Does anyone know what natural disasters have happened in America? Say something influential, such as a topic.

Ten most serious natural disasters in the United States in the past century: 1, Hurricane Galveston (1September 8, 900)1September 8, 900. On the morning of September 8, 2000, a category 4 hurricane landed in Galveston at a speed of 135 mph. Only 18 hours, the buildings in the city are in Galveston. * * * caused 8000 deaths. This is the most serious and destructive hurricane disaster in American history. 2. Hurricane Katrina (August 29, 2005) On August 29, 2005, Hurricane Katrina in the Atlantic Ocean hit southern Florida as the number one hurricane and brought the most painful economic disaster in American history. Hurricane Katrina reached a speed of 125 miles per hour on the Louisiana coast. The hurricane destroyed the flood levees in New Orleans, and 80% of the urban area of New Orleans was submerged by seawater, with the death toll reaching 1.836, resulting in a loss of1.25 billion US dollars. 3. Sandstorm (65,438+0,930' s) In the early days of 65,438+0,930' s, the Great Plains of the United States was once a paradise for farmers, and the First World War intensified. A large number of immigrants came to the green soil in the south of the Great Plains to farm. However, the original vegetation structure of the land was destroyed by wanton agricultural reclamation. In the past, the grass roots and roots in the Great Plains could consolidate moist soil, but after the agricultural destruction, the government could only contribute to the reconstruction of vegetation in arid climate. After more than ten years of agricultural reclamation and destruction, the original green soil has gradually turned into soft topsoil and dust. Coupled with the storm blowing eastward, a large amount of yellow dust mixed in the air has formed sandstorms, making the sky along the Atlantic coast dim and colorless. According to statistics, a large area of vegetation and crops have been deserted, one-third of farmers need government relief, and about 500 thousand local residents have left this land. 4. San Francisco fire and earthquake (1906 April18)1906 April 65438. A scene that lasted less than a minute shocked the residents of San Francisco, and then the earthquake destroyed the natural gas and water supply system, resulting in a four-day disaster in San Francisco. The earthquake of magnitude 7.7-7.9 not only damaged the natural gas pipeline and caused a large-scale fire, but also damaged the water supply system, making it impossible for the fire department to put out the fire quickly. When the fire was put out, more than 500 buildings in San Francisco were swallowed up by the fire. 3,000 people were killed in the disaster and about 225,000 people were homeless. 5. Hurricane Oki Joby (1928 September16) In September 2008, the weather forecast predicted that there would be a strong hurricane in Lake Oki Joby, and the government advised local residents to evacuate the area. However, at the expected time of the hurricane, the hurricane did not land. I'm back in Lake Okikobi. /kloc-On the night of September, 2006, the hurricane hit Lake Okikobi at the speed of140mph, which caused the surge to destroy the small dike at the south end of Lake Okikobi, thus forming a week-long flood. Killed at least 2500 people. 1June 1980 heat wave (1summer 1980) 1980 high temperature weather is the most serious climate disaster in American history. The ridge of high pressure (the extension of relatively high atmospheric pressure) crosses the central and southern parts of the United States, making the summer temperature in this area reach 90 degrees Fahrenheit. Kansas is like this from June to September. The temperature in Fort Worth, Dallas, Texas continued to be as high as 100 degrees Fahrenheit for 69 days, and the highest temperature reached 1 17 degrees Fahrenheit on June 26th and 27th. According to statistics, drought and high temperature caused agricultural economic losses of $48 billion. 65,438+00,000 people died of high temperature and disease. 7, 65,438+0988 heat wave (summer of 65,438+0988) Due to the influence of the summer heat wave of 65,438+0988 in the United States, American crops were greatly reduced in one year. The economic loss is over 6 1 100 million dollars. The total rainfall in the Great Plains from April to June is even less than that in the dust ball. Wildfires often occur in Yellowstone National Park and Ross Mountain National Memorial Park because of the hot and dry weather. In hot weather, 5000- 10000 people in the United States have health complications. 8. Johnston flood (1889may31)19 At the end of the year, the small industrial zone in Johnston, Pennsylvania was famous for producing high-quality stainless steel, but in May of1889, the old maintenance of the South Fork Dam on the mountain caused the dam to crack, and more than 20 million tons of water and debris accompanied the niagara river. In this disaster, 65,438+0,600 houses were destroyed. 2209 people were killed. 9. Gehuo in Pisti (1871.1.0871.1.00). The fire in Pisti, Wisconsin was the worst fire in American history, and Pisti was originally a very dry city. A small ranch fire quickly spread to millions of acres of forest. The fire crossed the Pistig River and headed for the city. According to statistics, the fire damaged 12 towns, 1200 people died, 10 people died, and the tri-state tornado (165438+ in March, 925) became the deadliest disaster in the heart of the United States, and its attack paths included Illinois, Indiana and Missouri. The tornado destroyed more than 1.5 million houses, and nearly 700 people died, including 6 1.3 people from Illinois. After this disaster, the American government realized the harm of tornado, and then the meteorological forecasting department began to pay close attention to and build a tornado early warning system, thus saving many lives.

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