A LP supercell produced a tornado in Calhoun County, IA, on the radar scan shown in a very low Z region with little rotation evident on velocity. TORP got as high as 43% but did not have a notable quick increase as recent tornadic storms did. AzShear increased but with a quick, minimal jump. This is a tough case and, considering that the TORP ingests radar data, without a defined signature on radar it will be tough for TORP to detect anything either. -newt