Satellites first detected fire on 3 November 2026 in St. Mary, United States. It has been active for 6 days, with 38 heat detections and an area with fire of about 490 hectares rebuilt from them, spread across 2 counties.
Suggestions: Cottonmouth · 2016Cameron · 2019
Estimated from hotspots: no perimeter has been published yet.
This is an estimate from the VIIRS pixels that saw fire. It will change when the perimeter is published.
From 3 Nov 2026 to today: still being detected.
Satellites pass a few times a day and cloud or smoke can hide the fire: a lack of detections is not an official extinction. Each country’s emergency service declares a fire contained or out.
First day with fire seen by the satellites or the perimeter.
No official record is matched to this page, so the alert time and the cause are not known here.
VIIRS detections at 375 m. Most intense hotspot: 63 MW.
There is no official record to compare with. Each hotspot is a pixel detected in one satellite pass, not a separate fire.
Total radiative power on 5 November 2026; hotspots that day: 14.
Fire radiative power (FRP) measures the energy the fire gives off when the satellite passes. Added up by day, it compares intensity, not area.
Fire Weather Index (Canadian system) computed by WorldFires for the day the fire started. Consecutive days without rain before: 0.
This is an index computed from weather model data, not a measurement of the fire nor an official warning. Danger warnings are issued by each country’s authority. Emergency number and official warnings
High of 28.4 °C and minimum humidity of 62% on 3 November 2026; gusts of 33 km/h on 3 November 2026.
These are model values for a cell of about 25 km, not from a weather station: they may differ from what was measured on the ground.
This page’s change log has been kept since 24 October 2026: every night what it publishes is compared and the difference is logged. Anything earlier is reconstructed from each source’s date and marked as reconstructed.
Move the slider to see which area the page published each day.
A version keeps the area, dates, name and official record; the area as it was logged (changes under 2% are not logged). The map, hotspots and weather always show today’s data.
| fecha | focos_viirs | frp_mw | tmax_c | tmin_c | hr_min_pct | viento_max_kmh | racha_max_kmh | precip_mm | fwi | clase_fwi | dentro_del_incendio |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 2026-11-03 | 0 | 0 | 28.4 | 21.4 | 62 | 15.6 | 33.1 | 1.7 | 4.6 | muy_bajo | 1 |
| 2026-11-04 | 8 | 248 | 26.4 | 17.9 | 53 | 11.4 | 26.3 | 1.1 | 2.6 | muy_bajo | 1 |
| 2026-11-05 | 14 | 352 | 26.3 | 14.7 | 46 | 7.6 | 18 | 0 | 6.2 | bajo | 1 |
| 2026-11-06 | 5 | 139 | 26.6 | 15.2 | 37 | 9.4 | 26.6 | 0 | 13.1 | moderado | 1 |
| 2026-11-07 | 8 | 142 | 25 | 14.1 | 46 | 13.3 | 29.5 | 0 | 14.4 | moderado | 1 |
| 2026-11-08 | 1 | 3 | 21.3 | 11.1 | 38 | 12.7 | 26.6 | 0 | 13.8 | moderado | 1 |
It is generated in your browser from this page’s data: one file per fire, aggregated by day and without individual hotspots.
It updates itself while the fire is still active and links to this page. Free, with the attribution shown at the bottom.
Sources for this page: NASA FIRMS (VIIRS), ECMWF IFS · Open-Meteo.com (CC BY 4.0). Open-Meteo.com · How we build fire pages: methodology
NIFC has not yet published the perimeter of this fire. For now the area is the one rebuilt from heat detections (about 14 hectares per pixel). When the perimeter arrives, this page picks it up on its own and keeps the same address.
No detections since 8 Nov 2026, 18:49 UTC. That usually means no flame is visible from space any more, although hotspots may remain. Satellites pass a few times a day and cloud or smoke can hide the fire: a lack of detections is not an official extinction. Each country’s emergency service declares a fire contained or out.
The wind is blowing from the north-east and pushing to the south-west; no sharp shifts are expected until Thu 12, 11:00.
ECMWF IFS 0.25° at the centre of the fire · computed 9 Nov 2026, 14:57 UTC
Wed 11, 00:00, local time
Chance of rain up to 38 % in those hours. It can slow the fire at the surface, but that does not mean it will go out.
Checked, no warning: no wind shifts of more than 60° nights recover humidity (peaks of 87 % or more)
geoBoundaries/United States Census Bureau, MAF/TIGER Database (Public Domain)
Is it heading my way?
We compare your point with the fan for each hour. Your location never leaves your device.
or tap the mapThis is not an official warning. It is a global model forecast with cells of about 25 km, at the centre of the fire: it cannot see valley winds or the winds the fire itself creates. The fan shows where the wind blows, not where the fire will spread. If in doubt, follow what the authorities say.
