Natural Disasters in the South: Hurricanes and Flooding Asheville Middle School Thursday, December 8, 2011.

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Presentation transcript:

Natural Disasters in the South: Hurricanes and Flooding Asheville Middle School Thursday, December 8, 2011

You and Hurricanes If your home was to be destroyed and you could only take three things with you, what you take?

Words Hurricanes Flooding Equator Atmosphere Troposphere Dangerous Coriolis Effect Saffir-Simpson Hurricane Scale Categories Wind shear Moisture

Today’s Objective Where do hurricanes form? What conditions do hurricanes need to form? How are hurricanes classified? What are the damages associated with each category of hurricanes? How does geography affect natural disasters?

The Southern United States Population = 313,232,044Square Miles = 3,718,691

Atlantic Beach, Florida

Key West, FL

The Atlantic Ocean

Moonlight on the Mississippi River Ray Ellis

Ecosystems of the World Red- Rainforest Dark Green – Temperate Deciduous Forest Light Green - Taiga Forest Maroon – Chaparral Tan - Grassland Yellow – Savannah Light Blue – Desert Purple - Tundra Red- Rainforest Dark Green – Temperate Deciduous Forest Light Green - Taiga Forest Maroon – Chaparral Tan - Grassland Yellow – Savannah Light Blue – Desert Purple - Tundra

A comparison Earthquakes and volcanoes are non-existent due to plate tectonics. Tornado like events can happen but rarely do.

Precipitation

Average Rainfall in Norway by the month (in mm) JanFebMarAprMayJuneJulyAugSeptOctNovDec

Flooding d=27795

Tornadoes Marilyn Fenn

Hurricanes Winslow Homer

Conditions to Form a Hurricane Warm ocean water (at least 80˚F/ 27˚C) through a depth of about 150 feet An atmosphere that cools fast Moist air near mid-level troposphere A minimum distance from the equator of about 300 miles (but not within 5˚ latitude) A disturbance near the surface Low vertical wind shear between surface and troposphere (of less than 23mph).

The Eye of a Hurricane

Conditions for a Hurricane 1. What causes your temperature to rise? What gets under your skin? 2. Something happens to “cool” your spirits or 3. You are not in the safest place 4. Something disturbs you 5. A vertical wind shear 6. What takes the wind out of your sail

Troposphere Photo by Nick Juhasz

owhurrwork.html

Coriolis Effect Paper plates Ruler Tack Pen or Pencil

Saffir-Simpson Hurricane Scale

Dr. Simpson is on the left.

Category 1 ( kph) All hurricanes are dangerous. If it is a Category 1, you will need a raincoat. The man in the middle will be very wet by the time the bus comes. 74 – 95 mph

Category 1 Hurricanes Mobile homes could be damaged. Small trees could be blown over.

Category 2 (152 – 177 kph) If it is a Category 2 hurricane, you should leave and drive inland. Flooding is associated with hurricanes and a Category 2 hurricane produces lots of water and damaging winds. ( mph)

Category 2 Windows and roofs will be damaged. Some trees and street signs will be blown down. There will be a lot of damage to mobile homes.

Category 3 ( kph) A Category 3 hurricane is very dangerous. ( mph)

Category 3 Roofs and porches will be damaged. Some trees will be blown down.

Category 4 ( kph)

Category 4 In a Category 4 hurricane there will be major damage to roofs, windows, and street signs. Mobile homes will be destroyed.

Category 5 (above 209 kph) Category 5 is the most destructive rating for a hurricane. Category 5 storm surge could be well over 5.5 meters.

George Hilldegard portrays “hurricane”

Earthquakes in the Southern US

Rock Slides

Jobs Associated with Natural Disasters Can any job relate to Meteorologists Norwegian Meteorological Institute Mathematics County Government Directorate of Public Roads Environmental Science Singer/songwriters natural disasters? Water Resources and Energy Directorate Engineering Emergency Services Writers Artists, Newscasters Reporters Fishermen

Words Hurricanes Flooding Equator Atmosphere Troposphere Dangerous Coriolis Effect Saffir-Simpson Hurricane Scale Categories

Today’s Objective Where do hurricanes form? What conditions do hurricanes need to form? How are hurricanes classified? What are the damages associated with each category of hurricanes? How does geography affect natural disasters?

Your Task Using the knowledge you have or the ideas this presentation has given you…. Choose a medium (art, music, drama, poetry) to illustrate your understanding of how natural disasters are impacted by geography.

References Førland, E. (2006). Climate change and natural disasters in Norway – An assessment of possible future changes. Meteorologisk Institutt met.no. Retrieved from Flood forecasting system Retrieved from: landslides/Flood-forecasting-system/ landslides/Flood-forecasting-system/ NOAA (2011) Retrieved from: