Was that 2011? Now that I think about it, it was a dynamic storm with rain changing to snow. There must have been thunder because a bunch of us were online debating if we were getting hail or sleet.
Isn't this the old "convective feedback" issue, where the NAM would jump the low out by the thunderstorms and not along the baroclinic zone close to the coast? We're still several days out, so who knows? Maybe the NAM at range is right...for once.