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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

MPS and SN36 23May 2015 2042 450w inset 2.png

Drop size distribution (DSD) derived from the combined measurements from two optical disdrometers (an MPS and a 2DVD) installed at the Easton Airport (13 km SSE of CSU-CHILL). This rainfall was associated with ~50 dBZ reflectivity at Easton (PPI inset plot). The red dashed line is a generalized gamma distribution fit to the composite DSD data. Three minute DSDs, their fits, and the CSU-CHILL dual-polarization data from various rain rates measured at Easton on 23 May 2015 have been prepared. (Full Article...)

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Thunderstorm cold pool. Thunderstorm cold pool.

Surface-based cold air advances towards the CSU-CHILL radar due to outflow from a thunderstorm located at ~15 km range. The reflectivity pattern seen in this RHI scan shows wave-like variations in the cold air depth.

Photo credit: Patrick Kennedy
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