@dasbooter and @finity
NOAA also puts out Common Alerting Protocol notices, which is what you might be noticing. I authored a little python library to convert all the CAP versions to standard Python objects.
I’m currently scraping a number of these alerts (NOAA, RFS, CA, Taiwan, and a few other places) and storing them in a PostGIS database. If you see some value in integrating it with HASS, then please let me know and I’d be happy to flush out some details.