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Radial VelocityComponent of motion toward or away from a given location. As "seen" by Doppler
radar, it is the component of motion parallel to the radar beam. (The component of motion perpendicular to
the beam cannot be seen by the radar. Therefore, strong winds blowing strictly from left to right or from right
to left, relative to the radar, can not be detected.)Storm Relative Mean Radial Velocity Map(SRM): This WSR-88D radar product depicts a full 360ยบ sweep of radial velocity data with the average motion of all identified storms subtracted out. It is available for every elevation angle sampled. It is used to aid in displaying shear and rotation in storms and storm top divergence that might otherwise be obscured by the storm's motion, investigate the 3-D velocity structure of a storm, and help with determining rotational features in fast and uniform moving storms. Storm Relative Mean Radial Velocity Regi(SRR): This WSR-88D radar product depicts a 27
nm by 27 nm region of storm relative mean radial velocity centered on a point which the operator
can specify anywhere within a 124 nm radius of the radar. The storm motion subtracted defaults to
the motion of the storm closest to the product center, or can be input by the operator. It is used to
examine the 3-dimensional storm relative flow of a specific thunderstorm (radar operator centers
product on a specific thunderstorm; aid in displaying shear and rotation in thunderstorms and
storm top divergence that might otherwise be obscured by storm motion; and gain higher
resolution velocity product
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