blog posts How common are December tornadoes in the US and why are they so dangerous? Dec 14, 2021 8:30 am by Lois YoksoulianExpert Viewpoints Share on Facebook Tweet Email Images Even though December tornadoes are rare, they pose a significant threat because of their unexpectedness and tendency to occur after sunset while people are sleeping, unaware of the impending danger, says Professor (Robert) Jeff Trapp. Share on Facebook Tweet Email