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Yaso fire, 7 January 2017 Yaso, Gida Ayana, Ibantu

Out · last detection 15 Jan 2017, 11:25 UTC

The fire started on 7 January 2017 in Yaso, Ethiopia, and satellites saw it burning for 8 days. Copernicus’s global GWIS system rebuilt a burnt perimeter of 11,905 hectares from heat detections, spread across 3 municipalities.

It is the 2th largest in Oromia since 2016 (of 264 with a page). Number 6 in Ethiopia in 2017, of 266.

Compare with…
Burnt area
11,905ha
GWIS perimeter (Copernicus)
Duration
8days
7 Jan 2017 – 14 Jan 2017
Municipalities hit
3
districts
Started on
7 Jan
2017
Heat detections
364
in a single hotspot: 41 MW
Danger at start
41
Very high · FWI index
Average daily power
209MW
detected power per day, on average

Where it burned

HOTSPOTS BY DAY 7 Jan14 Jan
15 Jan 2017

How it evolved, day by day

7 Jan 2017 · 1 MW · 1 8 Jan 2017 · 120 MW · 27 9 Jan 2017 · 351 MW · 62 10 Jan 2017 · 434 MW · 79 11 Jan 2017 · 509 MW · 68 12 Jan 2017 · 329 MW · 84 13 Jan 2017 · 98 MW · 25 14 Jan 2017 · 33 MW · 6 15 Jan 2017 · 6 MW · 1
7 Jan 9 Jan 11 Jan 13 Jan 15 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

34°high
37km/h · peak gust
8%lowest humidity

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

This area had burned before

61% of the perimeter overlaps earlier fires recorded since 2016: 7,406 ha in 2016.

How big is it?

10 km
It burned the equivalent of 7.5% of the area of London (119 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. Yaso where it started
    10,830 ha reached on 1 Jan
    4.2 %
  2. 1,139 ha reached on 6 Jan
    0.6 %
  3. 23 ha reached on 15 Jan
    0.0 %

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)
1 Jan 33.1 °C 14 % 37 km/h 0.0 mm Very high 41
2 Jan 33.2 °C 12 % 30 km/h 0.0 mm Very high 40
3 Jan 33.9 °C 15 % 32 km/h 0.0 mm Very high 42
4 Jan 33.1 °C 15 % 32 km/h 0.0 mm Very high 42
5 Jan 33.3 °C 11 % 31 km/h 0.0 mm Very high 42
6 Jan 32.8 °C 11 % 31 km/h 0.0 mm Very high 43
7 Jan 32.8 °C 12 % 30 km/h 0.0 mm Very high 43
8 Jan 33.2 °C 15 % 32 km/h 0.0 mm Very high 45
9 Jan 32.9 °C 16 % 32 km/h 0.0 mm Very high 44
10 Jan 33.8 °C 12 % 34 km/h 0.0 mm Very high 45
11 Jan 33.2 °C 8 % 34 km/h 0.0 mm Very high 47
12 Jan 32.9 °C 11 % 31 km/h 0.0 mm Very high 47
13 Jan 33.2 °C 11 % 30 km/h 0.0 mm Very high 46
14 Jan 33.2 °C 13 % 34 km/h 0.0 mm Very high 48
15 Jan after 33.2 °C 17 % 36 km/h 0.0 mm Very high 47
16 Jan after 34.7 °C 15 % 34 km/h 0.0 mm Very high 46
17 Jan after 34.6 °C 14 % 33 km/h 0.0 mm Very high 46
18 Jan after 34.8 °C 13 % 33 km/h 0.0 mm Very high 46
19 Jan after 34.2 °C 16 % 36 km/h 0.0 mm Very high 48
20 Jan after 33.1 °C 17 % 34 km/h 0.0 mm Very high 46
21 Jan after 33.6 °C 20 % 39 km/h 0.0 mm Very high 46
22 Jan after 34.9 °C 19 % 35 km/h 0.0 mm Very high 44
23 Jan after 35.6 °C 15 % 34 km/h 0.0 mm Very high 44
24 Jan after 35.3 °C 17 % 37 km/h 0.0 mm Very high 44
25 Jan after 35.2 °C 17 % 40 km/h 0.0 mm Very high 46

Before and after, from space

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

Before · 31 Dec 2016
After · 21 Jan 2017

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 · 364Every 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 Yaso fire last?
GWIS (Copernicus) dates it between 7 January 2017 and 14 January 2017: 8 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 11,905 hectares (119.0 km²). It is an estimate: official national figures may differ.
Which municipalities burned?
The fire entered 3 municipalities: Yaso (10,830 ha, 4.2 %); Gida Ayana (1,139 ha, 0.6 %); Ibantu (23 ha, 0.0 %).
What was the weather like?
During the fire the temperature reached 33.9 °C, humidity dropped to 8 % and gusts hit 37 km/h. The fire danger index (FWI) reached 48, 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.

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

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 from the perimeter: the VIIRS detections inside it did not change them. 364 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 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.