One interesting thing to note about last year, was the unusually low number of deaths in the U.S. due to tornados. I think it almost, or did set a record. That's a very curious statistic to me. I'm planning to watch the tornado death count late spring to see what happens.
I speculate that the number of deaths due to tornados was low, mostly because of a relaxed jet stream. Perhaps when the late spring jet stream relaxes it's dynamic, the atmosphere signals a more favorable environment for hurricane structures later in the year.
Dr. Gray is still learning, and I expect he saw this variable as well. He may even tweak his numbers some as a result. It's too bad he didn't predict the great number of hurricane deaths last year.
No one puts any stock in death meters these days. Spiritual gifts are deemed nonsense, but how much more valuable could they be to a nation? If you see lightning and do not hear the thunder, will you fear it enough to save your life? If you hear the thunder, but do not see the flash, how will you know where to go to avoid the fatal strike? The wise nation sees the flash, and hears the thunder.