Exclamation mark on record onslaught on US landing

Over the last two years, hurricanes have struck, strengthened, and struck the United States at record paces. And Aida can fall as one of the most annoying of the dangerous population.

Although not a record record, Ida is one of the strongest and fastest storms in over 150 years of hurricane records.

According to Colorado State University, when Aida struck Louisiana on Sunday as a category 4 storm with winds of 150 mph (241 km), Aida was “many other notorious storms” and became Thailand fifth. rice field. University hurricane researcher Phil Klotzbach. Behind Labor Day Storm in 1935, Camille in 1969, Andrew in 1992, and Michael in 2018. Wind speeds may change later after both Andrew and Michael have been upgraded to Category 5 storms long after landing and the damage has been reviewed.

But the true historical trace of this storm is its place as an exclamation mark in the recent onslaught of storms.

When Ida landed, it was the 17th storm that hit the United States in the last two years, the sixth in 2021, said Jeff Masters, a former NOAA hurricane hunter meteorologist and founder of Weather Underground. .. Already this year, Claudette, Danny, Elsa, Fred and Henri struck the United States, but when they landed they were all tropical storms.

Over the last 71 years, the United States has landed an average of three storms a year. This year’s pace is slightly behind last year’s record 11 landings in the United States, Masters said.

Aida’s 150mph (240kph) blow to Louisiana on Sunday marked the first time in recorded history that the state had a continuous year of wind over 150mph. Last year, Hurricane Laura struck Louisiana in a wind of 150 mph, and meteorologist Steve Bowen said he was responsible for Aon’s Catastrophe Insights, a risk insurance and consulting firm.

Aida was associated with Laura, Charlie in 2004, and struck the United States in 1932, 1919, 1886, and 1856 with winds of 150 mph.

Eda exploded from 85 mph (137 km) to 150 mph in just 20 hours, easily crossing the official threshold of a rapidly intensifying storm of over 35 mph (56 km) in 24 hours. Ida actually did this twice in a short lifespan.

In a sense, the Masters believe Aida has set a record. Aida was listed at 85 mph 26 hours before landing (up to 100 mph 23 hours before landing). Using a value of 85 mph, the hurricane increased by 65 mph (105 kph) in the 24 hours prior to landing, closing the record set by Humberto in 2007 for the most rapid intensification the day before landing.

Meteorologists rank hurricanes by central pressure in addition to wind speed, and the lower the pressure, the stronger the storm. According to this measurement, Ida at landing was not ranked very high at a pressure of 930 millibars. It led to the ninth strongest storm on landing, far behind the 1935 Workers’ Day storm of 892 mb, and even the slower but 920 millibar pressure of Katrina in 2005.

According to Sam Lilo, a meteorologist at the University of Colorado, using millibar pressure, Aida dropped 56 mb in 24 hours. This was because there were only nine other Atlantic hurricanes, and Aida was the only one to do it the day before landing.

The deaths and damages of the storm have not yet been counted. The five most costly US storms on record, adjusted to $ 2021, were Katrina in 2005 at $ 176.3 billion, Harvey in 2017 at $ 136.3 billion, Maria in 2017 at $ 98.1 billion, and 2012. Sandy is $ 77.4 billion and Irma in 2017 is $ 54.5 billion.