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Mirninsky Ulus fire, 22 June 2021 Mirninsky Ulus, Suntarsky Ulus

Out · last detection 13 Aug 2021, 06:04 UTC

The fire started on 22 June 2021 in Mirninsky Ulus, Russia, and satellites saw it burning for 53 days. Copernicus’s global GWIS system rebuilt a burnt perimeter of 265,305 hectares from heat detections, spread across 2 municipalities.

This page is probably a fire complex, not a single fire. GWIS merges into one perimeter the fires that touch over weeks, which in large burning seasons can join dozens of separate fires. The total area is reliable; the origin and dates refer to the whole complex.

Other fire pages in the same area and on the same dates:

It is the 4th largest in Sakha Republic since 2016 (of 1422 with a page). Number 2 in Russia in 2021, of 581.

Compare with…

Suggestions: Mirninsky Ulus · 2021Mirninsky Ulus · 2021Mirninsky Ulus · 2022

Burnt area
265,305ha
GWIS perimeter (Copernicus)
Duration
53days
22 Jun 2021 – 13 Aug 2021
Municipalities hit
2
districts
Started on
22 Jun
2021
Heat detections
40,259
in a single hotspot: 1,376 MW
Danger at start
22
High · FWI index
Average daily power
11.7GW
detected power per day, on average

Where it burned

HOTSPOTS BY DAY 22 Jun13 Aug
13 Aug 2021

How it evolved, day by day

22 Jun 2021 · 189 MW · 7 23 Jun 2021 · 936 MW · 27 24 Jun 2021 · 746 MW · 45 25 Jun 2021 · 2,364 MW · 217 26 Jun 2021 · 2,172 MW · 241 27 Jun 2021 · 1,305 MW · 100 28 Jun 2021 · 7,917 MW · 350 29 Jun 2021 · 662 MW · 86 30 Jun 2021 · 292 MW · 49 1 Jul 2021 · 245 MW · 43 2 Jul 2021 · 342 MW · 77 3 Jul 2021 · 3 MW · 1 4 Jul 2021 · 63 MW · 22 5 Jul 2021 · 453 MW · 61 6 Jul 2021 · 796 MW · 173 7 Jul 2021 · 25,633 MW · 877 8 Jul 2021 · 95 MW · 55 9 Jul 2021 · 2 MW · 1 10 Jul 2021 · 59 MW · 9 11 Jul 2021 · 385 MW · 123 12 Jul 2021 · 811 MW · 191 13 Jul 2021 · 1,631 MW · 180 14 Jul 2021 · 7,805 MW · 856 15 Jul 2021 · 3,631 MW · 647 16 Jul 2021 · 11,631 MW · 1061 17 Jul 2021 · 228 MW · 154 18 Jul 2021 · 1,051 MW · 32 19 Jul 2021 · 8 MW · 3 20 Jul 2021 · 117 MW · 48 21 Jul 2021 · 2 MW · 3 22 Jul 2021 · 509 MW · 40 23 Jul 2021 · 1,544 MW · 150 24 Jul 2021 · 2,915 MW · 726 25 Jul 2021 · 9,045 MW · 1354 26 Jul 2021 · 23,276 MW · 1827 27 Jul 2021 · 29,872 MW · 2353 28 Jul 2021 · 45,771 MW · 2479 29 Jul 2021 · 83,832 MW · 5355 30 Jul 2021 · 186,012 MW · 6058 31 Jul 2021 · 52,870 MW · 3305 1 Aug 2021 · 20,470 MW · 2296 2 Aug 2021 · 43,414 MW · 3079 3 Aug 2021 · 2,585 MW · 289 4 Aug 2021 · 2,026 MW · 1043 5 Aug 2021 · 2,905 MW · 825 6 Aug 2021 · 25,094 MW · 2548 7 Aug 2021 · 3,898 MW · 501 8 Aug 2021 · 4 MW · 1 10 Aug 2021 · 9 MW · 6 11 Aug 2021 · 35 MW · 17 12 Aug 2021 · 915 MW · 183 13 Aug 2021 · 706 MW · 85
22 Jun 30 Jun 8 Jul 16 Jul 24 Jul 30 Jul 1 Aug 10 Aug

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

The weather it burned in

32°high
59km/h · peak gust
27%lowest humidity

It had gone 7 days without rain (1 mm or more) when it started. Rain came after the fire: 12.0 mm on 14 Aug.

This area had burned before

No earlier perimeters overlap this fire since 2016, when the satellite record begins.

How big is it?

20 km
It burned the equivalent of 1.7 times the area of London (2,653 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. Mirninsky Ulus where it started
    258,966 ha reached on 22 Jun
    1.6 %
  2. Suntarsky Ulus
    99 ha reached on 7 Jul
    0.0 %

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 2020
Built-up area< 0.1 ha
Residents< 20

Inside the perimeter there was no noticeable built-up land and almost nobody lived there (GHSL 2020, 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.

