And 40 to 45 days is a ton of time in a fluid situation. If the state of Iowa makes the same progress in the next 45 days it has in the previous it will be hard to justify shutting things down at that point. My point remains, this is not a decision that needs or should be made now. The AD has taken measures to prepare and they are in a good spot to wait and see.
There's no "decision." It's a non-enforceable recommendation. This isn't that difficult.