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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.

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18may2017 1703 Z RH10 anot.png

CSU-CHILL S-band 273 deg azimuth RHI scan through a melting layer at 17 UTC on 18 May 2017. Reflectivity (upper panel) shows the "bright band" signature. RhoHV x 10 (lower panel) contains reduced correlations in the melting zone. At the time of this scan, METAR observations reported snow at Ft. Collins - Loveland Airport and rain at Greeley. PPI scan time lapse loops covering the rain to snow transition at Greeley have been prepared. (Full Article...)

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Thunderstorm producing locally heavy rain. Thunderstorm producing locally heavy rain.

High reflectivities (left) in a low elevation angle PPI scan through a thunderstorm over the city of Greeley on 8 May 2017. Corresponding specific propagation differential phase (right) contains Kdp values up to ~8 deg / km due to heavy rain and melting hail. This storm caused significant flooding in Greeley.

Photo credit: Patrick Kennedy
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