Dec of 92 was like that here…tons of precipitation, with heavy heavy rain, that transitioned to frozen precip almost 18-24 gets after it started, and snowed the whole next day.
Now Before anybody says I’m saying this is Dec of 92, I’m certainly not. Just comparing the amount of precip that looks to “possibly” be associated with this thing, and seeing some other possibilities that “could” be on the table, that somewhat reminds me of that Dec 92 idea.