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Chanal fire, March 2024 Chanal

Out · last detection 9 Apr 2024, 08:27 UTC

The fire started on 25 March 2024 in Chanal, Mexico, and satellites saw it burning for 15 days. Copernicus’s global GWIS system rebuilt a burnt perimeter of 9,107 hectares from heat detections, spread across a single municipality.

It is the 5th largest in Chiapas since 2016 (of 265 with a page). Number 16 in Mexico in 2024, of 289.

Burnt area
9,107ha
GWIS perimeter (Copernicus)
Duration
15days
25 Mar 2024 – 8 Apr 2024
Municipalities hit
1
municipalities
Started on
25 Mar
2024
Heat detections
797
in a single hotspot: 163 MW
Danger at start
14
Moderate · FWI index
Energy released
8.7GW
sum of detected power

Where it burned

9 Apr 2024
HOTSPOTS BY DAY 25 Mar8 Apr

How it evolved, day by day

2526272829303112356789

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

The weather it burned in

26°high
58km/h · peak gust
21%lowest humidity

It had gone one day without rain (1 mm or more) when it started. Rain came after the fire: 2.2 mm on 11 Apr.

This area had burned before

40% of the perimeter overlaps earlier fires recorded since 2016: 635 ha in 2016, 29 ha in 2017, 1,116 ha in 2018, 1,665 ha in 2019, 1,449 ha in 2021, 621 ha in 2022. Part of it burned more than once, so the yearly figures add up to more than the 3,631 ha that had burned before.

What happened to each town

  1. Chanal where it started
    9,158 ha reached on 21 Mar
    22 %

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.

Official record

According to CONAFOR, 4 fires started inside this perimeter on these dates, totalling 8,099 ha (the satellite measured 9,107 ha).

CONAFOR (Comisión Nacional Forestal), estadística de incendios forestales en datos.gob.mx (CC BY 4.0). This is the agency’s consolidated statistic: it measures the area in its own way, which is why it can differ from the satellite.

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)
21 Mar 25.7 °C 35 % 28 km/h 0.1 mm Moderate 14
22 Mar 26.0 °C 37 % 31 km/h 0.1 mm Moderate 16
23 Mar 21.3 °C 55 % 25 km/h 1.3 mm Low 5
24 Mar 24.4 °C 37 % 49 km/h 0.0 mm Moderate 16
25 Mar 23.8 °C 37 % 58 km/h 0.0 mm Moderate 21
26 Mar 26.0 °C 23 % 38 km/h 0.0 mm High 24
27 Mar 26.3 °C 24 % 33 km/h 0.1 mm High 21
28 Mar 17.6 °C 65 % 31 km/h 5.9 mm Very low 0
29 Mar 23.3 °C 34 % 27 km/h 0.0 mm Very low 4
30 Mar 24.9 °C 31 % 30 km/h 0.0 mm Moderate 12
31 Mar 25.5 °C 21 % 24 km/h 0.0 mm Moderate 18
1 Apr 25.2 °C 37 % 33 km/h 0.1 mm Moderate 18
2 Apr 25.4 °C 37 % 41 km/h 0.0 mm Moderate 20
3 Apr 22.1 °C 47 % 36 km/h 1.1 mm Low 8
4 Apr 19.4 °C 62 % 23 km/h 4.0 mm Very low 1
5 Apr 21.3 °C 51 % 29 km/h 0.2 mm Very low 4
6 Apr 23.7 °C 41 % 22 km/h 0.4 mm Low 7
7 Apr 25.2 °C 37 % 26 km/h 0.0 mm Moderate 13
8 Apr 24.4 °C 41 % 24 km/h 0.4 mm Moderate 12
9 Apr after 25.3 °C 46 % 32 km/h 1.1 mm Low 9
10 Apr after 25.2 °C 38 % 36 km/h 4.4 mm Very low 3
11 Apr after 20.4 °C 44 % 54 km/h 2.2 mm Very low 5

Before and after, from space

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

Before · 18 Mar 2024
After · 15 Apr 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 March 2024 the air beside the fire reached 46 µg/m³ of PM2.5. That day averaged 30: 2.0 times the WHO daily guideline (15).

PM2.5 peak46 µg/m³
Days over the guideline13 days
PM1067 µg/m³
Optical depth1.34
2324252627282930311234567891011
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 · 797Every 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 Mexico ›

Frequently asked questions

How long did the Chanal fire last?
GWIS (Copernicus) dates it between 25 March 2024 and 8 April 2024: 15 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 9,107 hectares (91.1 km²). It is an estimate: official national figures may differ.
Which municipalities burned?
The fire only entered Chanal (9,158 ha, 22 %).
What was the weather like?
During the fire the temperature reached 26.3 °C, humidity dropped to 21 % and gusts hit 58 km/h. The fire danger index (FWI) reached 24, class High.
Where does this data come from?
From the GWIS (Copernicus) burnt perimeter, NASA FIRMS VIIRS hotspots and the administrative boundaries of Mexico (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: 911

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 911.

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 4.0 (CC BY 4.0)). 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.