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National Weather Service Radar to Receive an Upgrade
August 17, 2012 The National Weather Service Doppler Radar serving southeast Wyoming and western Nebraska will be enhanced with the latest dual-polarization technology beginning in October. John Griffith, Warning Coordination Meteorologist with the National Weather Service in Cheyenne, says conventional Doppler radars send out a horizontal pulse that gives forecasters a one‐dimensional picture of whatever is in the air, precipitation or non‐precipitation. It can see precipitation, but can’t tell the difference between rain, snow, or hail. Dual‐polarization radar sends and receives both horizontal and vertical pulses, providing a much more informative two‐dimensional picture of whatever is out there.