How long did the Ust-Maysky Ulus fire last?

According to the heat detections seen by satellite inside the perimeter, it burned from 16 June 2024 to 9 July 2024 (24 days). The perimeter dates it from 17 June 2024 to 9 July 2024.

How much area did it burn?

The perimeter GWIS (Copernicus) rebuilt from heat detections is 14,465 hectares (144.6 km²). It is an estimate: official national figures may differ.

Which municipalities burned?

The fire only entered Ust-Maysky Ulus (14,047 ha, 0.2 %).

What was the weather like?

During the fire the temperature reached 30.7 °C, humidity dropped to 25 % and gusts hit 55 km/h. The fire danger index (FWI) reached 32, 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 · 2024-06-16 → 2024-07-09

Ust-Maysky Ulus fire, 16 June 2024 Ust-Maysky Ulus

Out · last detection 9 Jul 2024, 04:28 UTC

The fire started on 16 June 2024 in Ust-Maysky Ulus, Russia, and satellites saw it burning for 24 days. Copernicus’s global GWIS system rebuilt a burnt perimeter of 14,465 hectares from heat detections, spread across a single municipality.

It is the 362th largest in Sakha Republic since 2016 (of 1422 with a page). Number 102 in Russia in 2024, of 558.

Compare with…

Suggestions: Ust-Maysky Ulus · 2024 Ust-Maysky Ulus · 2020 Ust-Maysky Ulus · 2023 Ust-Maysky Ulus · 2023

Burnt area: 14,465ha; GWIS perimeter (Copernicus)
Duration: 24days; 16 Jun 2024 – 9 Jul 2024
Municipalities hit: 1; districts
Started on: 16 Jun; 2024
Heat detections: 937; in a single hotspot: 68 MW
Danger at start: 26; High · FWI index
Average daily power: 256MW; detected power per day, on average

HOTSPOTS BY DAY 16 Jun9 Jul

Play back 9 Jul 2024

How it evolved, day by day

17 Jun 21 Jun 25 Jun 2 Jul 5 Jul 8 Jul

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

55km/h · peak gust

25%lowest humidity

It had gone 7 days without rain (1 mm or more) when it started. Rain came after the fire: 4.1 mm on 10 Jul.

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 9.1% of the area of London (145 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

Ust-Maysky Ulus where it started

14,047 ha reached on 17 Jun

0.2 %

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 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)

Day	High	Min. humidity	Peak gust	Rain	Danger (FWI)
16 Jun	23.4 °C	35 %	49 km/h	0.0 mm	High 26
17 Jun	20.5 °C	37 %	43 km/h	0.0 mm	High 25
18 Jun	19.4 °C	44 %	35 km/h	0.0 mm	Moderate 20
19 Jun	14.6 °C	65 %	37 km/h	0.1 mm	Moderate 14
20 Jun	19.6 °C	48 %	32 km/h	0.1 mm	Moderate 15
21 Jun	26.2 °C	34 %	22 km/h	0.0 mm	Moderate 17
22 Jun	28.5 °C	32 %	22 km/h	0.0 mm	Moderate 21
23 Jun	27.1 °C	44 %	24 km/h	1.5 mm	Low 10
24 Jun	26.9 °C	38 %	21 km/h	1.4 mm	Low 10
25 Jun	29.2 °C	28 %	30 km/h	0.0 mm	High 24
26 Jun	28.4 °C	30 %	55 km/h	0.1 mm	High 32
27 Jun	20.2 °C	36 %	50 km/h	0.3 mm	High 29
28 Jun	12.3 °C	70 %	42 km/h	5.4 mm	Very low 0
29 Jun	17.6 °C	50 %	22 km/h	1.6 mm	Very low 3
30 Jun	24.1 °C	33 %	36 km/h	0.1 mm	Low 11
1 Jul	28.5 °C	28 %	43 km/h	0.0 mm	High 25
2 Jul	29.9 °C	45 %	42 km/h	1.0 mm	Moderate 17
3 Jul	30.7 °C	45 %	30 km/h	0.7 mm	Moderate 16
4 Jul	25.6 °C	25 %	42 km/h	0.0 mm	High 28
5 Jul	18.9 °C	42 %	48 km/h	0.1 mm	High 25
6 Jul	20.4 °C	40 %	31 km/h	0.1 mm	High 22
7 Jul	23.3 °C	41 %	18 km/h	0.0 mm	Moderate 19
8 Jul	25.3 °C	34 %	33 km/h	0.0 mm	High 23
9 Jul	24.0 °C	40 %	44 km/h	0.9 mm	Moderate 20
10 Jul after	22.3 °C	60 %	25 km/h	4.1 mm	Very low 3

Before and after, from space

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

↔

Before · 9 Jun 2024

After · 16 Jul 2024

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.

The smoke

CAMS · Copernicus

On 21 June 2024 the air beside the fire reached 151 µg/m³ of PM2.5. That day averaged 75: 5.0 times the WHO daily guideline (15).

PM2.5 peak151 µg/m³

Days over the guideline11 days

PM10216 µg/m³

Optical depth1.77

WHO 15

15161718192021222324252627282930123456789101112

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 · 937Every 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 Ust-Maysky Ulus fire last?: According to the heat detections seen by satellite inside the perimeter, it burned from 16 June 2024 to 9 July 2024 (24 days). The perimeter dates it from 17 June 2024 to 9 July 2024.
How much area did it burn?: The perimeter GWIS (Copernicus) rebuilt from heat detections is 14,465 hectares (144.6 km²). It is an estimate: official national figures may differ.
Which municipalities burned?: The fire only entered Ust-Maysky Ulus (14,047 ha, 0.2 %).
What was the weather like?: During the fire the temperature reached 30.7 °C, humidity dropped to 25 % and gusts hit 55 km/h. The fire danger index (FWI) reached 32, 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: 17 June 2024 → 16 June 2024.

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; 3 polygons grouped in this page.
Dates adjusted with the VIIRS detections inside the perimeter, which said 17 June 2024 to 9 July 2024. 937 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.

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