Hi,
Have you added a cache directory to your website list? There are 4 files from the NWS Alerts section that must go in there, and you need to set the folder permissions to 775.
Also, in your nws-alerts-config file, if you have 1 zone you are looking for, you may not need the comma (e.g. "Newton Falls|yourZone"). It's been a while since I set this up from scratch with 1 Zone.
John