Notes from building and running a weather alerting platform: warning geometry, NWS data feeds, and the operational details that decide whether an alert reaches the right people.https://www.shearwx.com/en-ushttps://www.shearwx.com/notes/why-your-county-gets-warned/https://www.shearwx.com/notes/why-your-county-gets-warned/Storm based warnings are polygons, not counties. Here is why alerting systems still warn whole counties, why the obvious fix overcorrects, and what actually works.Wed, 16 Sep 2026 00:00:00 GMT