A storm swath is the geographic boundary of a hail or wind event — the polygon-shaped area on a map where damaging weather actually occurred. Every property inside the storm swath polygon is a potential customer for roofing, restoration, public adjusting, and related services. The swath boundary is the foundation of automated storm lead generation because it allows property databases to be queried by geographic location: give me every property inside this polygon.
How Swath Polygons Are Created
HailTrace creates storm swath polygons by combining Doppler radar data, meteorologist-verified hail size reports from weather spotters, and high-resolution dual-polarization radar analysis. The result is a GeoJSON polygon that accurately represents the geographic area that experienced damaging weather. Unlike a simple radius circle around a single storm report point, a swath polygon follows the actual storm track and reflects the varying intensity across the affected area — with inner polygons representing the most severe zones.
How the Polygon Connects to Property Data
The ATTOM Data API accepts a GeoJSON polygon as a query parameter and returns all properties inside that polygon with owner names, addresses, property values, and construction data. This connection — storm swath polygon → ATTOM property query → property owner list — is the core technical workflow of automated storm lead generation. A single API call returns hundreds or thousands of property records inside the exact storm footprint, ready for skip tracing and outreach. The full workflow from swath polygon to voicemail drop is demonstrated at omnionlinestrategies.com/storm-lead-ai-machine.