Burned area
satellite only1,746ha
Perimeter published by GWIS (Copernicus).
- Source
- GWIS (Copernicus)
- Date
- 6 Jun 2021 – 17 Jun 2021
+− cross-check
No official record is matched to this page to compare it with.
MX · Mexico · –
Balleza fire, 6 June 2021 Balleza
Out · last detection 17 Jun 2021, 09:20 UTC
The fire started on 6 June 2021 in Balleza, Mexico, and satellites saw it burning for 12 days. Copernicus’s global GWIS system rebuilt a burnt perimeter of 1,746 hectares from heat detections, spread across a single municipality.
It is the 185th largest in Chihuahua since 2016 (of 229 with a page). Number 245 in Mexico in 2021, of 294.
Use this data
Compare with…
Use this data
Fire page data · version 2026-10-25matches the official recordwith caveatssatellite onlymodel
When copying, the sentence is
Tick the figures you want: they make up the lede and the CSV.
Duration by satellite
satellite only12days
6 Jun 2021 to 17 Jun 2021: first and last day with fire on the page.
- Source
- GWIS (Copernicus) · NASA FIRMS · VIIRS
- Date
- last detection: 17 Jun 2021, 09:20 UTC
+− cross-check
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.
Start
satellite only6 Jun 2021
First day with fire seen by the satellites or the perimeter.
- Source
- GWIS (Copernicus) · NASA FIRMS · VIIRS
- Date
- 6 Jun 2021
+− cross-check
No official record is matched to this page, so the alert time and the cause are not known here.
Hotspots
satellite only119
VIIRS detections at 375 m. Most intense hotspot: 84 MW.
- Source
- NASA FIRMS · VIIRS (Suomi NPP)
- Date
- 6 Jun 2021 – 17 Jun 2021
+− cross-check
There is no official record to compare with. Each hotspot is a pixel detected in one satellite pass, not a separate fire.
The worst day
satellite only1,002MW
Total radiative power on 12 June 2021; hotspots that day: 13.
- Source
- NASA FIRMS · VIIRS (FRP)
- Date
- 12 Jun 2021
+− cross-check
Fire radiative power (FRP) measures the energy the fire gives off when the satellite passes. Added up by day, it compares intensity, not area.
Danger at the start
model34.0FWI · high
Fire Weather Index (Canadian system) computed by WorldFires for the day the fire started. Consecutive days without rain before: 1.
- Source
- WorldFires calculation (Canadian FWI system)
- Date
- 6 Jun 2021, local noon
- Model
- ERA5 0,25° (ECMWF · Copernicus C3S) · Open-Meteo.com
+− cross-check
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
Weather during the fire
model31.0°C · 17% RH
High of 31.0 °C and minimum humidity of 17% on 11 June 2021; gusts of 60 km/h on 12 June 2021.
- Source
- weather model at the fire’s grid cell
- Date
- 6 Jun 2021 – 17 Jun 2021
- Model
- ERA5 0,25° (ECMWF · Copernicus C3S) · Open-Meteo.com
+− cross-check
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.
Living inside
model≈ 40people
Estimated residents inside the perimeter and 0.22 ha of built-up area (100 m grid, epoch 2020).
- Source
- GHSL R2023A · JRC
- Date
- calculated on 24 October 2026
+− cross-check
This is an estimate on 100 m cells, made from satellite imagery and census data: it does not mean that homes burned or that anyone was harmed. The perimeter also contains land that never burned.
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.
Show
-
· reconstructed weatherWeather and FWI computed from the ERA5 reanalysis
-
logStart date: 12 June 2021 → 6 June 2021.
-
· reconstructed GHSLPopulation and built-up area computed
What was saved on 25 October 2026
Every night a snapshot of what the page shows is saved. If anything changes, it appears in the list as a log entry.
- Area
- 1,746 ha
- Dates
- 6 Jun 2021 – 17 Jun 2021
- Name
- Balleza
- Official record
- —
Versioned permanent link
https://worldfires.org/en/fire/balleza-2021-06-3?v=2026-10-25A 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.
