Burned area
satellite only4,840ha
Perimeter published by GWIS (Copernicus).
- Source
- GWIS (Copernicus)
- Date
- 25 Jul 2025 – 3 Aug 2025
+− cross-check
No official record is matched to this page to compare it with.
TZ · Tanzania · –
Serengeti fire, 25 July 2025 Serengeti
Out · last detection 3 Aug 2025, 23:28 UTC
The fire started on 25 July 2025 in Serengeti, Tanzania, and satellites saw it burning for 10 days. Copernicus’s global GWIS system rebuilt a burnt perimeter of 4,840 hectares from heat detections, spread across a single municipality.
It is the 26th largest in Mara since 2016 (of 63 with a page). Number 6 in Tanzania in 2025, of 23.
Use this data
Compare with…
Use this data
Fire page data · version 2026-10-27matches 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 only10days
25 Jul 2025 to 3 Aug 2025: first and last day with fire on the page.
- Source
- GWIS (Copernicus) · NASA FIRMS · VIIRS
- Date
- last detection: 3 Aug 2025, 23:28 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 only25 Jul 2025
First day with fire seen by the satellites or the perimeter.
- Source
- GWIS (Copernicus) · NASA FIRMS · VIIRS
- Date
- 25 Jul 2025
+− cross-check
No official record is matched to this page, so the alert time and the cause are not known here.
Hotspots
satellite only253
VIIRS detections at 375 m. Most intense hotspot: 64 MW.
- Source
- NASA FIRMS · VIIRS (Suomi NPP)
- Date
- 25 Jul 2025 – 3 Aug 2025
+− 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 only670MW
Total radiative power on 27 July 2025; hotspots that day: 71.
- Source
- NASA FIRMS · VIIRS (FRP)
- Date
- 27 Jul 2025
+− 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
model30.0FWI · high
Fire Weather Index (Canadian system) computed by WorldFires for the day the fire started. Consecutive days without rain before: 7.
- Source
- WorldFires calculation (Canadian FWI system)
- Date
- 25 Jul 2025, 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
model32.0°C · 16% RH
High of 32.0 °C and minimum humidity of 16% on 26 July 2025; gusts of 40 km/h on 30 July 2025.
- Source
- weather model at the fire’s grid cell
- Date
- 25 Jul 2025 – 3 Aug 2025
- 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 0.32 ha of built-up area (100 m grid, epoch 2025).
- 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: 26 July 2025 → 25 July 2025.
-
· reconstructed GHSLPopulation and built-up area computed
What was saved on 27 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
- 4,840 ha
- Dates
- 25 Jul 2025 – 3 Aug 2025
- Name
- Serengeti
- Official record
- —
Versioned permanent link
https://worldfires.org/en/fire/serengeti-2025-07?v=2026-10-27A 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 serengeti-2025-07.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 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 2025-07-25 | 9 | 23 | 30.7 | 16.9 | 24 | 10.6 | 25.2 | 0 | 30 | alto | 1 |
| 2025-07-26 | 23 | 158 | 32 | 14.3 | 16 | 9.6 | 26.6 | 0 | 34.9 | alto | 1 |
| 2025-07-27 | 71 | 670 | 31.2 | 14.1 | 21 | 6.9 | 22.3 | 0 | 33.1 | alto | 1 |
| 2025-07-28 | 39 | 348 | 30.8 | 15.3 | 22 | 12.9 | 29.9 | 0 | 38.7 | muy_alto | 1 |
