Презентация на тему "Weatherhazards in the Usa"

Содержание

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  Weatherhazards in the USA

  Glushkova Julia, N-51

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  Weather hazards

  Earthquakes Fires Floods Hurricanes

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  Earthquakes

  Earthquakes (quakes, tremors, temblors) are the result of a sudden release of energy in the Earth's crust that creates seismic waves. Craft of the earthquakes is measured by the moment magnitude scale and Richter scale. The earthquake with magnitude 3 and lower is called as imperceptible and one with magnitude 9 and over is called serious.

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  Earthquakes

  They cause the earth shaking and sometimes displacement of the ground. When the epicenter of a large earthquake is located offshore, it’s a reason for tsunami and volcano activity.

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  The areas, where the earthquakes take place

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  The areas, where the earthquakes occur

  California and Alaska in the U.S. Guatemala Chile Peru Indonesia Iran Pakistan Portugal Turkey New Zealand Greece Italy Japan Australia

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  Forest Fires

  A wildfire in California, 5 September 2008 Forest fire are any uncontrolled fire, which occurs in forests from the middle summer to autumn begin.

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  Floods

  Flooding along Beale Street in downtown Memphis, Tennessee A flood is an overflow of an expanse of water that submerges land. In April 2011, two major storm systems deposited record levels of rainfall on the Mississippi River watershed. When that additional water combined with the springtime snowmelt, the river and many of its tributaries began to swell to record levels by the beginning of May. Areas along the Mississippi itself experiencing flooding include Illinois, Missouri, Kentucky, Tennessee, Arkansas, Mississippi, and Louisiana.

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  Hurricanes

  storm with a violent wind, in particular a tropical cyclone a wind of force 12 on the Beaufort scale (equal to or exceeding 64 knots or 118 kph) Beaufort scale is a scale of wind speed based on a visual estimation of the wind's effects, ranging from force 0 (less than 1 knot or 1 kph, "calm") to force 12 (64 knots or 118 kph and above, "hurricane")

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  The Saffir–Simpson Hurricane Scale (SSHS), classifies hurricanes — Western Hemisphere tropical cyclones that exceed the intensities of tropical depressions and tropical storms — into five categories distinguished by the intensities of their sustained winds. To be classified as a hurricane, a tropical cyclone must have maximum sustained winds of at least 74 mph (33 m/s; 64 kn; 119 km/h) (Category 1). The highest classification in the scale, Category 5, is reserved for storms with winds exceeding 156 mph (70 m/s; 136 kn; 251 km/h). Hurricanes occur in the late summer and early autumn along southern parts of the east coast and the Gulf of Mexico coast.

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  Hurricanes with Names

  Galveston Hurricane Hurricane Irene Hurricane Ivan Hurricane Rita Hurricane Katrina

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  Galveston Hurricane

  Wrecked negro High School building made landfall on the city of Galveston in the U.S. state of Texas, on September 8, 1900. It had estimated winds of 145 miles per hour (233 km/h) at landfall, making it a Category 4 storm on the Saffir–Simpson Hurricane Scale. It was the deadliest hurricane in US history, and the second costliest hurricane in US history based on the US dollar's 2005 value (to compare costs with those of Hurricane Katrina and others).

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  Galveston Hurricane

  The only remaining house near the beach for miles, Galveston, Texas House in Galveston on Avenue N, October 15, 1900

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  Hurricane Irene

  Route of Hurricane Irene Irene made landfall in Antilles, Greater Antilles, Turks and Caicos, the Bahamas, eastern United States (Landfalls in North Carolina, Connecticut, New Jersey, and New York), eastern Canada and got a Category 1 hurricane.

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  Damage

  Damage to the Port Jervis Line A Lexus RX450h damaged by a fallen tree in Washington, D.C.

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  A road washout in New Windsor The Raritan River at New Brunswick on August 29, 2011, one day after Hurricane Irene landfall

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  Hurricane Ivan

  Ivan's "return" Early September 5, Tropical Storm Ivan's winds strengthened to hurricane status 1210 miles (1950 km) east-southeast of the Lesser Antilles. Ivan had rapidly strengthened to a strong category three hurricane (nearly a category four) on the Saffir-Simpson Hurricane Scale with winds of 125 mph (200 km/h). September 16 Ivan struck the US mainland near Gulf Shores, Alabama. At the time, Ivan's maximum sustained winds had dropped to 130 mph (210 km/h), just under Category 4 strength

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  Damage

  damageto I-10 bridge in Pensacola

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  Hurricane Rita

  Storm path Hurricane Rita was the fourth-most intense Atlantic hurricane ever recorded and the most intense tropical cyclone ever observed in the Gulf of Mexico. Rita caused $12 billion in damage on the U.S. Gulf Coast in September 2005. Rita was the seventeenth named storm, tenth hurricane, fifth major hurricane, and third Category 5 hurricane of the historic 2005 Atlantic hurricane season. It came through Bahamas, Cuba, Florida, Louisiana and Texas.

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  Damage

  Church in Beaumont with roof ripped off by Hurricane Rita. A town along the Gulf Coast completely destroyed by Rita

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  Hurricane Katrina

  Storm path Hurricane Katrina was the deadliest and most destructive Atlantic hurricane of the 2005 Atlantic hurricane season. It is the costliest natural disaster, as well as one of the five deadliest hurricanes, in the history of the United States.Among recorded Atlantic hurricanes, it was the sixth strongest overall. At least 1,836 people died in the actual hurricane and in the subsequent floods, making it the deadliest U.S. hurricane since the 1928 Okeechobee hurricane; total property damage was estimated at $81 billion (2005 USD), nearly triple the damage wrought by Hurricane Andrew in 1992.

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  Damage

  Damage to a mobile home in Davie, Florida following Hurricane Katrina Flooding in Venice, Louisiana

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  Damage to Long Beach, Mississippi following Hurricane Katrina U.S. Route 90's Bay St. Louis Bridge on Pass Christian was destroyed as a result of Katrina.