Alright, so it has already been addressed multiple times that in order to receive an NOAA signal you must be within a certain number of miles (40) from an appropriate tower. What you now may be wondering is how you find out if there is an NOAA tower in your area. Thankfully, the NOAA makes this very easy for you and all you need to do is visit their official webpage. When you do so, you will have to navigate to their NWR Transmitter Search page. Here, simply click on the search icon and enter your location. From there, you must click on the transmitter icon to view the details of the specific transmitter.
The NOAA makes a note that the transmitters that show up on their webpage are within a 40-mile radius. Also, they also mention that you can reset the map by simply pressing the reset button.