| 2025-07-29 | 20 | 100 | 30.4 | 16.8 | 27 | 15.2 | 32.8 | 0 | 38.6 | muy_alto | 1 |
| 2025-07-30 | 20 | 56 | 29.1 | 16 | 25 | 17.2 | 39.6 | 0 | 40.7 | muy_alto | 1 |
| 2025-07-31 | 30 | 302 | 30.7 | 14.5 | 24 | 12.2 | 29.5 | 0 | 36.5 | alto | 1 |
| 2025-08-01 | 10 | 22 | 30.3 | 16.2 | 26 | 12.1 | 28.1 | 0 | 36.5 | alto | 1 |
| 2025-08-02 | 28 | 108 | 30 | 15.8 | 27 | 10.4 | 24.1 | 0 | 34.6 | alto | 1 |
| 2025-08-03 | 3 | 41 | 30.3 | 16.5 | 23 | 11.7 | 29.2 | 0 | 36 | alto | 1 |
| 2025-08-04 | 0 | 0 | 29.3 | 16.4 | 27 | 11.7 | 28.1 | 0.1 | 35.6 | alto | 0 |
| 2025-08-05 | 0 | 0 | 30.1 | 17.7 | 26 | 10.5 | 25.2 | 1.7 | 19.8 | 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
- 4,840ha
- GWIS perimeter (Copernicus)
- Duration
- 10days
- 25 Jul 2025 – 3 Aug 2025
- Municipalities hit
- 1
- districts
- Started on
- 25 Jul
- 2025
- Heat detections
- 253
- in a single hotspot: 64 MW
- Danger at start
- 30
- High · FWI index
- Average daily power
- 183MW
- detected power per day, on average
Where it burned
HOTSPOTS BY DAY
25 Jul3 Aug
3 Aug 2025
How it evolved, day by day
25 Jul
27 Jul
29 Jul
31 Jul
2 Aug
Fire radiative power detected each day, in megawatts, and number of hotspots. The magenta bar marks the peak day.
The weather it burned in
32°high
40km/h · peak gust
16%lowest humidity
It had gone 7 days without rain (1 mm or more) when it started. Rain came after the fire: 1.7 mm on 5 Aug.
This area had burned before
93% of the perimeter overlaps earlier fires recorded since 2016: 2,644 ha in 2016, 790 ha in 2018, 129 ha in 2019, 3,923 ha in 2021, 1,136 ha in 2022, 899 ha in 2023. Part of it burned more than once, so the yearly figures add up to more than the 4,492 ha that had burned before.
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
-
Serengeti where it started4,872 ha reached on 25 Jul0.4 %
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 2025Built-up area0.32 ha
Residents≈ 40
Inside the perimeter there were about 0.32 hectares of built-up land and about 40 residents (GHSL 2025, 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. The GHSL 2025 epoch is a projection made from 2020 and earlier data.
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) |
|---|---|---|---|---|---|
| 25 Jul | 30.7 °C | 24 % | 25 km/h | 0.0 mm | High 30 |
| 26 Jul | 32.0 °C | 16 % | 27 km/h | 0.0 mm | High 35 |
| 27 Jul | 31.2 °C | 21 % | 22 km/h | 0.0 mm | High 33 |
| 28 Jul | 30.8 °C | 22 % | 30 km/h | 0.0 mm | Very high 39 |
| 29 Jul | 30.4 °C | 27 % | 33 km/h | 0.0 mm | Very high 39 |
| 30 Jul | 29.1 °C | 25 % | 40 km/h | 0.0 mm | Very high 41 |
| 31 Jul | 30.7 °C | 24 % | 30 km/h | 0.0 mm | High 36 |
| 1 Aug | 30.3 °C | 26 % | 28 km/h | 0.0 mm | High 36 |
| 2 Aug | 30.0 °C | 27 % | 24 km/h | 0.0 mm | High 35 |
| 3 Aug | 30.3 °C | 23 % | 29 km/h | 0.0 mm | High 36 |
| 4 Aug after | 29.3 °C | 27 % | 28 km/h | 0.1 mm | High 36 |
| 5 Aug after | 30.1 °C | 26 % | 25 km/h | 1.7 mm | Moderate 20 |
Its twins: fires that started in the same weather
It started with an FWI of 30.0, a minimum humidity of 24% and 7 days without rain. Fires in the area that started in weather like this since 2016: 21.
