Understanding The News On 6 Weather Radars

Like your new radar, can set here at the prison and check everywhere. keep up the good work.

-Saturday night's outbreak may present an opportunity to produce some of those radar pictures as illustrations. The most prominent (and best-explained) feature that evening was the "inflow notch", but I saw a lot of other features that bear illustrating. You may have some fascinated Web site viewers with a series of such illustrations.
I have two questions right here; what does the tiny white square with its long arrow indicate, and what have you seen in the radar return that establishes that indicator? This question relates to my Ground Observer Corps days, when certain observations as plotted had to match with certain other observations, to establish a track.
I hope this helps.-
Best regards,
SAMUEL O. LINDEMAN