Keep in mind that we get some of our not important data by flying through these storms that are hundreds of miles in area. It takes time to collect and compute that information even with the best of modern technology. What we do have though is models that we can compare against now like the Euro, GFS, and UKMet and as we forecast with them, they are compared against to see which models are the most accurate so far and with what's happening now there is an increased confidence in the UKMet and Euro for being the most accurate so far. The storm is still days away and we have a pretty good idea that no matter what happens, South FL will see major impact from this storm hence the widespread evacuations that started days ago. The best you can do with a tornado is give live data because we don't know when and where exactly a tornado will strike except for when it decides to do so. It may have a general path but it may 'jump' and touch down again somewhere else and the best we can do is predict it's direction until just before it touches down. All you can say about it a week away is that there is the potential for a storm front to possibly bring tornados where as a hurricane you can have a pretty good idea of what area will be impacted days if not a week ahead of time. We still have two days before the hurricane will potentially hit the US but a majority of people have already been or begun evacuation. You can hardly give people maybe an hour's notice of an incoming tornado other than that area having a high chance of a tornado touching down on any given day.