Burned area
satellite only2,675ha
Perimeter published by GWIS (Copernicus).
- Source
- GWIS (Copernicus)
- Date
- 22 Apr 2024 – 5 May 2024
+− cross-check
No official record is matched to this page to compare it with.
MX · Mexico · –
Del Nayar fire, 22 April 2024 Del Nayar, Mezquital
Out · last detection 5 May 2024, 19:51 UTC
The fire started on 22 April 2024 in Del Nayar, Mexico, and satellites saw it burning for 14 days. Copernicus’s global GWIS system rebuilt a burnt perimeter of 2,675 hectares from heat detections, spread across 2 municipalities.
It is the 70th largest in Nayarit since 2016 (of 171 with a page). Number 125 in Mexico in 2024, of 289.
The power measured by the satellite is low (12.7 MW in the strongest hotspot), more typical of grass or stubble burning, or a slow surface fire, than of a large crown fire.
Use this data
Compare with…
Use this data
Fire page data · version 2026-10-24matches the official recordwith caveatssatellite onlymodel
When copying, the sentence is
Tick the figures you want: they make up the lede and the CSV.
Duration by satellite
satellite only14days
22 Apr 2024 to 5 May 2024: first and last day with fire on the page.
- Source
- GWIS (Copernicus) · NASA FIRMS · VIIRS
- Date
- last detection: 5 May 2024, 19:51 UTC
+− cross-check
Satellites pass a few times a day and cloud or smoke can hide the fire: a lack of detections is not an official extinction. Each country’s emergency service declares a fire contained or out.
Start
satellite only22 Apr 2024
First day with fire seen by the satellites or the perimeter.
- Source
- GWIS (Copernicus) · NASA FIRMS · VIIRS
- Date
- 22 Apr 2024
+− cross-check
No official record is matched to this page, so the alert time and the cause are not known here.
Hotspots
satellite only118
VIIRS detections at 375 m. Most intense hotspot: 13 MW.
- Source
- NASA FIRMS · VIIRS (Suomi NPP)
- Date
- 22 Apr 2024 – 5 May 2024
+− cross-check
There is no official record to compare with. Each hotspot is a pixel detected in one satellite pass, not a separate fire.
The worst day
satellite only133MW
Total radiative power on 22 April 2024; hotspots that day: 21.
- Source
- NASA FIRMS · VIIRS (FRP)
- Date
- 22 Apr 2024
+− cross-check
Fire radiative power (FRP) measures the energy the fire gives off when the satellite passes. Added up by day, it compares intensity, not area.
Danger at the start
model57.9FWI · extreme
Fire Weather Index (Canadian system) computed by WorldFires for the day the fire started. Consecutive days without rain before: 60.
- Source
- WorldFires calculation (Canadian FWI system)
- Date
- 22 Apr 2024, local noon
- Model
- ERA5 0,25° (ECMWF · Copernicus C3S) · Open-Meteo.com
+− cross-check
This is an index computed from weather model data, not a measurement of the fire nor an official warning. Danger warnings are issued by each country’s authority. Emergency number and official warnings
Weather during the fire
model33.5°C · 18% RH
High of 33.5 °C and minimum humidity of 18% on 5 May 2024; gusts of 52 km/h on 25 April 2024.
- Source
- weather model at the fire’s grid cell
- Date
- 22 Apr 2024 – 5 May 2024
- Model
- ERA5 0,25° (ECMWF · Copernicus C3S) · Open-Meteo.com
+− cross-check
These are model values for a cell of about 25 km, not from a weather station: they may differ from what was measured on the ground.
This page’s change log has been kept since 24 October 2026: every night what it publishes is compared and the difference is logged. Anything earlier is reconstructed from each source’s date and marked as reconstructed.
Show
-
· reconstructed weatherWeather and FWI computed from the ERA5 reanalysis
-
· reconstructed GHSLPopulation and built-up area computed
What was saved on 24 October 2026
Every night a snapshot of what the page shows is saved. If anything changes, it appears in the list as a log entry.
- Area
- 2,675 ha
- Dates
- 22 Apr 2024 – 5 May 2024
- Name
- Del Nayar
- Official record
- —
Versioned permanent link
https://worldfires.org/en/fire/del-nayar-2024-04-2?v=2026-10-24A version keeps the area, dates, name and official record; the area as it was logged (changes under 2% are not logged). The map, hotspots and weather always show today’s data.
