A very dangerous situation developed last night and overnight for Missouri, Illinois, Indiana, Ohio, Arkansas, Kentucky, Tennessee, Alabama and into Mississippi. The storm that brought Denver its first measurable snow quickly moved eastward creating an ideal set up for severe weather across a large swath of the Mississippi River area and into the Ohio Valley. A total of 36 tornadoes were reported with several lasting many miles. Unfortunately there have been multiple reports of life lost along with damage to structures. Most if not all the tornado activity occurred after sunset, making a dangerous situation even worse. Below is the preliminary storm report provided by the Storm Prediction Center at the National Weather Service in Norman, OK:
Additional tornado information can be found here: https://www.spc.noaa.gov/faq/tornado/