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MX · Mexico · –

Mezquitic fire, 24 April 2023 Bolaños, Mezquitic

Out · last detection 28 Apr 2023, 19:46 UTC

The fire started on 24 April 2023 in Mezquitic, Mexico, and satellites saw it burning for 5 days. Copernicus’s global GWIS system rebuilt a burnt perimeter of 3,017 hectares from heat detections, spread across 2 municipalities. According to CONAFOR, it was detected on 24 April 2023 and declared extinguished on 29 April 2023.

It is the 80th largest in Jalisco since 2016 (of 267 with a page). Number 102 in Mexico in 2023, of 285.

Burnt area
3,017ha
GWIS perimeter (Copernicus)
Duration
5days
24 Apr 2023 – 28 Apr 2023
Municipalities hit
2
municipalities
Started on
24 Apr
2023
Heat detections
111
in a single hotspot: 170 MW
Danger at start
57
Extreme · FWI index
Average daily power
461MW
detected power per day, on average

Where it burned

HOTSPOTS BY DAY 24 Apr28 Apr
28 Apr 2023

How it evolved, day by day

24 Apr 2023 · 91 MW · 8 25 Apr 2023 · 1,914 MW · 63 26 Apr 2023 · 32 MW · 11 27 Apr 2023 · 181 MW · 19 28 Apr 2023 · 88 MW · 10
24 Apr 25 Apr 26 Apr 27 Apr 28 Apr

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

The weather it burned in

31°high
60km/h · peak gust
10%lowest humidity

It had gone 12 days without rain (1 mm or more) when it started.

This area had burned before

96% of the perimeter overlaps earlier fires recorded since 2016: 2,614 ha in 2017, 445 ha in 2019, 1,305 ha in 2021. Part of it burned more than once, so the yearly figures add up to more than the 2,888 ha that had burned before.

How big is it?

10 km
It burned the equivalent of 1.9% of the area of London (30 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. 2,020 ha reached on 25 Apr
    2.3 %
  2. Mezquitic where it started
    1,008 ha reached on 24 Apr
    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 2025
Built-up area0.25 ha
Residents≈ 40

Inside the perimeter there were about 0.25 hectares of built-up land and about 40 residents (GHSL 2025, 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. The GHSL 2025 epoch is a projection made from 2020 and earlier data.

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

Official record

According to CONAFOR, this fire started on 24 April 2023 and burned 2,567 ha (the satellite measured 3,017 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)

Started with Extreme FWI: 19 % of the area in Mexico Strong wind: 19 % of the area in Mexico Very dry air: 21 % of the area in Mexico

Day High Min. humidity Peak gust Rain Danger (FWI)
24 Apr 30.0 °C 10 % 59 km/h 0.0 mm Extreme 57
25 Apr 29.6 °C 11 % 53 km/h 0.0 mm Extreme 55
26 Apr 28.8 °C 14 % 44 km/h 0.0 mm Extreme 51
27 Apr 30.7 °C 13 % 59 km/h 0.0 mm Extreme 54
28 Apr 29.6 °C 11 % 60 km/h 0.0 mm Extreme 58
29 Apr after 32.9 °C 10 % 41 km/h 0.0 mm Extreme 54
30 Apr after 32.8 °C 12 % 44 km/h 0.0 mm Very high 49
1 May after 28.2 °C 15 % 52 km/h 0.0 mm Extreme 57
2 May after 30.0 °C 14 % 46 km/h 0.0 mm Extreme 52
3 May after 33.3 °C 11 % 50 km/h 0.0 mm Very high 50
4 May after 31.5 °C 16 % 54 km/h 0.0 mm Extreme 55
5 May after 33.3 °C 16 % 50 km/h 0.1 mm Very high 48
6 May after 34.2 °C 18 % 49 km/h 0.1 mm Very high 48
7 May after 33.0 °C 22 % 49 km/h 0.8 mm Very high 49
8 May after 31.7 °C 19 % 57 km/h 0.4 mm Very high 43

Its twins: fires that started in the same weather

It started with an FWI of 57.0, a minimum humidity of 10% and 12 days without rain. Fires in the area that started in weather like this since 2016: 15.

FWI at the start 57.0
Minimum humidity 10 %
Days without rain 12
this fire chosen twins rest of the area
Almost identicalSimilar

Outlines of the closest twins

Tepechitlán fire, May 2017
2,235 ha 3 days FWI 59.4 Min. humidity 12 % 93 km away, in 2017

First rain (1 mm or more) after it ended: 1.6 mm on 26 May.

What happened to them

9 days
median duration
4,373 ha
median area
7 %
went past 10,000 ha
2.7 mm
rain at the end (median; 12 of 15 had it)

It burned an area similar to its twins (3,017 ha against a median of 4,373 ha) and lasted 5 days, against 9 days.

In 3 of 15, 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 2.7 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
60km/h · max. gust

It was considered over on 28 Apr, and not even 1 mm fell in the following ten days: it went out without rain. Twins with rain when they ended: 12 of 15, with a median of 2.7 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 · 17 Apr 2023
After · 5 May 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 29 April 2023 the air beside the fire reached 56 µg/m³ of PM2.5. That day averaged 29: 2.0 times the WHO daily guideline (15).

PM2.5 peak56 µg/m³
Days over the guideline4 days
PM1081 µg/m³
Optical depth0.46
22 Apr24 Apr26 Apr28 Apr30 Apr
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 · 111Every 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 Mezquitic fire last?
GWIS (Copernicus) dates it between 24 April 2023 and 28 April 2023: 5 days between the first and last heat detection of the perimeter. According to CONAFOR, it was detected on 24 April 2023 and declared extinguished on 29 April 2023.
How much area did it burn?
The perimeter GWIS (Copernicus) rebuilt from heat detections is 3,017 hectares (30.2 km²). It is an estimate: official national figures may differ.
Which municipalities burned?
The fire entered 2 municipalities: Bolaños (2,020 ha, 2.3 %); Mezquitic (1,008 ha, 0.3 %).
What was the weather like?
During the fire the temperature reached 30.7 °C, humidity dropped to 10 % and gusts hit 60 km/h. The fire danger index (FWI) reached 58, class Extreme.
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.
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: 15. Their median duration was 9 days and their median area 4,373 ha; 7 % went past 10,000 ha. In 3 of 15, 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 2.7 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.

Emergency number: 911 · Emergency number and official warnings

Satellite cross-check

History of this page Changes in area, dates, name, official record or merged pages, compared every night since 24 October 2026.

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.

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. 111 Suomi-NPP VIIRS detections on those dates.
  • Compared with CONAFOR: 2,567 official ha against 3,017 ha of perimeter; they agree within 25%.
  • 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 2025, 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 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.