Clearly, a replacement for the French Toast Alert System is needed this week

But what's the proper metaphor?

In honor of Passover, I was thinking a system from one piece of dry matzoh straight from the box for sunny, dry days, all the way up to a giant, soggy matzoh ball for a day like today, but who rushes out to buy matzoh meal just because it's raining? Boots, maybe? Sump pumps? Other ideas?