Citation
A lede of about 60 words figures only, no adjectives
CSV for this fire del-nayar-2024-04-2.csv · daily, no individual hotspots
| fecha | focos_viirs | frp_mw | tmax_c | tmin_c | hr_min_pct | viento_max_kmh | racha_max_kmh | precip_mm | fwi | clase_fwi | dentro_del_incendio |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 2024-04-22 | 21 | 133 | 32.1 | 9.1 | 11 | 13.7 | 49.3 | 0 | 57.9 | extremo | 1 |
| 2024-04-23 | 24 | 104 | 31.7 | 10.2 | 17 | 13.6 | 48.6 | 0 | 58.3 | extremo | 1 |
| 2024-04-24 | 11 | 14 | 32.1 | 10.1 | 16 | 14 | 49.7 | 0 | 58 | extremo | 1 |
| 2024-04-25 | 20 | 57 | 31.1 | 10.9 | 19 | 14.2 | 51.5 | 0 | 58.8 | extremo | 1 |
| 2024-04-26 | 1 | 2 | 28.8 | 12.6 | 24 | 14 | 51.5 | 0 | 56.2 | extremo | 1 |
| 2024-04-27 | 2 | 4 | 28.8 | 9.2 | 17 | 13.9 | 50.4 | 0 | 54.8 | extremo | 1 |
| 2024-04-28 | 1 | 1 | 29.5 | 6.5 | 12 | 13.5 | 48.6 | 0 | 55 | extremo | 1 |
| 2024-04-29 | 12 | 34 | 30.5 | 8.4 | 18 | 12.3 | 43.2 | 0 | 50.9 | extremo | 1 |
| 2024-04-30 | 23 | 37 | 31 | 8 | 16 | 11.9 | 43.9 | 0 | 52.2 | extremo | 1 |
| 2024-05-01 | 0 | 0 | 29.4 | 12.6 | 17 | 10.8 | 42.1 | 0 | 52.9 | extremo | 1 |
| 2024-05-02 | 0 | 0 | 30.7 | 10.5 | 18 | 10.8 | 40.7 | 0 | 51.9 | extremo | 1 |
| 2024-05-03 | 1 | 1 | 32.3 | 11.1 | 16 | 10.6 | 40.3 | 0 | 54.3 | extremo | 1 |
| 2024-05-04 | 0 | 0 | 31.1 | 11.7 | 21 | 10.8 | 40.7 | 0 | 54.4 | extremo | 1 |
| 2024-05-05 | 2 | 8 | 33.5 | 11.5 | 18 | 12.1 | 42.1 | 0 | 54.2 | extremo | 1 |
| 2024-05-06 | 0 | 0 | 30.2 | 14.5 | 20 | 9.5 | 36 | 0 | 53.1 | extremo | 0 |
| 2024-05-07 | 0 | 0 | 30.6 | 13.9 | 19 | 9 | 34.9 | 0 | 51.3 | extremo | 0 |
| 2024-05-08 | 0 | 0 | 34.5 | 13.9 | 18 | 12.6 | 46.8 | 0 | 56.5 | extremo | 0 |
| 2024-05-09 | 0 | 0 | 35.2 | 13.9 | 17 | 11.5 | 41 | 0 | 54.6 | extremo | 0 |
| 2024-05-10 | 0 | 0 | 35.5 | 14 | 18 | 11.6 | 43.2 | 0 | 53.8 | extremo | 0 |
| 2024-05-11 | 0 | 0 | 33.2 | 14.3 | 26 | 11.1 | 41.4 | 0 | 51.1 | extremo | 0 |
| 2024-05-12 | 0 | 0 | 30.7 | 13.1 | 27 | 13 | 47.9 | 0 | 48 | muy_alto | 0 |
| 2024-05-13 | 0 | 0 | 30.1 | 12.7 | 22 | 12.1 | 44.6 | 0 | 48.8 | muy_alto | 0 |
| 2024-05-14 | 0 | 0 | 30.8 | 10.4 | 17 | 10.9 | 41.4 | 0 | 50.2 | extremo | 0 |
| 2024-05-15 | 0 | 0 | 31 | 12.2 | 28 | 13 | 48.2 | 0 | 48.2 | muy_alto | 0 |
It is generated in your browser from this page’s data: one file per fire, aggregated by day and without individual hotspots.
Live widget for your story
It updates itself while the fire is still active and links to this page. Free, with the attribution shown at the bottom.
