Everyone referred you to the city's home page. The site buckled under the load, and was completely unresponsive for hours. If it was a more urgent emergency, the lack of information could have led to people being harmed.
I was hoping they would switch to a less dynamic site for alert pages, perhaps use a CDN or edge proxy like cloudflare, etc. But no, it appears demand just died off, and they are still doing the same thing. They just put out info on where you can go to national guard filling stations to fill up water bottles, and their home made .net based website is back to taking 10 seconds to render the home page.