Got the distance setting out to 16 miles, but I've already heard the thunder, and the storm has long ago passed, before I'm not getting alerts for the area in which the the storm came from. And I may have heard 6 or 8 different thunder rolls over the 15+\- minutes before before the storm, but only got 1 alert for 1 location:/)
Update: The developer of this app contacted me and advised that the App only updates every 90 minutes, which is pretty much useless in my mind:). Once every 5 minutes is probably more realistic and useful to my line of thinking. By the time 90 minutes passes with a fast moving storm, the storm could come and go and you could be a crispy critter and never get an alert:).
Like I said "a little slow on the draw".