Sources for this page: GWIS (Copernicus), NASA FIRMS (VIIRS), ERA5 (ECMWF/Copernicus C3S) · Open-Meteo.com (CC BY 4.0), GHSL (JRC). Open-Meteo.com · How we build fire pages: methodology
- Burnt area
- 2,675ha
- GWIS perimeter (Copernicus)
- Duration
- 14days
- 22 Apr 2024 – 5 May 2024
- Municipalities hit
- 2
- municipalities
- Started on
- 22 Apr
- 2024
- Heat detections
- 118
- in a single hotspot: 13 MW
- Danger at start
- 58
- Extreme · FWI index
- Average daily power
- 36MW
- detected power per day, on average
Where it burned
HOTSPOTS BY DAY
22 Apr5 May
5 May 2024
How it evolved, day by day
22 Apr
25 Apr
28 Apr
3 May
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
52km/h · peak gust
11%lowest humidity
It had gone more than two months without rain (1 mm or more) when it started.
This area had burned before
98% of the perimeter overlaps earlier fires recorded since 2016: 2,161 ha in 2017, 44 ha in 2018, 1,666 ha in 2019, 2,558 ha in 2022. Part of it burned more than once, so the yearly figures add up to more than the 2,626 ha that had burned before.
- 2,558 ha Mezquital fire, April 2022 20,388 ha in total; the hectares shown are those it shares with this fire
- 1,666 ha Del Nayar fire, May 2019 14,907 ha in total; the hectares shown are those it shares with this fire
- 44 ha Mezquital fire, April 2018 3,819 ha in total; the hectares shown are those it shares with this fire
- 5 ha Del Nayar fire, May 2017 2,649 ha in total; the hectares shown are those it shares with this fire
How big is it?
London boundary: geoBoundaries · Office for National Statistics (Open Government Licence v3.0).
Paris boundary: geoBoundaries · Institut national de l'information géographique et forestière (IGN-F) (Etalab Open License 2.0).
Madrid boundary: geoBoundaries · Open Data ESRI, IGN Central Registry of Cartography Area (CC BY 4.0).
Berlin boundary: geoBoundaries · Federal Agency for Cartography and Geodesy (dl-de/by-2-0).
This compares size, not location: both shapes are at the same scale, north up, centred on each other.
What happened to each town
-
Del Nayar where it started2,623 ha reached on 22 Apr0.5 %
-
70 ha reached on 23 Apr0.0 %
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 2025Built-up area< 0.1 ha
Residents< 20
Inside the perimeter there was no noticeable built-up land and almost nobody lived there (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
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 Very dry air: 21 % of the area in Mexico 60 days without rain: 25 % of the area in Mexico
| Day | High | Min. humidity | Peak gust | Rain | Danger (FWI) |
|---|---|---|---|---|---|
| 22 Apr | 32.1 °C | 11 % | 49 km/h | 0.0 mm | Extreme 58 |
| 23 Apr | 31.7 °C | 17 % | 49 km/h | 0.0 mm | Extreme 58 |
| 24 Apr | 32.1 °C | 16 % | 50 km/h | 0.0 mm | Extreme 58 |
| 25 Apr | 31.1 °C | 19 % | 52 km/h | 0.0 mm | Extreme 59 |
| 26 Apr | 28.8 °C | 24 % | 52 km/h | 0.0 mm | Extreme 56 |
| 27 Apr | 28.8 °C | 17 % | 50 km/h | 0.0 mm | Extreme 55 |
| 28 Apr | 29.5 °C | 12 % | 49 km/h | 0.0 mm | Extreme 55 |
| 29 Apr | 30.5 °C | 18 % | 43 km/h | 0.0 mm | Extreme 51 |
| 30 Apr | 31.0 °C | 16 % | 44 km/h | 0.0 mm | Extreme 52 |
| 1 May | 29.4 °C | 17 % | 42 km/h | 0.0 mm | Extreme 53 |
| 2 May | 30.7 °C | 18 % | 41 km/h | 0.0 mm | Extreme 52 |
| 3 May | 32.3 °C | 16 % | 40 km/h | 0.0 mm | Extreme 54 |
| 4 May | 31.1 °C | 21 % | 41 km/h | 0.0 mm | Extreme 54 |
| 5 May | 33.5 °C | 18 % | 42 km/h | 0.0 mm | Extreme 54 |
| 6 May after | 30.2 °C | 20 % | 36 km/h | 0.0 mm | Extreme 53 |
| 7 May after | 30.6 °C | 19 % | 35 km/h | 0.0 mm | Extreme 51 |
| 8 May after | 34.5 °C | 18 % | 47 km/h | 0.0 mm | Extreme 56 |
| 9 May after | 35.2 °C | 17 % | 41 km/h | 0.0 mm | Extreme 55 |
| 10 May after | 35.5 °C | 18 % | 43 km/h | 0.0 mm | Extreme 54 |
| 11 May after | 33.2 °C | 26 % | 41 km/h | 0.0 mm | Extreme 51 |
| 12 May after | 30.7 °C | 27 % | 48 km/h | 0.0 mm | Very high 48 |
| 13 May after | 30.1 °C | 22 % | 45 km/h | 0.0 mm | Very high 49 |
| 14 May after | 30.8 °C | 17 % | 41 km/h | 0.0 mm | Extreme 50 |
| 15 May after | 31.0 °C | 28 % | 48 km/h | 0.0 mm | Very high 48 |
Its twins: fires that started in the same weather
It started with an FWI of 57.9, a minimum humidity of 11% and more than two months without rain. Fires in the area that started in weather like this since 2016: 17.
