Presentation is loading. Please wait.

Presentation is loading. Please wait.

Weather and Climate Unit Investigative Science. * Normally peaceful, tropical oceans are capable of producing one of Earth’s most violent weather systems—tropical.

Published byGeorgina Manning Modified over 8 years ago

Similar presentations

Presentation on theme: "Weather and Climate Unit Investigative Science. * Normally peaceful, tropical oceans are capable of producing one of Earth’s most violent weather systems—tropical."— Presentation transcript:

1 Weather and Climate Unit Investigative Science

2 * Normally peaceful, tropical oceans are capable of producing one of Earth’s most violent weather systems—tropical storms and Hurricanes!

3 * During summer and fall, the tropics experience conditions ideal for the formation of large, rotating, low-pressure tropical storms. * In different parts of the world, the largest of these storms are called hurricanes, typhoons, and cyclones.

4 * Favorable conditions for cyclone formation exist in all tropical oceans except the South Atlantic and the Pacific Ocean off the west coast of South America. The water in those two areas are cooler and have nearly permanently stable air. Click here for video: What are hurricanes, typhoons and cyclones? https://www.youtube.com/watch?v=SSx_gisp24w https://www.youtube.com/watch?v=SSx_gisp24w

5

6 This map shows where every hurricane (or cyclone) has tracked from 1851-2007 across the Earth’s oceans. Click here for video: how hurricanes form https://www.youtube.com/watch?v=ajwUb2yNsvkhttps://www.youtube.com/watch?v=ajwUb2yNsvk

7 * Two conditions are needed to form a cyclone (or hurricane): * 1) An abundant supply of warm ocean water * 2) Some sort of mechanism to lift warm air and keep it rising * Cyclones thrive on the tremendous energy in warm, tropical oceans.

8 * Latent (stored) heat is stored in water vapor. This latent heat is later released when the air rises and the water vapor condenses. * This heat fuels the formation of larger and larger tropical storms and hurricanes.

9 * The air usually rises because of some sort of existing weather disturbance moving across the tropics. * Many of these disturbances originate along the equator. * Only a small percentage of tropical disturbances develop into cyclones.

10 Warm, humid air rises from the surface of the ocean, then cools at high altitudes an falls back to the surface. In the center of the storm, the rising column of air leaves a low pressure area (L) that is the eye of the storm.

11 * The first indication of a building tropical storm is a moving tropical disturbance. * A tropical disturbance is a large thunderstorm with sustained winds of 37-62 km/hour. * The Coriolis Effect causes the moving air to turn and spiral.

12 * A tropical storm forms as winds increase to speeds of 63-117 km/hour, strong thunderstorms develop and become well defined. Click here for Hurricane Animation: http://pbs.panda- prod.cdn.s3.amazonaws.com/media/assets/wgbh/ess05/ess05_int_hurrlife/index.htmlhttp://pbs.panda- prod.cdn.s3.amazonaws.com/media/assets/wgbh/ess05/ess05_int_hurrlife/index.html

13 * With sustained winds of 118 km/hour, an intense tropical weather system with well- defined circulation is now a cyclone (hurricane). Click here for video: Hurricanes 101http://video.nationalgeographic.com/video/101- videos/hurricanes-101http://video.nationalgeographic.com/video/101- videos/hurricanes-101

14 * The storm develops around a calm center, called the eye. * The eye of the cyclone is a span of 30 to 60 km of calm weather and blue sky. * The strongest winds of the cyclone are concentrated in the eyewall—a tall band of winds that surround the eye. Click here for video of the eyewall of Hurricane Katrina: https://www.youtube.com/watch?v=eT5K6FR_eVs&feature=related https://www.youtube.com/watch?v=eT5K6FR_eVs&feature=related

15 * A cyclone will last until it can no longer produce enough energy to sustain itself. * This usually happens when the storm has moved over land or over colder water.

16 * There are many dangers associated with hurricanes: * Storm Surge * High Winds * Heavy Rains and Flooding * Tornadoes * Rip Tides

17 * Storm surge is water pushed towards the shore by the force of the winds surrounding a hurricane. * The storm surge can combine with normal tides and increase the water level by 30 feet or more. * Storm surge can cause extensive damage, flooding, and loss of life. * Click here for a video about storm surge: http://oceantoday.noaa.gov/hurricanestormsurge/ http://oceantoday.noaa.gov/hurricanestormsurge/

18 * n 2005, the storm surge from Hurricane Katrina left some parts of New Orleans more than 20 feet under water. * Much of New Orleans was below sea level and protected by levees, massive earthen flood walls designed to keep high waters out of the city. * The surge overtopped the levees, destroying homes and killing hundreds of people. Engineers caution that Katrina wasn’t even a direct hit on New Orleans. They are working to protect the city from the next big storm surge. Click here for video: Hurricane Katrina, National Geographic: http://video.nationalgeographic.com/video/news/katrina- formation

19 * Strong winds are the most common means of destruction associated with hurricanes. Their sometimes continuous barrage can uproot trees, knock over buildings and homes, fling potentially deadly debris around, sink or ground boats, and flip cars.

20 Saffir- Simpson Scale of Wind Speed and Damage from Hurricanes

Download ppt "Weather and Climate Unit Investigative Science. * Normally peaceful, tropical oceans are capable of producing one of Earth’s most violent weather systems—tropical."

