Ledesma fire, December 2022 Ledesma
The fire started on 5 December 2022 in Ledesma, Argentina, and satellites saw it burning for 3 days. Copernicus’s global GWIS system rebuilt a burnt perimeter of 2,146 hectares from heat detections, spread across a single municipality.
It is the 12th largest in Jujuy since 2016 (of 21 with a page). Number 253 in Argentina in 2022, of 442.
- Burnt area
- 2,146ha
- GWIS perimeter (Copernicus)
- Duration
- 3days
- 5 Dec 2022 – 7 Dec 2022
- Municipalities hit
- 1
- departments
- Started on
- 5 Dec
- 2022
- Heat detections
- 134
- in a single hotspot: 190 MW
- Danger at start
- 27
- High · FWI index
- Energy released
- 4.6GW
- 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 2 days without rain (1 mm or more) when it started. Rain came after the fire: 28.2 mm on 10 Dec.
This area had burned before
90% of the perimeter overlaps earlier fires recorded since 2016: 2,837 ha in 2020. Part of it burned more than once, so the yearly figures add up to more than the 1,934 ha that had burned before.
What happened to each town
-
Ledesma where it started2,154 ha reached on 4 Dec0.7 %
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) |
|---|---|---|---|---|---|
| 5 Dec | 39.2 °C | 14 % | 26 km/h | 0.0 mm | High 27 |
| 6 Dec | 42.2 °C | 12 % | 31 km/h | 0.0 mm | High 30 |
| 7 Dec | 43.5 °C | 12 % | 37 km/h | 0.0 mm | High 35 |
| 8 Dec after | 43.7 °C | 14 % | 29 km/h | 0.0 mm | High 34 |
| 9 Dec after | 42.1 °C | 21 % | 33 km/h | 0.0 mm | High 36 |
| 10 Dec after | 39.2 °C | 28 % | 43 km/h | 28.2 mm | Low 7 |
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 9 December 2022 the air beside the fire reached 191 µg/m³ of PM2.5. That day averaged 92: 6.2 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 · 134Every satellite heat detection, one by one, with time, satellite, power and coordinates.
| Date and time | Satellite | FRP (MW) | Lat | Lon |
|---|
Other fires nearby
- 4,556 haLedesma24 November 2022 · 7 days · 5 km away
- 8,998 haLedesmaSeptember 2022 · 14 days · 8 km away
- 6,282 haLedesma7 November 2022 · 14 days · 8 km away
- 16,641 haLedesma6 October 2020 · 18 days · 11 km away
- 11,632 haOrán6 October 2020 · 16 days · 19 km away
- 4,565 haSanta Bárbara2 November 2020 · 8 days · 29 km away
Frequently asked questions
- How long did the Ledesma fire last?
- GWIS (Copernicus) dates it between 5 December 2022 and 7 December 2022: 3 days 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 2,146 hectares (21.5 km²). It is an estimate: official national figures may differ.
- Which municipalities burned?
- The fire only entered Ledesma (2,154 ha, 0.7 %).
- What was the weather like?
- During the fire the temperature reached 43.5 °C, humidity dropped to 12 % and gusts hit 37 km/h. The fire danger index (FWI) reached 35, class High.
- Where does this data come from?
- From the GWIS (Copernicus) burnt perimeter, NASA FIRMS VIIRS hotspots and the administrative boundaries of Argentina (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: 911 · 100
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 ADM2 (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.