This map displays NWS Tornado Warning alerts from April 2026, across the United States. Each
polygon represents a warned area, shape-encoded by severity.
Using real-time NWS alert data as a case study, this tool explores how we can better communicate tornado
risk, especially for underserved, rural, or visually impaired users.
About This Page
This map was designed to improve accessibility, clarity, and
usability during tornado events.
Features
Shape-encoded severity: Each marker shape communicates alert tier
Layer toggles: Show/hide warning polygons and centroid markers
POI search: Enter addresses to see proximity to warnings