According to the Storm Prediction Center tornadic activity is really slowing down. Of course, severe weather usually does slow down during the summer, but we could be trending below average after a very busy start to 2012.
"Has it seemed like late spring into summer has been relatively quiet with regards to tornado reports? Check out the trend for tornado reports as of July 31, 2012 versus the previous 7 years. We may have started out 2012 above average but we may be headed for a below average year overall!"