The National Weather Service in Paducah has confirmed what many in the Tri-State already suspected: We have a lot of tornadoes that occur in the overnight hours.
Using Data from 1950-2005, the NWS has identified a "Nocturnal Tornado Alley". As the chart shows, more than 40% of our tornadoes have occured at night.
Between 1996 and 2012, 46 people have died in tornadoes in the Paducah warning area (most of the Tri-State).