FIRMS
4 articlesWas There a Fire, and When? Confirming and Dating a Reported Fire with Satellite Data
How to use NASA FIRMS fire detections and Sentinel-2 burn scars together to confirm that a reported fire or explosion happened, and to narrow down when, with the limits of each source.
2026-10-04 · 7 min read
How to Verify a Reported Event with Free Satellite Imagery: An OSINT Workflow
A step-by-step OSINT workflow for checking a reported fire, strike, flood or build-up against free Sentinel-1, Sentinel-2 and NASA FIRMS data, and for writing down what the imagery can and cannot support.
2026-10-04 · 11 min read
A Field Guide to Free Satellite Data Sources: Sentinel-1, Sentinel-2, VIIRS, and NASA FIRMS
Four open satellite data sources cover most monitoring needs — but each one sees the world differently. This guide explains what Sentinel-1 SAR, Sentinel-2 optical, VIIRS nighttime lights, and NASA FIRMS active fire each measure, and how to pick the right one.
2026-06-19 · 5 min read
NASA FIRMS Explained: VIIRS vs MODIS, FRP & Confidence
How NASA FIRMS detects active fires: VIIRS 375 m vs MODIS 1 km, fire radiative power (FRP), confidence levels and what each detection record contains.
2026-02-10 · 7 min read