Well since my friend flew in from Ireland just to do this ride, we're really hoping that somehow the weather won't be too bad. We've agreed we don't mind riding in regular rain but heavy rain + wind is right out. So we will decide at the last minute what we're doing.
We were planning to do the metric. This morning on the news they were saying that the heaviest rain should be east of us, and based on the weather maps it looks like the storm will still be south of us early Saturday morning so maybe the worst won't hit until sometime in the afternoon. If that's the case, I'm hoping we might be able to at least do the 50-miler before conditions get too bad.
If we decide not to chance it, we're considering the Indian Head metric on Sunday as a backup (and hoping they don't have too much storm damage to clean up in that area).