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Understanding Natural Disasters: Facts & Impacts for Safety

Learn about earthquakes, landslides, hurricanes, tornadoes, tsunamis, floods, and volcanoes - their causes, effects, and safety measures. Get insights on how to prepare and stay safe during these disasters. Helpful resources included.

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Understanding Natural Disasters: Facts & Impacts for Safety

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  1. Natural Disasters

  2. What are they? • A natural disaster is a major adverse event resulting fromnatural processes of the Earth; examples are floods, hurricanes, tornadoes, volcanic eruptions, earthquakes, tsunamis, landslides, and other geologic processes.

  3. Wildfiresor Forrest Fires • Unlike most natural disasters, wildfires are often started by people. • https://www.nationalgeographic.com/environment/natural-disasters/wildfires/

  4. Earthquakes • Earthquakes are unpredictable and can strike with enough force to bring buildings down. Caused by plate tectonics along seams of plates. • They are shaking ground, ground rupture, landslides, tsunamis, and liquefaction • https://video.nationalgeographic.com/video/101-videos/00000144-0a2d-d3cb-a96c-7b2d6cd80000

  5. Landslides/Mudslides • Strike where the land is loose. • Happen many times after wild fires, earthquakes, volcanic eruptions or other natural disasters. • https://video.nationalgeographic.com/tv/00000144-6e92-d2d8-ad45-ffba0ab10000 • https://video.nationalgeographic.com/video/00000144-0a2d-d3cb-a96c-7b2d85380000

  6. Hurricanes https://video.nationalgeographic.com/video/101-videos/00000165-c429-de15-afef-c73da3c90000 • Needs warm water from the ocean and a low pressure area • Hurricanes are massive storm systems that form over warm ocean waters and move toward land. Potential threats from hurricanes include powerful winds, heavy rainfall, storm surges, coastal and inland flooding, rip currents, tornadoes, and landslides. • Starts as a tropical storm , when gains enough energy and winds increase to make it a hurricane. • Storm surge is the most devastating effect that accounts for 90 percent of related deaths • National Weather tracks them predicting where they will make landfall

  7. Tornadoes • A tornado is a rapidly 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. You need warm, moist air from the Gulf of Mexico and cool, dry air from Canada. • The windstorm is often referred to as a twister, whirlwind or cyclone. Tornadoes are capable of completely destroying well-made structures, uprooting trees, and hurling objects through the air like deadly missiles. • Tornadoes can occur at any time of day or night and at any time of the year. Although tornadoes are most common in the Central Plains and the southeastern United States, they have been reported in all 50 states.

  8. Tornadoes • Common in our area during spring/summer • The most violent are capable of tremendous destruction with wind speeds of up to 300 mph. • Damage paths can be in excess of one mile wide and 50 miles long. • Flying debris causes many injuries/deaths • https://video.nationalgeographic.com/video/news/101-videos/00000144-0a31-d3cb-a96c-7b3d903d0000

  9. Tsunami • Tsunamis are giant, powerful waves most often caused by earthquakes beneath the ocean floor. Their incredible power can destroy entire communities, then drag the debris out to sea. • Caused by the immense force of the tidal wave hitting the shoreline. • https://video.nationalgeographic.com/video/news/101-videos/00000144-0a30-d3cb-a96c-7b3dc88c0000

  10. Floods • No other kind of natural disaster in America has caused more death and destruction than floods. • Rising water that the ground can not absorb. A flood occurs when water overflows or inundates land that's normally dry. • caused by a storm surge as a result of a tropical cyclone-hurricane, a tsunami or a high tide coinciding with higher than normal river levels. • https://www.nationalgeographic.com/environment/natural-disasters/floods/

  11. Volcanoes • Volcanoes are as dangerous as they are majestic. Over 50 eruptions rock our planet every year. • Caused by tectonic plate movement and erupt when molten rock called magma rises to the surface. • A volcano is a rupture in the crust of Earth, that allows hot lava, volcanic ash, and gases to escape from a magma chamber below the surface. • Volcanologists can predict activity • https://video.nationalgeographic.com/video/101-videos/00000144-0a2c-d3cb-a96c-7b2d221d0000

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