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ET · Ethiopia · –

Limu fire, 18 January 2022 Limu, Gida Ayana

Out · last detection 2 Feb 2022, 10:10 UTC

The fire started on 18 January 2022 in Limu, Ethiopia, and satellites saw it burning for 16 days. Copernicus’s global GWIS system rebuilt a burnt perimeter of 5,108 hectares from heat detections, spread across 2 municipalities.

It is the 28th largest in Oromia since 2016 (of 223 with a page). Number 16 in Ethiopia in 2022, of 135.

Compare with…
Burnt area
5,108ha
GWIS perimeter (Copernicus)
Duration
16days
18 Jan 2022 – 2 Feb 2022
Municipalities hit
2
districts
Started on
18 Jan
2022
Heat detections
161
in a single hotspot: 144 MW
Danger at start
32
High · FWI index
Average daily power
238MW
detected power per day, on average

Where it burned

HOTSPOTS BY DAY 18 Jan2 Feb
2 Feb 2022

How it evolved, day by day

18 Jan 2022 · 46 MW · 4 20 Jan 2022 · 69 MW · 13 21 Jan 2022 · 128 MW · 9 22 Jan 2022 · 26 MW · 4 24 Jan 2022 · 88 MW · 34 25 Jan 2022 · 1,918 MW · 82 26 Jan 2022 · 78 MW · 10 27 Jan 2022 · 0 MW · 1 30 Jan 2022 · 6 MW · 1 2 Feb 2022 · 16 MW · 3
18 Jan 21 Jan 25 Jan 30 Jan

Fire radiative power detected each day, in megawatts, and number of hotspots. The magenta bar marks the peak day.

The weather it burned in

33°high
36km/h · peak gust
19%lowest humidity

It had gone 6 days without rain (1 mm or more) when it started.

This area had burned before

37% of the perimeter overlaps earlier fires recorded since 2016: 239 ha in 2016, 451 ha in 2017, 871 ha in 2019, 393 ha in 2020, 476 ha in 2021. Part of it burned more than once, so the yearly figures add up to more than the 1,913 ha that had burned before.

How big is it?

10 km
It burned the equivalent of 3.2% of the area of London (51 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. Limu where it started
    4,538 ha reached on 20 Jan
    4.5 %
  2. 601 ha reached on 18 Jan
    0.3 %

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 2020
Built-up area8.4 ha
Residents≈ 5,900

Inside the perimeter there were about 8.4 hectares of built-up land and about 5,900 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)
18 Jan 30.5 °C 26 % 21 km/h 0.0 mm High 32
19 Jan 29.8 °C 28 % 22 km/h 0.0 mm High 30
20 Jan 30.1 °C 24 % 28 km/h 0.0 mm High 32
21 Jan 31.7 °C 19 % 22 km/h 0.0 mm High 33
22 Jan 31.7 °C 19 % 23 km/h 0.0 mm High 32
23 Jan 30.9 °C 22 % 27 km/h 0.0 mm High 33
24 Jan 31.2 °C 19 % 24 km/h 0.0 mm High 33
25 Jan 33.0 °C 19 % 26 km/h 0.0 mm High 34
26 Jan 32.9 °C 19 % 36 km/h 0.0 mm High 38
27 Jan 33.1 °C 22 % 24 km/h 0.0 mm High 35
28 Jan 32.7 °C 21 % 30 km/h 0.0 mm High 36
29 Jan 31.9 °C 25 % 32 km/h 0.0 mm High 35
30 Jan 32.3 °C 24 % 33 km/h 0.0 mm High 38
31 Jan 32.3 °C 27 % 31 km/h 0.0 mm High 37
1 Feb 31.1 °C 22 % 32 km/h 0.0 mm High 36
2 Feb 33.2 °C 25 % 24 km/h 0.0 mm High 35
3 Feb after 31.9 °C 23 % 22 km/h 0.0 mm High 36
4 Feb after 31.8 °C 23 % 25 km/h 0.0 mm High 35
5 Feb after 33.7 °C 21 % 26 km/h 0.0 mm High 37
6 Feb after 32.0 °C 20 % 25 km/h 0.0 mm High 35
7 Feb after 31.7 °C 17 % 35 km/h 0.0 mm Very high 40
8 Feb after 32.4 °C 19 % 30 km/h 0.0 mm High 36
9 Feb after 32.8 °C 19 % 29 km/h 0.0 mm High 36
10 Feb after 33.8 °C 22 % 27 km/h 0.0 mm High 36
11 Feb after 32.4 °C 22 % 24 km/h 0.0 mm High 36
12 Feb after 31.0 °C 28 % 22 km/h 0.8 mm High 27

Its twins: fires that started in the same weather

It started with an FWI of 31.5, a minimum humidity of 26% and 6 days without rain. Fires in the area that started in weather like this since 2016: 23.

FWI at the start 31.5
Minimum humidity 26 %
Days without rain 6
this fire chosen twins rest of the area
Almost identicalSimilar

Outlines of the closest twins

Wenbera fire, April 2016
2,971 ha 6 days FWI 32.7 Min. humidity 26 % 155 km away, in 2016

First rain (1 mm or more) after it ended: 3.5 mm on 13 Apr.

What happened to them

9 days
median duration
2,560 ha
median area
100 %
went past 1,000 ha
2.1 mm
rain at the end (median; 5 of 23 had it)

It was 2.0 times larger than the median of its twins and lasted 16 days, against 9 days.

Only 3 of its 23 twins burned more. The weather on the first day does not explain everything: the wind in the following days, the fuel and the firefighting also count. In 18 of 23, 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 2.1 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

—first rain
—no rain in ten days
36km/h · max. gust

It was considered over on 2 Feb, and not even 1 mm fell in the following ten days: it went out without rain. Twins with rain when they ended: 5 of 23, with a median of 2.1 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.

How we calculate it

Before and after, from space

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

Before · 11 Jan 2022
After · 9 Feb 2022

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 · 161Every 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 Ethiopia

Frequently asked questions

How long did the Limu fire last?
According to the heat detections seen by satellite inside the perimeter, it burned from 18 January 2022 to 2 February 2022 (16 days). The perimeter dates it from 20 January 2022 to 27 January 2022.
How much area did it burn?
The perimeter GWIS (Copernicus) rebuilt from heat detections is 5,108 hectares (51.1 km²). It is an estimate: official national figures may differ.
Which municipalities burned?
The fire entered 2 municipalities: Limu (4,538 ha, 4.5 %); Gida Ayana (601 ha, 0.3 %).
What was the weather like?
During the fire the temperature reached 33.2 °C, humidity dropped to 19 % and gusts hit 36 km/h. The fire danger index (FWI) reached 38, class Very high.
Where does this data come from?
From the GWIS (Copernicus) burnt perimeter, NASA FIRMS VIIRS hotspots and the administrative boundaries of Ethiopia (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: 23. Their median duration was 9 days and their median area 2,560 ha; 100 % went past 1,000 ha. Only 3 of its 23 twins burned more. The weather on the first day does not explain everything: the wind in the following days, the fuel and the firefighting also count. In 18 of 23, 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 2.1 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.

Satellite cross-check

History of this page · 2 Changes in area, dates, name, official record or merged pages, compared every night since 24 October 2026.
  1. Last day with fire: 27 January 2022 → 2 February 2022.
  2. Start date: 20 January 2022 → 18 January 2022.

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.

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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 20 January 2022 to 27 January 2022. 161 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.

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 ADM3 (Open Data Commons Open Database License 1.0). 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.