Tornadoes are NOT getting worse.

Watts Up With That?

By Paul Homewood

torngraph

http://www.spc.noaa.gov/wcm/#data

As we, fortunately, head towards the end of the third quiet tornado year in a row, let’s take a closer look at the intensity of tornadoes in the US.

We often hear claims that tornadoes are growing stronger as a result of global warming. But what do the facts tell us?

NOAA’s Storm Prediction Center maintains a database of tornadoes back to 1950. However, it is generally accepted by tornado experts that data is unreliable from the 1950’s and 60’s, which were known as the “tornado growth period”, as observation practices began to develop.

Another problem during these early decades was that, according to the SPC’s Greg Carbin, there were too many higher-rated tornadoes because of post rating.

Therefore, any analysis can only be reliably started from 1970.

It is also well accepted that many more small EF-0 tornadoes are spotted nowadays, that would…

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