That couple of bins looks like bad data to me the way it pops in real quick on one volume scan and then is gone, but there has been broad/weak rotation in that cell (and now the one just east).
I am intrigued by how the reports came in as the cell clearly became the tallest thing around (even though it's only 10,000 ft or so). Updraft surges like that can be enough. I actually like the velocity more around 11:15-11:25.