An interesting end to the contest awaits. If DCA gets to freezing tomorrow morning, @RIC Airport will win. @yoda will win if DCA waits to Saturday, while @mappy will win if it's next Wednesday. I tested those dates based on today's 12z GFS, but a lot of variance here with a big swing in results. Actually, our group MEAN forecast will actually win for the later 2 dates (Saturday and next Wednesday and probably most dates in between).