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)

Day High Min. humidity Peak gust Rain Danger (FWI)
22 Jun 30.0 °C 30 % 27 km/h 0.8 mm High 22
23 Jun 30.9 °C 33 % 24 km/h 0.0 mm High 22
24 Jun 28.9 °C 40 % 25 km/h 0.0 mm High 24
25 Jun 28.0 °C 36 % 22 km/h 0.0 mm High 25
26 Jun 27.1 °C 36 % 32 km/h 0.4 mm High 25
27 Jun 25.5 °C 44 % 38 km/h 0.1 mm High 25
28 Jun 23.3 °C 33 % 38 km/h 0.0 mm High 25
29 Jun 22.9 °C 35 % 38 km/h 0.1 mm High 26
30 Jun 24.8 °C 33 % 16 km/h 0.0 mm High 22
1 Jul 25.8 °C 55 % 33 km/h 2.8 mm Low 6
2 Jul 26.8 °C 50 % 26 km/h 0.5 mm Moderate 11
3 Jul 23.4 °C 46 % 25 km/h 0.4 mm Moderate 16
4 Jul 22.1 °C 47 % 31 km/h 3.7 mm Very low 4
5 Jul 25.0 °C 40 % 30 km/h 0.0 mm Low 10
6 Jul 28.9 °C 33 % 29 km/h 0.0 mm Moderate 21
7 Jul 32.2 °C 30 % 40 km/h 0.0 mm High 27
8 Jul 28.0 °C 51 % 47 km/h 2.6 mm Low 8
9 Jul 20.2 °C 67 % 59 km/h 0.0 mm Moderate 13
10 Jul 17.5 °C 45 % 24 km/h 0.0 mm Low 11
11 Jul 23.9 °C 36 % 30 km/h 0.0 mm Moderate 18
12 Jul 25.9 °C 33 % 20 km/h 0.0 mm Moderate 21
13 Jul 24.9 °C 45 % 42 km/h 1.3 mm Moderate 12
14 Jul 25.6 °C 37 % 35 km/h 0.0 mm High 22
15 Jul 19.7 °C 43 % 39 km/h 0.0 mm High 22
16 Jul 23.9 °C 29 % 22 km/h 0.0 mm High 22
17 Jul 26.6 °C 44 % 34 km/h 0.6 mm Moderate 20
18 Jul 27.6 °C 45 % 47 km/h 1.0 mm Moderate 18
19 Jul 25.0 °C 37 % 46 km/h 0.0 mm High 25
20 Jul 25.2 °C 38 % 17 km/h 0.0 mm High 22
21 Jul 23.7 °C 53 % 38 km/h 2.8 mm Low 6
22 Jul 25.6 °C 38 % 27 km/h 0.6 mm Moderate 12
23 Jul 25.5 °C 45 % 20 km/h 0.0 mm Moderate 15
24 Jul 27.9 °C 32 % 33 km/h 0.0 mm High 24
25 Jul 30.4 °C 32 % 22 km/h 0.0 mm High 26
26 Jul 32.2 °C 28 % 26 km/h 0.0 mm High 29
27 Jul 31.7 °C 34 % 19 km/h 0.0 mm High 28
28 Jul 29.9 °C 42 % 28 km/h 0.0 mm High 27
29 Jul 26.5 °C 31 % 32 km/h 0.0 mm High 28
30 Jul 24.1 °C 30 % 31 km/h 0.0 mm High 28
31 Jul 24.3 °C 33 % 30 km/h 0.0 mm High 27
1 Aug 23.9 °C 36 % 30 km/h 0.0 mm High 28
2 Aug 28.0 °C 35 % 42 km/h 0.0 mm High 32
3 Aug 26.3 °C 31 % 44 km/h 0.0 mm High 33
4 Aug 26.0 °C 34 % 54 km/h 0.0 mm High 37
5 Aug 26.3 °C 27 % 46 km/h 0.0 mm High 34
6 Aug 21.3 °C 38 % 37 km/h 0.0 mm High 29
7 Aug 21.2 °C 44 % 31 km/h 0.0 mm High 25
8 Aug 19.5 °C 59 % 24 km/h 2.6 mm Very low 5
9 Aug 14.0 °C 83 % 16 km/h 8.2 mm Very low 0
10 Aug 22.4 °C 50 % 27 km/h 0.0 mm Very low 3
11 Aug 22.3 °C 60 % 30 km/h 0.0 mm Very low 5
12 Aug 23.8 °C 50 % 20 km/h 0.0 mm Low 10
13 Aug 26.1 °C 44 % 18 km/h 0.0 mm Moderate 15
14 Aug after 21.4 °C 65 % 35 km/h 12.0 mm Very low 0

Before and after, from space

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

Before · 15 Jun 2021
After · 20 Aug 2021

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 · 40,259Every 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 Russia ›

Frequently asked questions

How long did the Mirninsky Ulus fire last?
According to the heat detections seen by satellite inside the perimeter, it burned from 22 June 2021 to 13 August 2021 (53 days). The perimeter dates it from 22 June 2021 to 8 August 2021.
How much area did it burn?
The perimeter GWIS (Copernicus) rebuilt from heat detections is 265,305 hectares (2,653.0 km²). It is an estimate: official national figures may differ.
Which municipalities burned?
The fire entered 2 municipalities: Mirninsky Ulus (258,966 ha, 1.6 %); Suntarsky Ulus (99 ha, 0.0 %).
What was the weather like?
During the fire the temperature reached 32.2 °C, humidity dropped to 27 % and gusts hit 59 km/h. The fire danger index (FWI) reached 37, class High.
Where does this data come from?
From the GWIS (Copernicus) burnt perimeter, NASA FIRMS VIIRS hotspots and the administrative boundaries of Russia (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: 112 · 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

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 112.

How we know this
  • Perimeter: GWIS (Copernicus), rebuilt from heat detections rather than mapped on imagery; 2 polygons grouped in this page.
  • Dates adjusted with the VIIRS detections inside the perimeter, which said 22 June 2021 to 8 August 2021. 40,259 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 2020, 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 (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.