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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

26oct2017 2145 KCYS 0.5 deg ppi anot.png

Showers, primarily snow, as seen in the reflectivity data collected by the NWS Cheyenne, WY radar in a 0.5 deg elevation scan on 26 October 2017. The CSU-CHILL radar collected continuous 9 deg elevation surveillance scans during this same time period. Differential reflectivity variations of several dB were observed in the snow showers near the CSU-CHILL radar. (Full Article...)

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Bright Band. Bright Band.

CSU-CHILL RHI scan through a near-surface bright band located just east of the radar on 17 November 2017. Data are from the X-band channel and have been interpolated to a Cartesian grid in the RHI plane. Reflectivity (top) is enhanced as the frozen hydrometeors melt. Correlation x 10 (bottom) is minimized in the layer where a mixture of frozen and liquid particles exists.

Photo credit: Patrick Kennedy
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