This kind of distant and deadly flood due to a hurricane has occurred before, and meteorologists have warned that Aida could cause it.
Ida lost most of the 150 mph (240 km) of wind, but the storm maintained a core of heavy rain. Later, according to meteorologists and atmospheric scientists, it merged with a moist, enhanced non-tropical cyclone front.
When this happens, “very exceptional rainfall can occur,” said Kerry Emanuel, a professor of meteorology at MIT.
“This is not uncommon,” added Emmanuel. “For example, the 1969 Hurricane Camille followed a similar path.” Camille flooded more than 100 people in Virginia after landing as a Category 5 hurricane in Mississippi.
Yale Climate Connections meteorologist Bob Henson said that in 2004 Hurricane Ivan followed a similar trajectory, causing record rainfall in Pittsburgh. In the case of Mr. Ida, “the conditions for raining are ripe and everything bears fruit along the I-95 corridor,” he said.
The storm rained more than three inches in New York’s Central Park in just one hour Wednesday night, erasing records set by tropical cyclones Henri within two weeks. In parts of New Jersey, Massachusetts, Rhode Island, and Pennsylvania, it rained more than nine inches.
The death toll and the amount of damage are increasing.
“Some of these were unlucky,” said Brian McNordi, a hurricane researcher at the University of Miami. “If Aida had only tracked 100 miles further east, the heaviest rainfall would be at sea and who. You wouldn’t mind either. “
“The threat of stormy weather and flash floods in these areas was a very predicted few days ago, but it does not reduce the destruction they cause,” McNordi warned the National Weather Service from Monday and Tuesday. Was attached and stated in the email.
Ken Kunkel, a U.S. National Oceanic and Atmospheric Administration meteorologist who specializes in extreme rainfall and heat, said a few years ago his study found that one-third of extreme rainfall events in the northeast were hurricanes. It was due to the remains of a tropical cyclone.
According to experts, anthropogenic global warming from the burning of fossil fuels is also likely to have exacerbated Aida’s widespread impact a bit.
Jeff Masters, a former hurricane hunter meteorologist at Yale Climate Connections, said that warmer air holds more moisture than it can throw away. He said the air above the sea was about 10% more moist than it was in 1970 and came down in a storm.
The excess water condenses inside the storm, releasing excess heat energy. This creates an updraft, which makes the storm more intense and longer lasting. Said.
According to Marshall Shepherd, a professor of meteorology at the University of Georgia, heavy rains are pouring into urban areas and pavements such as roads and parking lots are exacerbating water outflows and causing floods. “The human impact is part of a flood disaster that is often overlooked.”
Adam Sobel, a climate scientist at Columbia University, said more has to be done since Superstorm Sandy in 2012, despite plans and efforts to increase resistance to extreme weather events. .. “Obviously, our infrastructure doesn’t support such events.”
This Associated Press series was created in collaboration with the Science Education Department of the Howard Hughes Medical Institute. AP is solely responsible for all content.
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Hurricane Aida: Why was the storm so deadly in the New York area of New Jersey, 1000 miles from land?
Source link Hurricane Aida: Why was the storm so deadly in the New York area of New Jersey, 1000 miles from land?