Citation
A lede of about 60 words figures only, no adjectives
CSV for this fire balleza-2021-06-3.csv · daily, no individual hotspots
| 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 2021-06-06 | 0 | 0 | 25.5 | 7.1 | 28 | 12.4 | 40 | 0 | 34 | alto | 1 |
| 2021-06-07 | 2 | 17 | 26.2 | 8.7 | 26 | 13.4 | 41 | 0.8 | 33.7 | alto | 1 |
| 2021-06-08 | 0 | 0 | 26.6 | 8.4 | 30 | 11.7 | 40.3 | 0.2 | 27.9 | alto | 1 |
| 2021-06-09 | 3 | 13 | 29.5 | 8.9 | 25 | 9 | 24.5 | 0 | 25.1 | alto | 1 |
| 2021-06-10 | 2 | 3 | 29.5 | 9.5 | 19 | 7.4 | 27 | 0 | 36.5 | alto | 1 |
| 2021-06-11 | 0 | 0 | 31 | 10.2 | 17 | 16.8 | 51.1 | 0 | 47 | muy_alto | 1 |
| 2021-06-12 | 13 | 1,002 | 28.2 | 11 | 17 | 21 | 60.1 | 0 | 60.5 | extremo | 1 |
| 2021-06-13 | 41 | 278 | 27.9 | 10.4 | 15 | 19.9 | 56.5 | 0 | 56.5 | extremo | 1 |
| 2021-06-14 | 37 | 417 | 27.5 | 9.4 | 15 | 18.5 | 54.4 | 0 | 57.9 | extremo | 1 |
| 2021-06-15 | 11 | 16 | 23.8 | 9.4 | 28 | 17.2 | 52.6 | 0 | 47.3 | muy_alto | 1 |
| 2021-06-16 | 7 | 21 | 26.7 | 9.5 | 23 | 16.9 | 49.7 | 0 | 48.6 | muy_alto | 1 |
| 2021-06-17 | 3 | 5 | 23.3 | 9.2 | 31 | 15.1 | 50.8 | 0.2 | 42.5 | muy_alto | 1 |
| 2021-06-18 | 0 | 0 | 24.8 | 9.1 | 24 | 13.7 | 45.4 | 0 | 40.8 | muy_alto | 0 |
| 2021-06-19 | 0 | 0 | 26.7 | 8.6 | 22 | 14.3 | 43.6 | 0 | 37.3 | alto | 0 |
| 2021-06-20 | 0 | 0 | 24.2 | 12.4 | 31 | 16 | 48.6 | 0.6 | 30.3 | alto | 0 |
| 2021-06-21 | 0 | 0 | 28.8 | 11.9 | 28 | 8.6 | 35.3 | 0.7 | 31 | alto | 0 |
| 2021-06-22 | 0 | 0 | 26.2 | 11.8 | 31 | 13.3 | 44.3 | 4 | 14 | moderado | 0 |
It is generated in your browser from this page’s data: one file per fire, aggregated by day and without individual hotspots.
Live widget for your story
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: GWIS (Copernicus), NASA FIRMS (VIIRS), ERA5 (ECMWF/Copernicus C3S) · Open-Meteo.com (CC BY 4.0), GHSL (JRC). Open-Meteo.com · How we build fire pages: methodology
- Burnt area
- 1,746ha
- GWIS perimeter (Copernicus)
- Duration
- 12days
- 6 Jun 2021 – 17 Jun 2021
- Municipalities hit
- 1
- municipalities
- Started on
- 6 Jun
- 2021
- Heat detections
- 119
- in a single hotspot: 84 MW
- Danger at start
- 34
- High · FWI index
- Average daily power
- 197MW
- detected power per day, on average
Where it burned
HOTSPOTS BY DAY
6 Jun17 Jun
17 Jun 2021
How it evolved, day by day
7 Jun
12 Jun
15 Jun
17 Jun
Fire radiative power detected each day, in megawatts, and number of hotspots. The magenta bar marks the peak day.
The weather it burned in
31°high
60km/h · peak gust
15%lowest humidity
It had gone one day without rain (1 mm or more) when it started. Rain came after the fire: 4.0 mm on 22 Jun.
This area had burned before
No earlier perimeters overlap this fire since 2016, when the satellite record begins.
How big is it?
London boundary: geoBoundaries · Office for National Statistics (Open Government Licence v3.0).
Paris boundary: geoBoundaries · Institut national de l'information géographique et forestière (IGN-F) (Etalab Open License 2.0).
Madrid boundary: geoBoundaries · Open Data ESRI, IGN Central Registry of Cartography Area (CC BY 4.0).
Berlin boundary: geoBoundaries · Federal Agency for Cartography and Geodesy (dl-de/by-2-0).
This compares size, not location: both shapes are at the same scale, north up, centred on each other.
