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Manyoni fire, 29 July 2023 Manyoni

Out · last detection 2 Aug 2023, 11:09 UTC

The fire started on 29 July 2023 in Manyoni, Tanzania, and satellites saw it burning for 5 days. Copernicus’s global GWIS system rebuilt a burnt perimeter of 3,102 hectares from heat detections, spread across a single municipality.

It is the 120th largest in Singida since 2016 (of 124 with a page). Number 43 in Tanzania in 2023, of 44.

Burnt area
3,102ha
GWIS perimeter (Copernicus)
Duration
5days
29 Jul 2023 – 2 Aug 2023
Municipalities hit
1
districts
Started on
29 Jul
2023
Heat detections
91
in a single hotspot: 84 MW
Danger at start
35
High · FWI index
Energy released
1.4GW
sum of detected power

Where it burned

2 Aug 2023
HOTSPOTS BY DAY 29 Jul2 Aug

How it evolved, day by day

29303112

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
52km/h · peak gust
28%lowest humidity

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

This area had burned before

88% of the perimeter overlaps earlier fires recorded since 2016: 773 ha in 2016, 1,314 ha in 2017, 770 ha in 2018, 1,242 ha in 2019, 242 ha in 2020, 324 ha in 2022. Part of it burned more than once, so the yearly figures add up to more than the 2,724 ha that had burned before.

What happened to each town

  1. Manyoni where it started
    3,124 ha reached on 29 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 27.3 °C 37 % 39 km/h 0.0 mm High 35
30 Jul 28.8 °C 32 % 30 km/h 0.0 mm High 31
31 Jul 28.5 °C 31 % 35 km/h 0.0 mm High 33
1 Aug 27.0 °C 28 % 45 km/h 0.0 mm Very high 38
2 Aug 24.5 °C 37 % 52 km/h 0.2 mm Very high 42
3 Aug after 26.7 °C 33 % 44 km/h 0.0 mm High 37
4 Aug after 25.4 °C 33 % 46 km/h 0.0 mm Very high 38
5 Aug after 26.1 °C 31 % 46 km/h 0.0 mm Very high 38
6 Aug after 24.1 °C 45 % 46 km/h 0.6 mm High 30
7 Aug after 25.1 °C 39 % 44 km/h 0.4 mm High 30
8 Aug after 27.3 °C 29 % 37 km/h 0.0 mm High 33
9 Aug after 26.8 °C 30 % 38 km/h 0.0 mm High 36
10 Aug after 26.3 °C 29 % 44 km/h 0.0 mm High 37
11 Aug after 27.2 °C 33 % 37 km/h 0.0 mm High 34
12 Aug after 26.5 °C 35 % 41 km/h 0.0 mm High 36

Before and after, from space

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

Before · 22 Jul 2023
After · 9 Aug 2023

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 · 91Every 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 Manyoni fire last?
GWIS (Copernicus) dates it between 29 July 2023 and 2 August 2023: 5 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 3,102 hectares (31.0 km²). It is an estimate: official national figures may differ.
Which municipalities burned?
The fire only entered Manyoni (3,124 ha, 0.1 %).
What was the weather like?
During the fire the temperature reached 28.8 °C, humidity dropped to 28 % and gusts hit 52 km/h. The fire danger index (FWI) reached 42, 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.

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.