The National Weather Service has been putting out new aviation products that use java. One of their new products is the alternate site for radar. NWS RADAR click on a blue bubble to get that sites radar. With the java you can click on the map and then move your pointer to an area of interest. If you look under the radar map you will then be able to see the distance and direction from your original click. So, if you want to see how far a storm cell is from a city this becomes a useful feature. The Java tool will also give you a lat/long for the area of the map your mouse is currently over. More and more of these java tools are coming out from the NWS and you can find them all on Aviation Weather