Samhain Thanksgiving Moon
Found this on MPR’s updraft blog.
It’s called”Bomb Cyclogenesis.” That’s the weather geeky term given to rapidly 
intensifying east coast lows that spin up and deepen rapidly. East Coast bombs feed off of warm Atlantic and Gulf Stream waters, and cold air diving south from Canada. It’s a unique geographic situation. The following explanation from this website.
Simply put, bomb cyclogenesis is the formation of an “extratropical area of low pressure in which the central barometric pressure drops at least 24 millibars in 24 hours.” [1] However, it should be noted that this represents the most common case in areas that are north of 60 degrees latitude. Sanders and Gyakum, who coined the term “Bomb Cyclones” set the pressure falls needed to reach bomb status at 19 millibars in 24 hours at 45 degrees and 23 millibars in 24 hours at 55 degrees.
