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National Weather Radar Facility
The CSU-CHILL National Weather Radar Facility, located in Greeley, CO, is an advanced, transportable dual-polarized dual-wavelength (S- and X-band) weather radar system. The facility is operated by Colorado State University, under the sponsorship of the National Science Foundation and the University.

Featured Article

14jul2015 2142 XB Zdr contours anot.png

CSU-CHILL X-band reflectivity data in a low elevation PPI scan through a thunderstorm. Solid white contours enclose the -4 and -8 dB Zdr values marking radials with significant differential attenuation. Time lapse loops showing the evolution of the X-band attenuation effects as this thunderstorm intensified have been prepared. (Full Article...)

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X-band RHI through a bright band. X-band RHI through a bright band.

Enhanced reflectivity values are seen at the melting level (~1.4 km AGL in upper left inset panel). RhoHV correlation coefficient shows a local minimum in the height layer where a variety of hydrometeor types (both liquid drops and melting ice particles) coexist.

Photo credit: Patrick Kennedy
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