Emergencies · United States 911 Emergency number and official warningsForecast: ECMWF IFS 0.25° (European Centre for Medium-Range Weather Forecasts), served by our own Open-Meteo instance; the chance of rain comes from the ECMWF ensemble. Variables: wind and gusts at 10 m, wind at 850 hPa, relative humidity and temperature at 2 m, rain. Open-Meteo.com (CC BY 4.0).
Fire: VIIRS (NASA FIRMS); hotspots from the last 24 h: VIIRS from NASA FIRMS. Boundaries: geoBoundaries/United States Census Bureau, MAF/TIGER Database (Public Domain).
How it is worked out: wind shift = a change of more than 60° in 6 h or less, with at least 15 km/h before and after; no overnight recovery = peak humidity between 8 pm and 8 am stays below 55 %; useful rain = 2 mm or more in 6 h. The fan opens 18° plus however much the wind varies within ±3 h and reaches 25 km beyond the edge of the fire: one model cell, not a rate of spread. Methodology
Fire radiative power detected each day, in megawatts, and number of hotspots. The magenta bar marks the peak day.
It had gone 0 days without rain (1 mm or more) when it started.
Area with fire inside each county, rebuilt from heat detections (about 14 hectares per VIIRS pixel). An estimate until NIFC publishes the official perimeter. The distance runs from the point marking the centre of each area to the nearest fire: staying a kilometre away does not mean it reached the houses.
ECMWF ERA5 reanalysis at the fire location, the standard reference for past weather, and the Canadian Fire Weather Index (the same system Copernicus uses), computed by WorldFires from that data. Days after the fire run until the first rain.
Open-Meteo.com (CC BY 4.0) · forecast models, provisional until the ERA5 reanalysis arrives
| Day | High | Min. humidity | Peak gust | Rain | Danger (FWI) |
|---|---|---|---|---|---|
| 3 Nov | 28.4 °C | 62 % | 33 km/h | 1.7 mm | Very low 5 |
| 4 Nov | 26.4 °C | 53 % | 26 km/h | 1.1 mm | Very low 3 |
| 5 Nov | 26.3 °C | 46 % | 18 km/h | 0.0 mm | Low 6 |
| 6 Nov | 26.6 °C | 37 % | 27 km/h | 0.0 mm | Moderate 13 |
| 7 Nov | 25.0 °C | 46 % | 30 km/h | 0.0 mm | Moderate 14 |
| 8 Nov | 21.3 °C | 38 % | 27 km/h | 0.0 mm | Moderate 14 |
It started with an FWI of 4.6, a minimum humidity of 62% and rain the day before. Fires in the area that started in weather like this since 2016: 13.
First rain (1 mm or more) after it ended: 7.3 mm on 29 Jun.
First rain (1 mm or more) after it ended: 2.0 mm on 25 Jan.
First rain (1 mm or more) after it ended: 7.4 mm on 29 Dec.
First rain (1 mm or more) after it ended: 7.4 mm on 29 Dec.
First rain (1 mm or more) after it ended: 1.3 mm on 12 Aug.
Fires in the area that started in similar weather: 13. With fewer than 15 we give no figures: they would be more noise than signal.
This is a bank of analogues: it shows what usually happens, not what will happen. With fewer than 15 twins we give no figures. How we calculate it
Drag the line to compare the same ground before the fire and after it.
If the day is cloudy, change the date: each satellite passes once a day. In false colour the burnt ground looks brown or red.
On 18 October 2026 the air beside the fire reached 19 µg/m³ of PM2.5, but no daily average passed the WHO guideline (15).
Particles from the Copernicus CAMS model at the centre of the perimeter; these are not measurements in each town. The pale bar is the worst hour, the solid one the daily average.
Open-Meteo.com (CC BY 4.0) · Copernicus Atmosphere Monitoring Service (CAMS)
| Date and time | Satellite | FRP (MW) | Lat | Lon |
|---|
A satellite detection is not an official report. Final figures and the fire’s status are published by each country’s emergency service.
Emergency number: 911 · Emergency number and official warnings
Satellite cross-check
RSS Changes to this page With cross-checks and a citable version
This page is built from satellite data and official records, and it sometimes gets things wrong: the wrong dates, the wrong town, two fires merged into one, or something that was not a wildfire at all. If you know this fire first-hand (you live nearby, saw it, fought it or reported on it), tell us what really happened and we will check it.
The perimeter is official and in the public domain. For past years it comes from MTBS (Monitoring Trends in Burn Severity), run by the U.S. Geological Survey and the USDA Forest Service, which map it on Landsat and Sentinel-2 imagery. For the current and last year it comes from WFIGS at the National Interagency Fire Center (NIFC): incident perimeters mapped by fire crews, aircraft and imagery. Heat detections come from the VIIRS sensors aboard Suomi-NPP and NOAA-20, distributed by NASA FIRMS at 375 m resolution. County boundaries come from geoBoundaries ADM2 (Public Domain). The area per county is computed by WorldFires by crossing the perimeter with those boundaries, so it may differ slightly from official figures.