|Fig. 1 Tornado trend was up|
In the most recent post of this series I noted that 2014 was continuing a downward count trend (compare Fig. 1 with Fig. 2).
The hypothesis I offered was that when the Polar Vortex completely bit the dust then tornado counts would go up again, because the impediment caused by the disintegrating vortex would fade away eventually (On The Origin of Tornadoes - 6).
A post on another blog paints a picture of a Polar Vortex in trouble, to the point of allowing
|Fig.2 Tornado Trend Is Down|
That same storm was creating tornadoes in the tornado alley area: "The vigorous low pressure system that helped spawn devastating tornadoes in the Dallas area on Saturday is forecast to explode into a monstrous storm over Iceland by Wednesday." (Washington Post)
These types of intrusions, along with the disintegration of the Arctic sea ice, will eventually allow the unique set-up favoring U.S. tornadoes to be restored.
Along with that scenario, it is also likely for more damaging tornadoes to show up as the tornado count goes back up again (On The Origin of Tornadoes - 5).
Change means "not the same" as before, but we only know that the stage is also being set for increasing damage to the already Damaged Global Climate System (The Damaged Global Climate System, 2, 3, 4).
The way things are going in the Arctic, in the next year or so we may see the number of tornadoes going back up.
The previous post in this series is here.