From the synoptics and radar at the time of the even it appears to be a multicell spawned tornado, however the evidence is not conclusive that a supercell wasnt embedded within the cold front. Was definitely not a gustnado though, it was far too strong, and did not occur on the frontal boundary according to witnesses(they heard wind/rain before the event). So either a Multicell spawned cold core, or a supercelluar as part of the frontal system.