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Column Definitions for the FCAMMS Point Forecast Product

The national FCAMMS Point Forecast Product generates a Smoke Dispersion Forecast Guidance table that predicts conditions at your location affecting fire and smoke.

The table contains several columns to help you understand the information. 

PM2.5 ground concentrations: PM2.5 stands for particulate matter <= 2.5 microns. In practical terms, this is the fine-scale component of aerosol particulates, and ambient levels are regulated under the U.S. EPA National Ambient Air Quality Standards (NAAQS) (the current standard is a 24-hour average of < 35 ug/m^3). Wildland fire produces PM2.5 (along with larger sizes), and can contribute to NAAQS exceedances when smoke becomes heavy in an area.

Forecasts of PM2.5 must be taken in context as modeled PM2.5 levels are dependent on a chain of models (fire consumption, emissions, plume injection, and dispersion). Additionally, wildland fire smoke models often omit other (non-fire) sources than can raise the observed level in a region. Often it is best to view PM2.5 levels in context of previous forecast values.



In This Section

To view smoke dispersion information:


Field Descriptions

Glossary Resources

Spatial Data Reference

Landscape Data Source Reference

Relative Risk Reference

Organization Assessment Reference

Fire Behavior Reference

About the WFDSS Decision Editors