I have heard it said, since at least 1993, that if it thunders in the winter that it means snow is coming ten days later.
The first time I was told that, it was by Dad in February of that year. Exactly ten days later we had "the Storm of the Century" blizzard.
And every time since then that it has thundered during winter, we have had snow: if not precisely ten days later then very closely thenabouts.
Well, we had thunder this morning here in Reidsville, North Carolina. A lot of thunder.
So with this post as a benchmark, I'll check back in ten days from now Lord willing, and we'll see if there's any wintery preciptation :-)