I put together a 12h KBUF radar loop of the MCV that developed over Lake Erie this morning.

Watch how the low-level vortex came together as smaller convective elements merged & grew upscale. There was baroclinic support, but the lake likely played a factor in this evolution. pic.twitter.com/0UkM3LcHFe

— Philippe Papin (@pppapin) July 11, 2020