Since that deadly tornado occurred at 7:25pm on an early February evening it was dark already.
But that EF-4 funnel couldn't escape detection by freeze-frames of video cameras trained on it- backlit by lighning flashes.
This is an old trick I learned years ago with video cameras shooting storms at night.
You just hope it's not too close or moving at you too fast to stop recording and view the freeze-frames you shot.
Folks that night in Lone Grove didn't have that luxury and nine died.