ASA: Additional Grids: Slope

**As a** *recipient of a FBA, or* **I want** *to show the local fire environment context thats driving the advisory* **So That** *the information is practical and useable*
ASA: Additional Grids: Fuels, Elevation, Slope, Aspect

**Additional Context**
- Categorical: frequency by fuel type, frequency by aspect
- Elevation vector vs High HFI

**Acceptance Criteria**
- [ ] Grids accessible for the analysis, start with fuel layer, elevation, slope TBD, aspect later (new stories?)
- [ ] Use HFI threshold areas as a mask (polygon/raster/etc), extract out underlying values

TO DO: Pull out to other stories
- [ ] Zonal statistics off of underlying rasters
- [ ] Visualize/Textualize zonal statistics to make it useful
- [ ] Given (Context), When (action carried out), Then (expected outcome)
- [ ] Given (Context), When (action carried out), Then (expected outcome)
- [ ] Infographic?

**Definition of Done**
- Ready to Demo in Sprint Review
- Does what I have made have appropriate test coverage?
- Documentation and/or scientific documentation exists and can be found
- Peer Reviewed by 2 people on the team
- Manual testing of all PRs in Dev and Prod
- Merged

The issue names no files, tests, or entry points. Start by identifying the existing analysis-grid and HFI-threshold-mask workflows, then clarify which fuel, elevation, slope, and aspect work belongs in this story. Done should include accessible grids, masked underlying values, useful zonal statistics, tests, documentation, review, and a demo-ready merged change.

Written by the indexing model from the issue text.