They were very intense in the 70's cycle. They would scare the heck out of you, and make the electricity box spark. They could blow lightbulbs that weren't turned on. Right now, one of these is coming in. It is preceeded by strong winds.
Once there was a tornado that came right at us. The tornadoes were more common in the warm cycle of the last few decades. It was like being under water. The rain came at us horizontal from the lake. Water poured in from the upper vent. After, we saw several trees knocked down.
During the cold cycle, we never had tornadoes, but much more intense electricity. Cottages would get burned down from lightning strikes. I dread the whole change, and the dog is under the bed. This one coming now is very small but very intense.