How long did the Tomponsky Ulus fire last?

According to the heat detections seen by satellite inside the perimeter, it burned from 29 July 2021 to 11 August 2021 (14 days). The perimeter dates it from 2 August 2021 to 11 August 2021.

How much area did it burn?

The perimeter GWIS (Copernicus) rebuilt from heat detections is 5,736 hectares (57.4 km²). It is an estimate: official national figures may differ.

Which municipalities burned?

The fire entered 2 municipalities: Tomponsky Ulus (5,326 ha, 0.0 %); Tattinsky Ulus (181 ha, 0.0 %).

What was the weather like?

During the fire the temperature reached 29.7 °C, humidity dropped to 18 % and gusts hit 45 km/h. The fire danger index (FWI) reached 28, 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.

RU · Russia · 2021-07-29 → 2021-08-11

Tomponsky Ulus fire, 29 July 2021 Tomponsky Ulus, Tattinsky Ulus

Out · last detection 11 Aug 2021, 17:07 UTC

The fire started on 29 July 2021 in Tomponsky Ulus, Russia, and satellites saw it burning for 14 days. Copernicus’s global GWIS system rebuilt a burnt perimeter of 5,736 hectares from heat detections, spread across 2 municipalities.

It is the 832th largest in Sakha Republic since 2016 (of 1422 with a page). Number 310 in Russia in 2021, of 581.

Compare with…

Suggestions: Tattinsky Ulus · 2021 Tattinsky Ulus · 2026 Tomponsky Ulus · 2021 Tattinsky Ulus · 2021

Burnt area: 5,736ha; GWIS perimeter (Copernicus)
Duration: 14days; 29 Jul 2021 – 11 Aug 2021
Municipalities hit: 2; districts
Started on: 29 Jul; 2021
Heat detections: 844; in a single hotspot: 215 MW
Danger at start: 18; Moderate · FWI index
Average daily power: 986MW; detected power per day, on average

HOTSPOTS BY DAY 29 Jul11 Aug

Play back 11 Aug 2021

How it evolved, day by day

29 Jul 2 Aug 5 Aug 7 Aug 9 Aug 11 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

30°high

45km/h · peak gust

18%lowest humidity

It had gone 3 days without rain (1 mm or more) when it started. Rain came after the fire: 3.2 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?

It burned the equivalent of 3.6% of the area of London (57 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

Tomponsky Ulus where it started

5,326 ha reached on 29 Jul

0.0 %
Tattinsky Ulus

181 ha reached on 11 Aug

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.

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)
29 Jul	23.3 °C	24 %	45 km/h	0.0 mm	Moderate 18
30 Jul	23.7 °C	34 %	24 km/h	0.0 mm	Moderate 16
31 Jul	25.1 °C	27 %	20 km/h	0.0 mm	Moderate 16
1 Aug	29.6 °C	31 %	27 km/h	0.0 mm	Moderate 19
2 Aug	28.6 °C	18 %	38 km/h	0.0 mm	High 25
3 Aug	26.5 °C	30 %	29 km/h	0.0 mm	High 21
4 Aug	27.5 °C	25 %	22 km/h	0.0 mm	High 22
5 Aug	25.7 °C	20 %	39 km/h	0.0 mm	High 27
6 Aug	26.0 °C	30 %	33 km/h	0.0 mm	High 24
7 Aug	25.9 °C	29 %	45 km/h	0.0 mm	High 28
8 Aug	25.5 °C	21 %	33 km/h	0.0 mm	High 26
9 Aug	28.2 °C	25 %	21 km/h	0.0 mm	High 24
10 Aug	29.7 °C	20 %	30 km/h	0.0 mm	High 28
11 Aug	27.4 °C	34 %	18 km/h	0.0 mm	High 25
12 Aug after	23.2 °C	51 %	23 km/h	0.9 mm	Moderate 12
13 Aug after	24.2 °C	55 %	19 km/h	0.0 mm	Moderate 12
14 Aug after	24.7 °C	50 %	23 km/h	3.2 mm	Very low 4

Before and after, from space

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

↔

Before · 22 Jul 2021

After · 18 Aug 2021

Before After

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 · 844Every 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

All fires in Russia ›

Frequently asked questions

How long did the Tomponsky Ulus fire last?: According to the heat detections seen by satellite inside the perimeter, it burned from 29 July 2021 to 11 August 2021 (14 days). The perimeter dates it from 2 August 2021 to 11 August 2021.
How much area did it burn?: The perimeter GWIS (Copernicus) rebuilt from heat detections is 5,736 hectares (57.4 km²). It is an estimate: official national figures may differ.
Which municipalities burned?: The fire entered 2 municipalities: Tomponsky Ulus (5,326 ha, 0.0 %); Tattinsky Ulus (181 ha, 0.0 %).
What was the weather like?: During the fire the temperature reached 29.7 °C, humidity dropped to 18 % and gusts hit 45 km/h. The fire danger index (FWI) reached 28, 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

NASA FIRMS ↗
GWIS · Copernicus ↗

History of this page · 1 Changes in area, dates, name, official record or merged pages, compared every night since 24 October 2026.

25 October 2026 Start date: 2 August 2021 → 29 July 2021.

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?

Dates or duration Place or towns Burned area Name It was not a wildfire Same fire as another page Something else

What really happened?

Your connection to the fire (optional) Email (optional)

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.
Dates adjusted with the VIIRS detections inside the perimeter, which said 2 August 2021 to 11 August 2021. 844 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.

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.

Where it burned