WSR-88D

Doppler Radar allows forecasters to “see inside” a thunderstorm and detect conditions that precede the development of a tornado or indicate a high probability of damaging thunderstorm “straight-line” winds and large hail. Doppler Radar computer algorithms provide continuously updated estimates of rainfall within 125 miles of the radar site. These “real-time” rainfall estimates, when combined with information on soil wetness and runoff potential, give meteorologists valuable information concerning flash flood potential. WSR-88D Doppler radar tower and antenna. (NOAA/NWS)