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Base reflectivity data is one of the basic products
available on the WSR-88D. Reflectivity shows where and how hard
it is raining or snowing, as well as precipitation intensity
trends and movement. Blue and green colors represent light-to-moderate
rainfall. Yellow and orange colors show moderate-to-heavy precipitation,
while red is very heavy rainfall and possibly hail. At left is a close-in
view of a severe thunderstorm over Mercer County in east-central
Kentucky (west of Lexington) on May 11, 2003. Although not classic in
appearance, this is a supercell thunderstorm with a
hook echo on the southwest side of the storm. This storm produced a tornado
over central Mercer County that produced F1-F2 damage. More information and
radar images on this May 11, 2003 severe
event are available. |
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