CNN CNN Newsroom March 24, 2014 18:09:00
Or outside the circle. thats the doppler effect. ill take you to what i believe the doppler effect is especially for the first ping. we say 2:11. within a couple hundred miles. the plane was flying inside the ring which means it was getting closer to the satellite itself. so this is doppler radar. we use doppler radar to know this is tuscaloosas tornado. is th this is moving this way by doppler shift. we knew at the time there was a tornado on the ground right there at tuscaloosa. where else can...
Source: archive.org