Tomé fire, March 2023 Coelemu, Tomé
The fire started on 26 March 2023 in Tomé, Chile, and satellites saw it burning for 1 day. Copernicus’s global GWIS system rebuilt a burnt perimeter of 1,231 hectares from heat detections, spread across 2 municipalities.
It is the 57th largest in Región del Bío-Bío since 2016 (of 74 with a page). Number 62 in Chile in 2023, of 70.
- Burnt area
- 1,231ha
- GWIS perimeter (Copernicus)
- Duration
- 1day
- 26 Mar 2023 – 26 Mar 2023
- Municipalities hit
- 2
- communes
- Started on
- 26 Mar
- 2023
- Heat detections
- 37
- in a single hotspot: 43 MW
- Danger at start
- 24
- High · FWI index
- Energy released
- 569MW
- sum of detected power
Where it burned
How it evolved, day by day
Fire radiative power detected each day, in megawatts, and number of hotspots. The magenta bar marks the peak day.
The weather it burned in
It had gone 17 days without rain (1 mm or more) when it started.
This area had burned before
No earlier perimeters overlap this fire since 2016, when the satellite record begins.
What happened to each town
-
828 ha reached on 26 Mar2.4 %
-
Tomé where it started403 ha reached on 26 Mar0.8 %
Burnt area inside each municipality, from crossing the GWIS perimeter with administrative boundaries. The distance is from the town centre to the nearest fire: staying a kilometre away does not mean it reached the houses.
The weather day by day
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) · Copernicus Climate Change Service (ERA5)
| Day | High | Min. humidity | Peak gust | Rain | Danger (FWI) |
|---|---|---|---|---|---|
| 26 Mar | 22.7 °C | 37 % | 27 km/h | 0.0 mm | High 24 |
| 27 Mar after | 18.2 °C | 55 % | 37 km/h | 0.0 mm | Moderate 20 |
| 28 Mar after | 15.7 °C | 68 % | 37 km/h | 0.5 mm | Moderate 15 |
| 29 Mar after | 17.8 °C | 38 % | 38 km/h | 0.0 mm | Moderate 20 |
| 30 Mar after | 19.1 °C | 28 % | 40 km/h | 0.0 mm | High 24 |
| 31 Mar after | 23.2 °C | 23 % | 29 km/h | 0.0 mm | High 27 |
| 1 Apr after | 24.3 °C | 28 % | 37 km/h | 0.0 mm | High 30 |
| 2 Apr after | 19.4 °C | 49 % | 29 km/h | 0.0 mm | High 22 |
| 3 Apr after | 22.2 °C | 32 % | 35 km/h | 0.0 mm | High 24 |
| 4 Apr after | 22.2 °C | 31 % | 27 km/h | 0.0 mm | High 24 |
| 5 Apr after | 18.4 °C | 48 % | 30 km/h | 0.0 mm | Moderate 21 |
Before and after, from space
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.
The smoke
CAMS · CopernicusOn 26 March 2023 the air beside the fire reached 572 µg/m³ of PM2.5. That day averaged 162: 11 times the WHO daily 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)
Detections table · 37Every satellite heat detection, one by one, with time, satellite, power and coordinates.
| Date and time | Satellite | FRP (MW) | Lat | Lon |
|---|
Other fires nearby
- 7,646 haCoelemuFebruary 2023 · 5 days · 16 km away
- 39,139 haToméFebruary 2023 · 18 days · 20 km away
- 10,978 haQuirihueFebruary 2023 · 8 days · 31 km away
- 27,577 haConcepciónJanuary 2026 · 9 days · 38 km away
- 81,000 haFloridaJanuary 2017 · 14 days · 39 km away
- 11,688 haQuirihue26 January 2017 · 6 days · 40 km away
Frequently asked questions
- How long did the Tomé fire last?
- GWIS (Copernicus) dates it between 26 March 2023 and 26 March 2023: 1 day between the first and last heat detection of the perimeter.
- How much area did it burn?
- The perimeter GWIS (Copernicus) rebuilt from heat detections is 1,231 hectares (12.3 km²). It is an estimate: official national figures may differ.
- Which municipalities burned?
- The fire entered 2 municipalities: Coelemu (828 ha, 2.4 %); Tomé (403 ha, 0.8 %).
- What was the weather like?
- During the fire the temperature reached 22.7 °C, humidity dropped to 37 % and gusts hit 27 km/h. The fire danger index (FWI) reached 24, class High.
- Where does this data come from?
- From the GWIS (Copernicus) burnt perimeter, NASA FIRMS VIIRS hotspots and the administrative boundaries of Chile (geoBoundaries). It is not an official report.
Where to verify it
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: 130 (CONAF) · 132
Satellite cross-check
Does something look wrong on this page?
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.
Report an error
Where this data comes from
The perimeter comes from the Copernicus Global Wildfire Information System (GWIS), which rebuilds it from MODIS and VIIRS heat detections and publishes it under CC BY 4.0. It is not measured on imagery as in Europe, so it is an estimate. Heat detections come from the VIIRS sensors aboard Suomi-NPP and NOAA-20, distributed by NASA FIRMS at 375 m resolution. Municipal boundaries come from geoBoundaries ADM3 (Creative Commons Attribution 3.0 Intergovernmental Organisations (CC BY 3.0 IGO)). The area per municipality is computed by WorldFires by crossing the perimeter with those boundaries, so it may differ from each country’s official figure.