While you’ll most likely hear both the number of tornadoes and the number of reports of tornadoes in the media this weekend, these terms are not synonymous. Rather than go into that explanation here, I’ll refer you to the literally, the best weather blog ever (ha!)–mine.
The specific post on cloudyandcool.com is called Tornadoes and Reports of Tornadoes.
–Paul
Everything Language and Grammar 
I strongly recommend your highly informative weather blog to your audience,who are from far and wide.Their precious time will be well-spent.