Similar presentations

What is a hurricane? A severe, rotating tropical storm with heavy rains and cyclonic winds exceeding 74 mph.

What is a hurricane? A severe, rotating tropical storm with heavy rains and cyclonic winds exceeding 74 mph.
{ How Hurricanes Form Tropical Cyclones.  As you watch the animation, record your observations about the motion of Hurricane Katrina. Hurricane Katrina.

{ How Hurricanes Form Tropical Cyclones.  As you watch the animation, record your observations about the motion of Hurricane Katrina. Hurricane Katrina.
Tropical Storms. Tropical Cyclone Tropical cyclones are large, rotating, low- pressure storms that form over water during summer and fall in the tropics.

Tropical Storms. Tropical Cyclone Tropical cyclones are large, rotating, low- pressure storms that form over water during summer and fall in the tropics.
Quick Hurricane Facts For YOU!. What is a Hurricane? Intense low-pressure storms that have sustained winds of at LEAST 74mph – an organized system of.

Quick Hurricane Facts For YOU!. What is a Hurricane? Intense low-pressure storms that have sustained winds of at LEAST 74mph – an organized system of.
Objectives Identify the conditions required for tropical cyclones to form. Describe the life cycle of a tropical cyclone. Recognize the dangers of hurricanes.

Objectives Identify the conditions required for tropical cyclones to form. Describe the life cycle of a tropical cyclone. Recognize the dangers of hurricanes.
Earth’s Weather and Climate

Earth’s Weather and Climate
IntroIntro Objective 04/27/12 Describe the formation of hurricanes. What is the difference between a hurricane, a typhoon, and a cyclone?

IntroIntro Objective 04/27/12 Describe the formation of hurricanes. What is the difference between a hurricane, a typhoon, and a cyclone?
Section 17.1 Notes Weather changes as air masses move.

Section 17.1 Notes Weather changes as air masses move.
Chapter 11 Notes Hurricanes. Tropical Storms Boris and Christiana Together-2008 Profile of a Hurrican Most hurricanes form between the latitudes of 5.

Chapter 11 Notes Hurricanes. Tropical Storms Boris and Christiana Together-2008 Profile of a Hurrican Most hurricanes form between the latitudes of 5.
Do Now 2/14/13 1. The hardest mineral is _______ and the softest mineral is ________. 2. The highest point of a wave is called the ________. 3. Nitrogen.

Do Now 2/14/13 1. The hardest mineral is _______ and the softest mineral is ________. 2. The highest point of a wave is called the ________. 3. Nitrogen.
Chapter 11 Hurricanes. Hurricane Katrina Flooded 80% of New Orleans The US’s deadliest hurricane in terms of deaths happened in 1900 in Galveston, Tx.

Chapter 11 Hurricanes. Hurricane Katrina Flooded 80% of New Orleans The US’s deadliest hurricane in terms of deaths happened in 1900 in Galveston, Tx.
Tropical Storms: Hurricanes and Cyclones UNIT 10 STANDARDS: NCES 2.5.2, 2.5.3, 2.5.5, 2.6.1, 2.6.2, 2.6.4 LESSON 5.

Tropical Storms: Hurricanes and Cyclones UNIT 10 STANDARDS: NCES 2.5.2, 2.5.3, 2.5.5, 2.6.1, 2.6.2, LESSON 5.
Severe Weather. Thunderstorms Small intense systems that can produce strong winds, rain, lightning and thunder. Need 2 conditions –Air near surface needs.

Severe Weather. Thunderstorms Small intense systems that can produce strong winds, rain, lightning and thunder. Need 2 conditions –Air near surface needs.
Severe Weather Patterns. Hurricanes Form Over Warm Ocean Water Near the equator, warm ocean water provides the energy that can turn a low-pressure center.

Severe Weather Patterns. Hurricanes Form Over Warm Ocean Water Near the equator, warm ocean water provides the energy that can turn a low-pressure center.
Hurricanes Hurricanes form in the water. From space they look like a huge cloud with an eye in the middle. Only a few hurricanes made it to land, when.

Hurricanes Hurricanes form in the water. From space they look like a huge cloud with an eye in the middle. Only a few hurricanes made it to land, when.
 Hurricanes are areas of low air pressure that form over oceans in tropical climate regions.  Hurricanes hit land with tremendous force, bringing.

 Hurricanes are areas of low air pressure that form over oceans in tropical climate regions.  Hurricanes hit land with tremendous force, bringing.
Lynette Kampa Kiva Elementary A hurricane is a powerful storm that begins over a warm ocean as a cluster of thunderstorms. This group or cluster of thunderstorms.

Lynette Kampa Kiva Elementary A hurricane is a powerful storm that begins over a warm ocean as a cluster of thunderstorms. This group or cluster of thunderstorms.
Nature of Storms Chapter 13.

Nature of Storms Chapter 13.
Hurricanes. I. How Hurricanes Form A. Start off the coast of Africa as a Low Pressure System or tropical disturbance B. Warm tropical water in the Atlantic.

Hurricanes. I. How Hurricanes Form A. Start off the coast of Africa as a Low Pressure System or tropical disturbance B. Warm tropical water in the Atlantic.
Weather Patterns (57) An air mass is a large body of air that has properties similar to the part of Earth’s surface over which it develops. Six major air.

Weather Patterns (57) An air mass is a large body of air that has properties similar to the part of Earth’s surface over which it develops. Six major air.

Similar presentations

Ads by Google