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Aokas fire, September 2023 أوقاس · Aokas, Souk El Tenine, Taskriout

Out · last detection 17 Sept 2023, 13:40 UTC

The fire started on 16 September 2023 in Aokas, Algeria, and satellites saw it burning for 2 days. Copernicus mapped a burnt perimeter of 338 hectares from satellite imagery, spread across 3 municipalities.

It is the 45th largest in Bejaia since 2016 (of 101 with a page). Number 31 in Algeria in 2023, of 86.

The power measured by the satellite is low (14.3 MW in the strongest hotspot), more typical of grass or stubble burning, or a slow surface fire, than of a large crown fire.

Burnt area
338ha
Copernicus perimeter
Duration
2days
16 Sept 2023 – 17 Sept 2023
Municipalities hit
3
communes
Started on
16 Sept
2023
Heat detections
17
in a single hotspot: 14 MW
Danger at start
27
High · FWI index
Energy released
126MW
sum of detected power

Where it burned

17 Sept 2023
HOTSPOTS BY DAY 16 Sept17 Sept

How it evolved, day by day

1617

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

The weather it burned in

35°high
43km/h · peak gust
19%lowest humidity

It had gone 2 days without rain (1 mm or more) when it started. Rain came after the fire: 2.1 mm on 22 Sept.

This area had burned before

87% of the perimeter overlaps earlier fires recorded since 2016: 173 ha in 2017, 143 ha in 2019, 292 ha in 2021. Part of it burned more than once, so the yearly figures add up to more than the 294 ha that had burned before.

What happened to each town

  1. Aokas أوقاس 15,989 inhabitants · 3.2 km from the town where it started
    313 ha reached on 16 Sept
    11 %
  2. Souk El Tenine سوق الإثنين،بجاية 14,045 inhabitants · 5.4 km from the town
    13 ha
    0.5 %
  3. 13 ha
    0.4 %

Burnt area inside each municipality, from crossing the official 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.

What burned

  • Other natural land72 %
  • Mixed forest28 %

Land cover inside the perimeter as reported by Copernicus EFFIS (outside the Corine Land Cover area).

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)
16 Sept 30.3 °C 38 % 38 km/h 0.0 mm High 27
17 Sept 34.8 °C 19 % 43 km/h 0.0 mm Very high 45
18 Sept after 29.9 °C 36 % 25 km/h 0.0 mm High 31
19 Sept after 29.0 °C 36 % 22 km/h 0.1 mm High 30
20 Sept after 29.2 °C 38 % 43 km/h 0.5 mm High 30
21 Sept after 28.0 °C 37 % 28 km/h 0.0 mm High 29
22 Sept after 26.0 °C 46 % 34 km/h 2.1 mm Low 10

Before and after, from space

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

Before · 9 Sept 2023
After · 24 Sept 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.

The smoke

CAMS · Copernicus

On 18 September 2023 the air beside the fire reached 39 µg/m³ of PM2.5. That day averaged 28: 1.9 times the WHO daily guideline (15).

PM2.5 peak39 µg/m³
Days over the guideline5 days
PM1089 µg/m³
Optical depth0.93
14151617181920
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 · 17Every 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 Algeria ›

Frequently asked questions

How long did the Aokas fire last?
Copernicus dates it between 16 September 2023 and 17 September 2023: 2 days between the first and last image with fire.
How much area did it burn?
The perimeter Copernicus measured from satellite imagery is 338 hectares (3.4 km²). Official national figures may differ.
Which municipalities burned?
The fire entered 3 municipalities: Aokas (313 ha, 11 %); Souk El Tenine (13 ha, 0.5 %); Taskriout (13 ha, 0.4 %).
Did the fire reach a town?
The closest fire to a town centre came within 3.2 km of Aokas. That is the distance to the perimeter or nearest hotspot; it does not mean it entered the houses.
What was the weather like?
During the fire the temperature reached 34.8 °C, humidity dropped to 19 % and gusts hit 43 km/h. The fire danger index (FWI) reached 45, class Very high.
Where does this data come from?
From the EFFIS (Copernicus) burnt perimeter, NASA FIRMS VIIRS hotspots and the administrative boundaries of Algeria (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: 14 · 1021

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 14 · 1021.

Where this data comes from

The perimeter and land cover come from the Copernicus European Forest Fire Information System (EFFIS), measured on MODIS and Sentinel-2 imagery and published under CC BY 4.0. 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 (Creative Commons Attribution-ShareAlike 2.0). The area per municipality is computed by WorldFires by crossing the perimeter with those boundaries, so it may differ slightly from each country’s official figure.