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Iringa fire, 29 July 2024 Iringa, Chunya

Out · last detection 1 Aug 2024, 23:09 UTC

The fire started on 29 July 2024 in Iringa, Tanzania, and satellites saw it burning for 3 days. Copernicus’s global GWIS system rebuilt a burnt perimeter of 4,303 hectares from heat detections, spread across 2 municipalities.

It is the 38th largest in Iringa since 2016 (of 71 with a page). Number 29 in Tanzania in 2024, of 70.

Compare with…
Burnt area
4,303ha
GWIS perimeter (Copernicus)
Duration
3days
29 Jul 2024 – 31 Jul 2024
Municipalities hit
2
districts
Started on
29 Jul
2024
Heat detections
122
in a single hotspot: 97 MW
Danger at start
34
High · FWI index
Average daily power
301MW
detected power per day, on average

Where it burned

HOTSPOTS BY DAY 29 Jul31 Jul
1 Aug 2024

How it evolved, day by day

29 Jul 2024 · 1 MW · 1 30 Jul 2024 · 561 MW · 62 31 Jul 2024 · 403 MW · 37 1 Aug 2024 · 239 MW · 20
29 Jul 30 Jul 31 Jul 1 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

29°high
33km/h · peak gust
21%lowest humidity

It had gone more than two months without rain (1 mm or more) when it started.

This area had burned before

99% of the perimeter overlaps earlier fires recorded since 2016: 2,503 ha in 2016, 2,431 ha in 2017, 1,587 ha in 2018, 2,467 ha in 2019, 2,642 ha in 2020, 1,023 ha in 2021, 1,245 ha in 2022, 2,064 ha in 2023. Part of it burned more than once, so the yearly figures add up to more than the 4,267 ha that had burned before.

How big is it?

10 km
It burned the equivalent of 2.7% of the area of London (43 km² against 1,583 km²).

London boundary: geoBoundaries · Office for National Statistics (Open Government Licence v3.0).

This compares size, not location: both shapes are at the same scale, north up, centred on each other.

What happened to each town

  1. Iringa where it started
    2,781 ha reached on 29 Jul
    0.2 %
  2. 1,549 ha reached on 31 Jul
    0.1 %

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)
29 Jul 28.7 °C 26 % 22 km/h 0.0 mm High 34
30 Jul 29.4 °C 22 % 33 km/h 0.0 mm Very high 38
31 Jul 27.7 °C 21 % 33 km/h 0.0 mm Very high 40
1 Aug after 25.8 °C 30 % 32 km/h 0.0 mm High 35
2 Aug after 25.5 °C 31 % 33 km/h 0.0 mm High 36
3 Aug after 26.7 °C 29 % 29 km/h 0.0 mm High 33
4 Aug after 27.5 °C 20 % 28 km/h 0.0 mm High 35
5 Aug after 28.6 °C 22 % 23 km/h 0.0 mm High 34
6 Aug after 27.4 °C 23 % 26 km/h 0.0 mm High 35
7 Aug after 27.8 °C 29 % 30 km/h 0.0 mm High 36
8 Aug after 27.5 °C 31 % 31 km/h 0.0 mm High 35
9 Aug after 27.1 °C 34 % 29 km/h 0.0 mm High 32
10 Aug after 27.5 °C 32 % 29 km/h 0.0 mm High 33

Before and after, from space

Drag the line to compare the same ground before the fire and after it.

Before · 22 Jul 2024
After · 7 Aug 2024

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 · Copernicus

On 29 July 2024 the air beside the fire reached 77 µg/m³ of PM2.5. That day averaged 52: 3.5 times the WHO daily guideline (15).

PM2.5 peak77 µg/m³
Days over the guideline7 days
PM10111 µg/m³
Optical depth0.65
2728293031123
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 · 122Every 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 timeSatelliteFRP (MW)LatLon

Other fires nearby

All fires in Tanzania ›

Frequently asked questions

How long did the Iringa fire last?
GWIS (Copernicus) dates it between 29 July 2024 and 31 July 2024: 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 4,303 hectares (43.0 km²). It is an estimate: official national figures may differ.
Which municipalities burned?
The fire entered 2 municipalities: Iringa (2,781 ha, 0.2 %); Chunya (1,549 ha, 0.1 %).
What was the weather like?
During the fire the temperature reached 29.4 °C, humidity dropped to 21 % and gusts hit 33 km/h. The fire danger index (FWI) reached 40, 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.

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

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
What do you think is wrong?

We will only use your email to reply about this report. Privacy. This is not an emergency service: if there is a fire now, call 112.

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. 122 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.

How we build fire pages: methodology ›

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.