Inside the control room of the experimental Doppler weather radar at NOAA's National Severe Storms Laboratory (NSSL) in Norman, Okla., the storm showed up as a color-coded mass on the radar's television screen.Įxamining the monitor, NOAA researchers Don Burgess and Ken Wilk saw the closely spaced red and green areas near the edge of the storm. Some of the energy was reflected by raindrops in the storm back to the radar antenna. The pulses, measuring 10 centimeters (4 inches) in wave length, penetrated a large thunderstorm some 50 miles to the southwest. Steadily, the 30-foot diameter radar dish rotated, sweeping the Oklahoma prairie with a narrow pencil beam of radio frequency pulses. The following article by Don Witten appeared in the Winter 1984 edition of NOAA Magazine. (National Severe Storms Laboratory photo) Above: Research Doppler radar near Norman, OK in 1970, with WSR-57 radar seen to the right.
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