http://radar.weather.gov/

http://www.weather.com/maps/dopplerradarusnational.html

http://en.wikipedia.org/wiki/Weather_radar

http://www.gowally.com/wx/radar.html

http://www.intellicast.com/LocalWeather/World/UnitedStates/Radar/

http://www.srh.noaa.gov/srh/jetstream/doppler/doppler_intro.htm

http://radar.weather.gov/ridge/Conus/index.php

http://www.kmov.com/weather/doppler.html

http://www.king5.com/weather/doppler/?seattle

http://www.statesman.com/weather/content/shared/weather/austin_doppler_anim.html