On Saturday, flash floods broke out Flooded the rural town of Waverley, Tennessee, Destroying the bridge, and in some cases even sweeping the entire house from the foundation. Seventeen inches of rain– Status record The most rain of the day-causing the network of rivers and creeks in the area to burst. Some residents call the turbulent water “Tidal wave“The water flow is so fast that there is almost no time to evacuate. Thousands of people are trapped in Waverley. As of Monday, 21 people have been reported dead and 40 others are missing.
Further north, Tropical Storm Henry brought heavy rain to large areas of the central Atlantic and southern New England even before it made landfall. On Saturday night, the single-hour rainfall in Central Park in New York City reached a record 1.94 inches, and flooding occurred in the coastal areas of New York and New Jersey throughout the weekend.Seen from a small town in Cranbury, New Jersey More than 9 inches of rainfall From the storm, and First responder Forced to rescue many people from turbulent floods and watery roads.
At the same time, along the Gulf Coast, hurricane-style lace also brought heavy rains and floods—and 125 miles per hour wind speed — It made landfall in the form of a Category 3 hurricane at around 1:00 AM on Saturday. This is one of the two strongest hurricanes in Campeche Bay’s history. At least eight people Has died in the storm, and the other three are missing. Almost all reported deaths occurred in the state capital of Xalapa, and local TV stations showed the coffins of local companies floating on flooded city streets. According to ReutersAt the same time, the storm has caused power outages, affecting more than 500,000 people.
Kerry Emanuel, a climate scientist at the Massachusetts Institute of Technology, said it is difficult to attribute any specific event to climate change. However, he said that there is reliable evidence that global warming is driving an increase in the frequency of extremely destructive tropical storms and heavy rainfall.
“These events give us the opportunity to discuss how climate change affects hurricanes and floods,” Emanuel said.
In general, there is a strong consensus in the scientific community that the increase in temperature will cause the storm to produce more rainfall, because A warm atmosphere can hold more water vaporAccording to a press release from the non-profit scientific initiative Climate Signals, the “large amounts” of rainfall generated in Tennessee are “fingerprints of climate change everywhere.”A sort of Study in 2020 For example, a paper published in the Proceedings of the National Academy of Sciences attributed the increase in one-day extreme precipitation events in North America to human-induced climate change.
The tropical cyclones that hit the northeast and Mexico this weekend also have more climate background. The warm waters of the Atlantic Ocean– Closely related to human activities — Help lay the foundation for the formation of a hurricane, and scientists are currently recording the temperature there 7 to 9 degrees Fahrenheit above average this time every year.And sea level rise is Intensify the storm surge, Making the hurricane more dangerous.
Meteorologist Bob Hansen and hurricane scientist Jeff Masters concluded: “Henry’s excessive rainfall must be consistent with what we humans are doing on a global scale with the changing climate.” Writing in the Yale Climate Connection.
Scientists also stated that highly violent storms like Grace have become More common in the past 40 years, And as the global temperature rises, the wind speed may increase. “The speed limit of the hurricane is rising,” Emanuel said. “In the next 20 years, I expect to see new records broken all over the world.”