Recorded by satellite 102 days ago.
A thermal anomaly is a snapshot of one satellite pass, not a record of a fire’s life: we cannot say whether it kept burning after that pass.
It is the 10th strongest of the 70 detections recorded within 20 km of this point since 9 May 2026. The last comparable one was on 18 May 2026. 17 more were recorded here in the fortnight before it.
What the source measured
NASA FIRMS (VIIRS) reported 53 fire pixels with a combined fire radiative power of 480 MW, at nominal confidence, 39 km from Antsalova.
The 53 pixels cover about 7.4 km² — that is the footprint of the detection grid at 375 m resolution, not an estimate of how much land burned.
FIRMS does not report burned area, and neither do we.
An estimated 12,531 people live within 50 km of this point.
Nearby, since 9 May 2026
- June 14, 2026 · score 62 · 0.8 km
- May 21, 2026 · score 47 · 9.6 km
- July 9, 2026 · score 72 · 11.6 km
How we know
One source: NASA FIRMS (VIIRS). Not yet confirmed by a second, independent source.
Our own score for this event is 58 out of 100, at 84 % confidence.
The score is ours, computed from intensity, exposed population and local history — not the source’s.
Event Data
| Type | Wildfire |
| Severity | critical |
| Calamity Score (ours) | 58 / 100 |
| Our confidence | 84% |
| Coordinates | -18.4447, 44.9066 |
| Nearest City | Antsalova (39 km) |
| Population Exposed | 12.5K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-05-20T10:30:00.000Z |
Score Breakdown
Technical Details
| Brightness | 352.87 |
| Frp | 479.62 |
| PixelCount | 53 |
| Confidence | nominal |
Cascade Risks
Safety Information
If a wildfire is approaching: follow evacuation orders immediately. Do not wait to see the fire. Close all windows and doors, remove combustible materials from around your home, and have an emergency go-bag ready. Air quality can deteriorate rapidly even at distance from the fire front — monitor local air quality advisories.
Series begins 10 February 2026. Comparisons refer to that period only. Collection gap: 14-26 August 2026.
This data is aggregated algorithmically from scientific sources. Not a replacement for official emergency warnings.
Calamity.live data shows a fire event with CalamityScore 58/100, near Antsalova (Madagascar), based on data from firms. Source: Calamity.live, a platform aggregating real-time data from 194 scientific monitoring sources.