Casebook 29 July 2003
CSU-CHILL Casebook: 29 July, 2003
Scattered thunderstorms were present in the greater Denver area during the afternoon hours of 29 July 2003. In the southeast azimuth quadrant of the CSU-CHILL radar, the nearest thunderstorm activity was located beyond the radar's unambiguous ("first trip") range of ~150 km. The range-aliased ("second trip") presentation of these distant storms appeared as radially-elongated echoes centered ~ 60 km southeast of CHILL. (See VCHILL link below.) In addition to their narrow shapes, the range-aliased echoes have velocity and differential propagation phase () characteristics that are quite different from the neighboring first-trip echoes. Also, the second trip echoes quickly disappear with increasing elevation angle as the antenna's main beam overshoots the tops of the distant storms.
