The tornado model which is for sale on Payhip has an interactive button that one clicks and it gives a text forecast for each city that is covered. When a tornado threat is likely for a city covered then a new interactive button appears with visual information. There is an interactive GPSlocatered within the app that will give one information about their location but no one else can see where they are. This is a specific GPS locator for the user only. This is extremely helpful if in the woods or somewhere not known to the person who has the app. Also, forecasts for the day of the tornado event will appear within the app that are not associated with NWS or other weather companies. These forecasts have been accurate to the street in the past before tornado occurred. One can visit the Payhip site to see reviews of the product from people who have purchased it. If you are interested in the tornado model please click the shop link above.