FWI at the start
57.9
Minimum humidity
11 %
Days without rain
60+
this fire
chosen twins
rest of the area
Almost identicalSimilar
Outlines of the closest twins
This fire · Del Nayar fire, 22 April 2024
2,675 ha
14 days
FWI 57.9
Min. humidity 11 %
Mezquital fire, May 2019
2,187 ha
11 days
FWI 60.6
Min. humidity 11 %
50 km away, in 2019
First rain (1 mm or more) after it ended: 2.2 mm on 27 May.
Monte Escobedo fire, April 2025
3,622 ha
10 days
FWI 56.8
Min. humidity 10 %
125 km away, in 2025
First rain (1 mm or more) after it ended: none in the following ten days.
Mezquital fire, May 2019
3,536 ha
11 days
FWI 52.4
Min. humidity 11 %
23 km away, in 2019
First rain (1 mm or more) after it ended: 2.1 mm on 27 May.
Mezquitic fire, May 2023
1,512 ha
5 days
FWI 53.7
Min. humidity 12 %
44 km away, in 2023
First rain (1 mm or more) after it ended: none in the following ten days.
Villa Guerrero fire, May 2019
1,707 ha
7 days
FWI 56.9
Min. humidity 8 %
90 km away, in 2019
First rain (1 mm or more) after it ended: none in the following ten days.
What happened to them
- 11 days
- median duration
- 2,861 ha
- median area
- 100 %
- went past 1,000 ha
- 1.8 mm
- rain at the end (median; 10 of 17 had it)
It burned an area similar to its twins (2,675 ha against a median of 2,861 ha) and lasted 14 days, against 11 days.
In 7 of 17, 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 1.8 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
52km/h · max. gust
It was considered over on 5 May, and not even 1 mm fell in the following ten days: it went out without rain. Twins with rain when they ended: 10 of 17, with a median of 1.8 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.
Before and after, from space
Drag the line to compare the same ground before the fire and after it.
↔
Before · 15 Apr 2024
After · 12 May 2024
Sentinel-2 did not pass over on that day. Try another date, or use false colour, which is daily.
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 · CopernicusOn 26 April 2024 the air beside the fire reached 12 µg/m³ of PM2.5, but no daily average passed the WHO guideline (15).
PM2.5 peak12 µg/m³
Days over the guideline0 days
PM1018 µg/m³
Optical depth0.18
20 Apr23 Apr26 Apr29 Apr2 May
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 · 118Every 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 time | Satellite | FRP (MW) | Lat | Lon |
|---|
Other fires nearby
- 6,298 haDel Nayar1 April 2017 · 18 days · 2 km away
- 20,388 haMezquital8 April 2022 · 31 days · 7 km away
- 14,907 haDel Nayar16 May 2019 · 24 days · 8 km away
- 6,298 haMezquital5 May 2023 · 14 days · 27 km away
- 6,481 haMezquital3 April 2017 · 20 days · 29 km away
- 10,927 haDel NayarApril 2019 · 25 days · 30 km away
Frequently asked questions
- How long did the Del Nayar fire last?
- According to the heat detections seen by satellite inside the perimeter, it burned from 22 April 2024 to 5 May 2024 (14 days). The perimeter dates it from 22 April 2024 to 30 April 2024.
- How much area did it burn?
- The perimeter GWIS (Copernicus) rebuilt from heat detections is 2,675 hectares (26.8 km²). It is an estimate: official national figures may differ.
- Which municipalities burned?
- The fire entered 2 municipalities: Del Nayar (2,623 ha, 0.5 %); Mezquital (70 ha, 0.0 %).
- What was the weather like?
- During the fire the temperature reached 33.5 °C, humidity dropped to 11 % and gusts hit 52 km/h. The fire danger index (FWI) reached 59, 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: 17. Their median duration was 11 days and their median area 2,861 ha; 100 % went past 1,000 ha. In 7 of 17, 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 1.8 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.
No changes since 24 October 2026.
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.
Report an error
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 22 April 2024 to 30 April 2024. 118 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 2025, 100 m cells), summed inside the perimeter: an estimate of what was there, not a damage count.
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.