This website uses data feeds from various US agencies and plots them on zoomable maps. You can get plots for various 'altitudes', and get data for specific locations, or just let it figure out where you are.
It's also pretty, hypnotic, and an amazing demonstration of what can be done these days with all the information sources there are out there.
It's also pretty, hypnotic, and an amazing demonstration of what can be done these days with all the information sources there are out there.