What happened to each town
-
Balleza where it started1,749 ha reached on 7 Jun0.3 %
Burnt area inside each municipality, from crossing the GWIS perimeter with administrative boundaries. 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.
People and buildings inside the perimeter
GHSL 2020Built-up area0.22 ha
Residents≈ 40
Inside the perimeter there were about 0.22 hectares of built-up land and about 40 residents (GHSL 2020, satellite-based estimate).
This is an estimate on 100 m cells, made from satellite imagery and census data: it does not mean that homes burned or that anyone was harmed. The perimeter also contains land that never burned.
Source: Global Human Settlement Layer (GHS-BUILT-S and GHS-POP R2023A), European Commission Joint Research Centre (JRC), © European Union, CC BY 4.0. Sum inside the perimeter computed by WorldFires. human-settlement.emergency.copernicus.eu
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) |
|---|---|---|---|---|---|
| 6 Jun | 25.5 °C | 28 % | 40 km/h | 0.0 mm | High 34 |
| 7 Jun | 26.2 °C | 26 % | 41 km/h | 0.8 mm | High 34 |
| 8 Jun | 26.6 °C | 30 % | 40 km/h | 0.2 mm | High 28 |
| 9 Jun | 29.5 °C | 25 % | 24 km/h | 0.0 mm | High 25 |
| 10 Jun | 29.5 °C | 19 % | 27 km/h | 0.0 mm | High 36 |
| 11 Jun | 31.0 °C | 17 % | 51 km/h | 0.0 mm | Very high 47 |
| 12 Jun | 28.2 °C | 17 % | 60 km/h | 0.0 mm | Extreme 60 |
| 13 Jun | 27.9 °C | 15 % | 56 km/h | 0.0 mm | Extreme 56 |
| 14 Jun | 27.5 °C | 15 % | 54 km/h | 0.0 mm | Extreme 58 |
| 15 Jun | 23.8 °C | 28 % | 53 km/h | 0.0 mm | Very high 47 |
| 16 Jun | 26.7 °C | 23 % | 50 km/h | 0.0 mm | Very high 49 |
| 17 Jun | 23.3 °C | 31 % | 51 km/h | 0.2 mm | Very high 42 |
| 18 Jun after | 24.8 °C | 24 % | 45 km/h | 0.0 mm | Very high 41 |
| 19 Jun after | 26.7 °C | 22 % | 44 km/h | 0.0 mm | High 37 |
| 20 Jun after | 24.2 °C | 31 % | 49 km/h | 0.6 mm | High 30 |
| 21 Jun after | 28.8 °C | 28 % | 35 km/h | 0.7 mm | High 31 |
| 22 Jun after | 26.2 °C | 31 % | 44 km/h | 4.0 mm | Moderate 14 |
Its twins: fires that started in the same weather
It started with an FWI of 34.0, a minimum humidity of 28% and 1 day without rain. Fires in the area that started in weather like this since 2016: 15.
FWI at the start
34.0
Minimum humidity
28 %
Days without rain
1
this fire
chosen twins
rest of the area
Almost identicalSimilar
Outlines of the closest twins
This fire · Balleza fire, 6 June 2021
1,746 ha
12 days
FWI 34.0
Min. humidity 28 %
Guadalupe y Calvo fire, May 2018
11,608 ha
25 days
FWI 32.4
Min. humidity 27 %
78 km away, in 2018
First rain (1 mm or more) after it ended: 4.1 mm on 9 Jun.
Topia fire, May 2022
1,559 ha
9 days
FWI 33.2
Min. humidity 26 %
139 km away, in 2022
First rain (1 mm or more) after it ended: 3.7 mm on 28 May.
Badiraguato fire, May 2018
1,614 ha
13 days
FWI 38.0
Min. humidity 28 %
93 km away, in 2018
First rain (1 mm or more) after it ended: 1.1 mm on 2 Jun.
Guadalupe y Calvo fire, May 2018
1,523 ha
10 days
FWI 34.5
Min. humidity 25 %
55 km away, in 2018
First rain (1 mm or more) after it ended: 1.4 mm on 2 Jun.
Sinaloa fire, May 2016
3,453 ha
10 days
FWI 33.2
Min. humidity 27 %
134 km away, in 2016
First rain (1 mm or more) after it ended: 1.2 mm on 7 Jun.
What happened to them
- 13 days
- median duration
- 2,275 ha
- median area
- 100 %
- went past 1,000 ha
- 1.7 mm
- rain at the end (median; 15 of 15 had it)
It burned an area similar to its twins (1,746 ha against a median of 2,275 ha) and lasted 12 days, against 13 days.