FWI at the start
30.0
Minimum humidity
24 %
Days without rain
7
this fire
chosen twins
rest of the area
Almost identicalSimilar
Outlines of the closest twins
This fire · Serengeti fire, 25 July 2025
4,840 ha
10 days
FWI 30.0
Min. humidity 24 %
Serengeti fire, July 2022
4,924 ha
6 days
FWI 28.2
Min. humidity 24 %
58 km away, in 2022
First rain (1 mm or more) after it ended: none in the following ten days.
Bariadi fire, July 2019
3,732 ha
3 days
FWI 28.9
Min. humidity 23 %
74 km away, in 2019
First rain (1 mm or more) after it ended: none in the following ten days.
Serengeti fire, July 2022
3,252 ha
5 days
FWI 27.3
Min. humidity 24 %
64 km away, in 2022
First rain (1 mm or more) after it ended: none in the following ten days.
Bunda fire, July 2022
3,228 ha
5 days
FWI 31.5
Min. humidity 26 %
72 km away, in 2022
First rain (1 mm or more) after it ended: none in the following ten days.
Bariadi fire, July 2022
3,488 ha
5 days
FWI 32.1
Min. humidity 26 %
68 km away, in 2022
First rain (1 mm or more) after it ended: none in the following ten days.
What happened to them
- 5 days
- median duration
- 3,252 ha
- median area
- 10 %
- went past 10,000 ha
- 3.1 mm
- rain at the end (median; 9 of 21 had it)
It burned an area similar to its twins (4,840 ha against a median of 3,252 ha) and lasted 10 days, against 5 days.
In 12 of 21, not even 1 mm fell in the ten days after the end: they went out without rain. In the rest, the first rainy day brought a median of 3.1 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
1.7 mmfirst rain
5 Aug2 days after it ended
40km/h · max. gust
It was considered over on 3 Aug, and on 5 Aug 1.7 mm fell. We do not know whether the rain or the firefighters put it out. Twins with rain when they ended: 9 of 21, with a median of 3.1 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 · 18 Jul 2025
After · 10 Aug 2025
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.
The smoke
CAMS · CopernicusOn 1 August 2025 the air beside the fire reached 44 µg/m³ of PM2.5. That day averaged 28: 1.9 times the WHO daily guideline (15).
PM2.5 peak44 µg/m³
Days over the guideline8 days
PM1044 µg/m³
Optical depth1.08
WHO 15
24 Jul27 Jul30 Jul2 Aug5 Aug
Good
Fair
Moderate
Poor
Very poor
Extremely poor
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 · 253Every 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
Frequently asked questions
- How long did the Serengeti fire last?
- According to the heat detections seen by satellite inside the perimeter, it burned from 25 July 2025 to 3 August 2025 (10 days). The perimeter dates it from 26 July 2025 to 3 August 2025.
- How much area did it burn?
- The perimeter GWIS (Copernicus) rebuilt from heat detections is 4,840 hectares (48.4 km²). It is an estimate: official national figures may differ.
- Which municipalities burned?
- The fire only entered Serengeti (4,872 ha, 0.4 %).
- What was the weather like?
- During the fire the temperature reached 32.0 °C, humidity dropped to 16 % and gusts hit 40 km/h. The fire danger index (FWI) reached 41, class Very high.
- Where does this data come from?
- From the GWIS (Copernicus) burnt perimeter, NASA FIRMS VIIRS hotspots and the administrative boundaries of Tanzania (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: 21. Their median duration was 5 days and their median area 3,252 ha; 10 % went past 10,000 ha. In 12 of 21, not even 1 mm fell in the ten days after the end: they went out without rain. In the rest, the first rainy day brought a median of 3.1 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: 112 · 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: 26 July 2025 → 25 July 2025.
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 26 July 2025 to 3 August 2025. 253 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 2025, 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 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.