An Illinois storm chaser filmed footage of a “monster” supercell as severe weather hit the state on April 4.The footage, filmed by Andrew Sytsma, shows the huge supercell looming in the sky over Lewiston.“I can’t believe today was real. I haven’t actually chased in almost a year and what a day to get back into it! A literal mothership in Illinois,” Sytsma said in the tweet.Multiple tornado sightings had been reported in the area, according to local media. Credit: Andrew Sytsma via Storyful