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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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10aug2015 2112 Zdr Kdp overlay anot.png

Low elevation angle CSU-CHILL PPI scan through a developing thunderstorm precipitation shaft on 10 August 2015. The most positive Zdr values (white contour) are displaced towards the leading edge of the storm by drop size sorting effects. Plots depicting the evolving dual polarization characteristics of this precipitation area have been prepared. (Full Article...)

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Active Cumulonimbus. Active Cumulonimbus.

CSU-CHILL S-band radial velocities in an RHI scan through an active thunderstorm on 3 August 2011. Storm top divergence located above low-level convergence implies strong updrafts. Visual appearance of the storm at the time of the RHI scan is shown as an inset.

Photo credit: Patrick Kennedy
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