Manyoni fire, 27 July 2020 Manyoni, Iringa
The fire started on 27 July 2020 in Manyoni, Tanzania, and satellites saw it burning for 7 days. Copernicus’s global GWIS system rebuilt a burnt perimeter of 4,690 hectares from heat detections, spread across 2 municipalities.
It is the 49th largest in Singida since 2016 (of 124 with a page). Number 73 in Tanzania in 2020, of 187.
The power measured by the satellite is low (24.5 MW in the strongest hotspot), more typical of grass or stubble burning, or a slow surface fire, than of a large crown fire.
Compare with…
- Burnt area
- 4,690ha
- GWIS perimeter (Copernicus)
- Duration
- 7days
- 27 Jul 2020 – 2 Aug 2020
- Municipalities hit
- 2
- districts
- Started on
- 27 Jul
- 2020
- Heat detections
- 114
- in a single hotspot: 24 MW
- Danger at start
- 28
- High · FWI index
- Average daily power
- 78MW
- detected power per day, on average
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 16 days without rain (1 mm or more) when it started.
This area had burned before
54% of the perimeter overlaps earlier fires recorded since 2016: 208 ha in 2016, 1,519 ha in 2017, 504 ha in 2018, 772 ha in 2019. Part of it burned more than once, so the yearly figures add up to more than the 2,517 ha that had burned before.
- 1,019 ha Manyoni fire, July 2017 45,221 ha in total; the hectares shown are those it shares with this fire
- 481 ha Manyoni fire, August 2018 5,010 ha in total; the hectares shown are those it shares with this fire
- 173 ha Manyoni fire, July 2019 6,617 ha in total; the hectares shown are those it shares with this fire
- 6 ha Iringa fire, September 2018 113,445 ha in total; the hectares shown are those it shares with this fire
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
-
Manyoni where it started4,683 ha reached on 27 Jul0.2 %
-
45 ha0.0 %
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.
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) |
|---|---|---|---|---|---|
| 27 Jul | 25.0 °C | 39 % | 31 km/h | 0.0 mm | High 28 |
| 28 Jul | 25.7 °C | 36 % | 34 km/h | 0.0 mm | High 30 |
| 29 Jul | 26.2 °C | 42 % | 30 km/h | 0.0 mm | High 27 |
| 30 Jul | 27.2 °C | 38 % | 35 km/h | 0.0 mm | High 29 |
| 31 Jul | 27.5 °C | 39 % | 30 km/h | 0.0 mm | High 29 |
| 1 Aug | 27.1 °C | 39 % | 30 km/h | 0.0 mm | High 28 |
| 2 Aug | 25.5 °C | 33 % | 33 km/h | 0.0 mm | High 32 |
| 3 Aug after | 26.6 °C | 32 % | 39 km/h | 0.0 mm | High 32 |
| 4 Aug after | 26.6 °C | 37 % | 35 km/h | 0.0 mm | High 30 |
| 5 Aug after | 27.5 °C | 39 % | 28 km/h | 0.0 mm | High 29 |
| 6 Aug after | 28.9 °C | 37 % | 27 km/h | 0.0 mm | High 29 |
| 7 Aug after | 28.9 °C | 32 % | 29 km/h | 0.0 mm | High 31 |
| 8 Aug after | 26.8 °C | 35 % | 40 km/h | 0.0 mm | High 35 |
| 9 Aug after | 26.3 °C | 36 % | 27 km/h | 0.0 mm | High 28 |
| 10 Aug after | 27.0 °C | 36 % | 26 km/h | 0.0 mm | High 29 |
| 11 Aug after | 27.8 °C | 36 % | 26 km/h | 0.0 mm | High 28 |
| 12 Aug after | 27.5 °C | 39 % | 29 km/h | 0.0 mm | High 30 |
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.
Detections table · 114Every satellite heat detection, one by one, with time, satellite, power and coordinates.
| Date and time | Satellite | FRP (MW) | Lat | Lon |
|---|
Other fires nearby
- 113,063 haIringa19 August 2026 · 45 days · 7 km away
- 45,221 haManyoni4 July 2017 · 37 days · 22 km away
- 42,802 haIringa28 July 2023 · 43 days · 30 km away
- 75,347 haIringa20 July 2026 · 45 days · 31 km away
- 113,445 haIringaSeptember 2018 · 35 days · 32 km away
- 97,386 haIringa7 July 2019 · 26 days · 35 km away
Frequently asked questions
- How long did the Manyoni fire last?
- GWIS (Copernicus) dates it between 27 July 2020 and 2 August 2020: 7 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 4,690 hectares (46.9 km²). It is an estimate: official national figures may differ.
- Which municipalities burned?
- The fire entered 2 municipalities: Manyoni (4,683 ha, 0.2 %); Iringa (45 ha, 0.0 %).
- What was the weather like?
- During the fire the temperature reached 27.5 °C, humidity dropped to 33 % and gusts hit 35 km/h. The fire danger index (FWI) reached 32, class 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.
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 Changes in area, dates, name, official record or merged pages, compared every night since 24 October 2026.
No changes since 24 October 2026.
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 from the perimeter: the VIIRS detections inside it did not change them. 114 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.
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.