North Eastern DUers - are you ready for the bad weather
They say hurricane winds and rain - too warm for snow - stay safe 
For the record there have been over 90 tornadoes this month when high 30s has been the norm in recent years. They used to be rare in January (not an alternative fact).
http://www.slate.com/blogs/bad_astronomy/2016/03/09/severe_tornado_outbreaks_are_increasing_over_time.html
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Many tornadoes appear on their own, but the majority are associated with severe storms that spawn multiple tornadoes. These outbreaks can span many hours and cover a lot of territory, and are obviously extremely dangerous. They kill more than 100 people per year on average and cause billions of dollars in damage.
The study looked at tornadoes from 1954 to 2014, applying some statistical analysis to the number and strength of each. What they found is interesting, and a little bit non-intuitive, and also may have implications for the effects of climate change.
First off, they found that the total number of outbreaks per year is fairly steady across the date range, at roughly 20 per year (with lots of fluctuations year to year). The total number of individual tornadoes is also steady, roughly 500 per year (again, with lots of variation).
But that’s not the whole story. The researchers looked at the outbreaks themselves, and found that the number of tornadoes that occur in outbreaks is increasing. It’s going up by about 0.66 percent per year, from about 10 per outbreak in the 1950s to 15 today. That rise is statistically significant (that is, very unlikely to be from random chance).
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