Figure 20. (A) STP after passage of first MCS ending at 2213 UTC 6 April 2003 from the Brandon, MS WSR-88D (KDGX). (B)  STP after passage of second MCS ending at 1044 UTC 7 April 2003. A comparison to gauge rainfall totals indicates that the radar was underestimating rainfall by up to two inches. The outlined area represents rainfall that was produced by an isolated supercell. is the U.S. government's official web portal to all federal, state and local government web resources and services.