The SCS outbreak, which brought damaging winds and hail, occurred between December 9th and December 12th, and tornado activity was reported in at least six US states, including Arkansas, Illinois, Missouri, Mississippi, Tennessee, and Kentucky.
There have been 60 reports of tornadoes and over 350 reports of damaging wind gusts, according to KCC.
According to KCC, the storms were fueled by the interaction of above-normal temperatures and anomalous moisture, which allowed for a large amount of available atmospheric instability.
The majority of the damage was caused by the 'Quad-State Tornado,' which impacted four states in four hours along a path more than 200 miles long.
Both the Warren and Graves counties in Kentucky suffered significant damage, with reports of hundreds of homes and businesses being destroyed.
There have been thousands of reports of damage and hundreds of reports of homes or buildings destroyed, including factories and warehouses.
The $3 billion insured loss estimate from KCC comes after insurance and reinsurance broker Aon predicted a multi-billion dollar tornado outbreak in the United States.
Swiss Re reported earlier today that annual re/insured losses from natural disasters in 2021 would total $112 billion, excluding any losses related to the US tornado outbreak.