Grabs the NOAA alerts/warnings/watches/hazards shapefile and converts it to a small-(ish) GeoJSON every hour.
https://hrbrmstr.github.io/noaa-alerts-sp-to-geojson/current-all.geojson
The original process saved git history for each new conversion. That's not necessary since NOAA maintains the history for the alerts. Rather than waste storage, the repo is pruned as each new GeoJSON is converted.