I have discussed numerous times that severe weather is caused by differences in energy, normally across frontal boundaries. April has been characterized by very cold temperatures in half the US, and very warm temperatures in the other half. As cold air from the north pushes under warm moist air in the south, we get violent weather in the south.
According to the Weather Channel, April has surpassed 1974 in terms of numbers of tornadoes. Part of this is due to better detection, but mainly it is due to strong contrasts in temperature.
Is this due to global warming? Of course not. If every place was warm there would be very little weather – like Hawaii. The reason for the stormy weather is La Nina. This obvious fact won’t stop the global warming community from piling on the BS even deeper ….