Yes, it's an obvious fact that storm chasing is dangerous, but it's even more so in the rural areas of Illinois. One storm chaser recently discovered a 'monster lurking in the corn' - a massive EF-2 tornado that he couldn't see initially because a field of corn was blocking his view.
If you're a storm chaser, the danger doesn't just come from the tornadoes that might drop out of the clouds. In the case of one storm chaser in Missouri today, it was hail the size of baseballs and softballs that completely destroyed his windshield.