Extreme weather sweeps across US, billions in losses predicted by Aon

Aon’s latest weekly cat report, ending May 10, highlights ongoing severe weather across the United States, with predictions of significant economic losses in the billions, particularly affecting the Southern Convective States (SCS).

From May 2 to May 5, Texas experienced heavy rainfall, worsening existing flooding problems. Some areas received over 20 inches of rain, leading to significant flooding. Tornado activity added to the chaos, with an EF-3 tornado near Hawley boasting peak winds of 165 mph.

According to the National Weather Service (NWS) office in Houston, several locations north of Houston received over 20 inches of rain, with a local maximum of 23.32 inches near Lake Livingston.

Between May 6 and May 8, severe weather intensified across the Great Plains and Midwest, prompting rare “High Risk” warnings from the Storm Prediction Center (SPC). Oklahoma and southern Kansas faced numerous tornadoes, notably an EF-4 tornado in Oklahoma with winds up to 175 mph.

Michigan also endured severe storms and tornadoes during this period, with its first-ever tornado emergency declared.

The following day, severe storms heavily impacted an area spanning from Kansas to the Carolinas. The SPC received 762 preliminary storm reports on May 8 alone, primarily hail and wind reports. Several reports noted very large hail over 3 inches in diameter, primarily from Missouri, Tennessee, and North Carolina.

In Tennessee, deadly tornadoes and flash flooding caused significant damage, prompting flash flood emergencies in several counties.

The affected states faced considerable flash and river flooding, resulting in over 600 people being rescued from floodwaters in eastern Texas alone. The floods caused two deaths, damaged at least 800 structures, and affected dozens of counties.

The aftermath left significant damage, with over 1,200 homes damaged or destroyed across northeast Oklahoma alone. In Michigan, a tornado in the Kalamazoo metro area caused extensive damage to a FedEx facility and destroyed 30 mobile homes, resulting in injuries to at least 16 people.

Financially, the impact is expected to be significant, with economic and insured losses likely reaching into the billions of dollars.

In another recent report, Aon highlighted a severe weather outbreak from April 25 to May 2, causing catastrophic damage in Nebraska, Iowa, and Oklahoma, potentially leading to billions of dollars in losses.

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