All of them had rain in the ten days after the end: the first rainy day brought a median of 1.7 mm.
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
How it ended
4.0 mmfirst rain
22 Jun5 days after it ended
60km/h · max. gust
It was considered over on 17 Jun, and on 22 Jun 4.0 mm fell. We do not know whether the rain or the firefighters put it out. Twins with rain when they ended: 15 of 15, with a median of 1.7 mm.
Weather on this page: Open-Meteo.com (CC BY 4.0) · Copernicus Climate Change Service (ERA5)
How a twin is chosen
- Same area: fires that have already ended, less than 250 km from this one, since 2016.
- Same start: we compare the FWI on the first day, the minimum humidity that day and the run of days without rain before it. The slider sets how much they may differ.
- Only pages with final weather data (ERA5 reanalysis) calculated in the same way as this fire’s; agricultural and grass burns and pages with data under review are left out.
- Fires burning at the same time as this one (a week before or after) are left out: they share the same spell of weather and do not count as a precedent.
- They are sorted by similarity, and the outlines of the first five are drawn.
Before and after, from space
Drag the line to compare the same ground before the fire and after it.
↔
Before · 30 May 2021
After · 24 Jun 2021
Sentinel-2 did not pass over on that day. Try another date, or use false colour, which is daily.
If the day is cloudy, change the date: each satellite passes once a day. In false colour the burnt ground looks brown or red.
Detections table · 119Every satellite heat detection, one by one, with time, satellite, power and coordinates.
⬇ Download CSV
Times in UTC. Each detection is a 375 m pixel: a large fire yields hundreds per pass.
| Date and time | Satellite | FRP (MW) | Lat | Lon |
|---|
Other fires nearby
- 2,809 haGuadalupe y Calvo24 April 2021 · 12 days · 13 km away
- 2,839 haBallezaJune 2024 · 8 days · 16 km away
- 2,714 haBallezaMay 2025 · 9 days · 23 km away
- 3,800 haGuadalupe y Calvo17 May 2026 · 24 days · 27 km away
- 3,913 haBalleza20 May 2024 · 10 days · 28 km away
- 4,217 haGuadalupe y Calvo21 May 2021 · 29 days · 31 km away
Frequently asked questions
- How long did the Balleza fire last?
- According to the heat detections seen by satellite inside the perimeter, it burned from 6 June 2021 to 17 June 2021 (12 days). The perimeter dates it from 12 June 2021 to 17 June 2021.
- How much area did it burn?
- The perimeter GWIS (Copernicus) rebuilt from heat detections is 1,746 hectares (17.5 km²). It is an estimate: official national figures may differ.
- Which municipalities burned?
- The fire only entered Balleza (1,749 ha, 0.3 %).
- What was the weather like?
- During the fire the temperature reached 31.0 °C, humidity dropped to 15 % and gusts hit 60 km/h. The fire danger index (FWI) reached 60, class Extreme.
- Where does this data come from?
- From the GWIS (Copernicus) burnt perimeter, NASA FIRMS VIIRS hotspots and the administrative boundaries of Mexico (geoBoundaries). It is not an official report.
- How did the fires that started in similar weather in this area end?
- Fires less than 250 km away that started since 2016 with a similar FWI, humidity and dry spell: 15. Their median duration was 13 days and their median area 2,275 ha; 100 % went past 1,000 ha. All of them had rain in the ten days after the end: the first rainy day brought a median of 1.7 mm.
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 · Emergency number and official warnings
Satellite cross-check
History of this page · 1 Changes in area, dates, name, official record or merged pages, compared every night since 24 October 2026.
- Start date: 12 June 2021 → 6 June 2021.
RSS Changes to this page With cross-checks and a citable version
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
How we know this
- Perimeter: GWIS (Copernicus), rebuilt from heat detections rather than mapped on imagery.
- Dates adjusted with the VIIRS detections inside the perimeter, which said 12 June 2021 to 17 June 2021. 119 Suomi-NPP VIIRS detections on those dates.
- We have not matched this page with any official record.
- Weather: Copernicus ERA5 reanalysis at the fire location, in cells of about 25 km.
- Built-up area and population come from the JRC Global Human Settlement Layer (epoch 2020, 100 m cells), summed inside the perimeter: an estimate of what was there, not a damage count.
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 4.0 (CC BY 4.0)). 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.