This is a great project and I think I and others will find it useful. Now I’ve got some more things to look into.
Home automation for stuff like lights is generally convenient but I think automating emergency related stuff is the most important aspect of any automation system. I wrote up a NWS severe weather alert project a while back for the same reason. I finally got around to adding smart smoke detectors (first alert brand) and I think I needed something like this. Right now it’s just a simple pushbullet notification.
And a great write-up too. It looks like you get as “wordy” as I do on this kind of thing. 
(see my previously mentioned NWS alerts or even better my time conversion thread for examples). But in cases like this it’s better to possibly over-explain things than to not explain things enough.
Thanks for the contribution!