OP here - I did some pretty heavy research on this topic to make sure I'd be okay publishing this / automating anything at all. From what I looked into (and mind you, I'm a 23 year old security researcher & not a lawyer) there are a few recent landmark court cases (Van Buren vs. United States, hiQ Labs vs. LinkedIn) that protect webscraping of a public-facing page without bypass of any technological barriers. Furthermore, Florida has the Computer Abuse and Data Recovery Act that defines any malicious behavior as overuse of resources or an intent to defraud or cause harm, both of which I was very conscious about not violating. I appreciate the concern regardless!
After receiving the C&D, the method with which I was getting the data was removed/patched (which I'm now noticing was not mentioned in the blog post...) I did ask them if there was any thing I could to keep it up and never received a response, and rather than playing a cat & mouse game of "now you don't have our branding, but you are scraping are data so here's another C&D" I just took it down :)
Author here - I absolutely do have more to learn about trademarks and appreciate everyones comments :) I was attempting to go for a good faith representation but (obviously) now know that wasn't the best way to go about it.
As far as rigorous research, I looked semi-heavily and couldn't find anything in relation to it. I'm sure it's not a foreign concept to use local area data in this way for disaster planning though!