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Green Line Separater

WSR-88D Four-Panel Base Reflectivity Image Reflectivity data can be viewed in a four-panel layout in order to assess four different radar elevation angles (i.e., four separate levels in the atmosphere) at the same time. A four-panel display especially is useful to help assess the vertical structure of thunderstorms. In the accompanying figure, the upper-left (lower-right) panel shows data at the lowest (highest) altitude. Forecasters look for various signatures in reflectivity four-panels, including the vertical orientation and depth of high reflectivity cores (the orange and red colors) and storm tilt with height. This assists in the warning decision making process. The image at left shows a classic supercell just east of Bowling Green, Kentucky on April 16, 1998.  A hook echo is present in eastern Warren county while a bounded weak echo region (BWER; small area of lower reflectivity values coincident with the rotating updraft) exists in west-central Barren county. The storm produced large hail and tornadoes as it moved east across south-central Kentucky.  Additional images from this case are available in the NWS Louisville WSR-88D images section.

Green Line Separater

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