built according to
  building codes.

• Developed countries have better warning systems
• so people can prepare for storms.

• Developed countries have systems in place to
• help people after the storm is over.

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Tropical Storms

• Other things people can do to prepare for
  tropical storms.
• Build dams or dykes to stop storm surges.
• Build shelters to protect people from storm
  surges or high winds.
• Designate evacuation routes.

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Tropical Storms

• Some countries that have many tropical storms
• Cuba, U.S., Haiti, Dominican Republic, Puerto
  Rico, Jamaica, India, Bangladesh, Myanmar,
  Thailand, Vietnam

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Tornadoes

• A tornado is a twisting, funnel shaped storm.
  Tornadoes can occur on every continent but they
  are most commonly found in North America.

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Tornadoes

• Tornado Alley is a term created by the media to
  refer to an area in middle America that gets many
  tornadoes. A few states in this area are Texas,
  Kansas, Nebraska, and Oklahoma.

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Tornadoes

• The Fujita scale rates the intensity of a tornado
  on a scale from 0 to 5. An F0 will cause light
  damage and an F5 will completely destroy
  buildings and even skyscrapers.

http//www.youtube.com/watch?v32L5OtnIPGk
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Droughts

• A drought is a prolonged period of time with no
  precipitation. Droughts are common in arid
  regions and can cause severe hardship.
• Droughts in Africa have caused thousands of
  people to migrate in search of food and water.

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