Curious, what API are you getting your weather data from? Most of your negative reviews on Nice Weather 2 suggest the weather data is inaccurate.

This shit keeps me awake at night, too.

I usually write in a few lines of code that wipe the database in the (extremely unlikely, but hey) event that migrations fail - means the user has to log in again, but at least the app doesn't crash (or worse, work itself into a completely unusable state)

I am glad you figured it out. Nice Wheater is by far my favorite app.

No specific feedback on the story (although it's a good lesson to iOS devs, I'm sure) but thought I'd say that this was a really well written, entertaining and informative post. Thanks for sharing.