How long did the Aldansky Ulus fire last?

GWIS (Copernicus) dates it between 25 June 2024 and 5 July 2024: 11 days between the first and last heat detection of the perimeter.

How much area did it burn?

The perimeter GWIS (Copernicus) rebuilt from heat detections is 4,233 hectares (42.3 km²). It is an estimate: official national figures may differ.

Which municipalities burned?

The fire only entered Aldansky Ulus (4,228 ha, 0.0 %).

What was the weather like?

During the fire the temperature reached 34.5 °C, humidity dropped to 24 % and gusts hit 52 km/h. The fire danger index (FWI) reached 36, 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 · 2024-06-25 → 2024-07-05

Aldansky Ulus fire, 25 June 2024 Aldansky Ulus

Out · last detection 6 Jul 2024, 17:33 UTC

The fire started on 25 June 2024 in Aldansky Ulus, Russia, and satellites saw it burning for 11 days. Copernicus’s global GWIS system rebuilt a burnt perimeter of 4,233 hectares from heat detections, spread across a single municipality.

It is the 1072th largest in Sakha Republic since 2016 (of 1422 with a page). Number 415 in Russia in 2024, of 560.

Burnt area: 4,233ha; GWIS perimeter (Copernicus)
Duration: 11days; 25 Jun 2024 – 5 Jul 2024
Municipalities hit: 1; districts
Started on: 25 Jun; 2024
Heat detections: 251; in a single hotspot: 173 MW
Danger at start: 20; Moderate · FWI index
Energy released: 2.3GW; sum of detected power

Play back 6 Jul 2024

HOTSPOTS BY DAY 25 Jun5 Jul

How it evolved, day by day

2526273012456

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

24%lowest humidity

It had gone 9 days without rain (1 mm or more) when it started. Rain came after the fire: 5.9 mm on 15 Jul.

This area had burned before

0% of the perimeter overlaps earlier fires recorded since 2016: 8 ha in 2022.

What happened to each town

Aldansky Ulus where it started

4,228 ha reached on 25 Jun

0.0 %

Burnt area inside each municipality, from crossing the GWIS perimeter with administrative boundaries. The distance is from the town centre 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)
21 Jun	27.3 °C	34 %	26 km/h	0.0 mm	Moderate 20
22 Jun	27.8 °C	33 %	16 km/h	0.0 mm	Moderate 21
23 Jun	28.6 °C	32 %	24 km/h	0.0 mm	High 24
24 Jun	28.9 °C	24 %	26 km/h	0.0 mm	High 28
25 Jun	30.3 °C	24 %	30 km/h	0.0 mm	High 30
26 Jun	30.6 °C	28 %	45 km/h	0.0 mm	High 36
27 Jun	22.5 °C	30 %	52 km/h	0.0 mm	High 36
28 Jun	15.5 °C	50 %	40 km/h	3.9 mm	Very low 4
29 Jun	20.2 °C	40 %	28 km/h	4.3 mm	Very low 2
30 Jun	26.3 °C	27 %	38 km/h	0.0 mm	Moderate 15
1 Jul	31.2 °C	29 %	41 km/h	0.2 mm	High 25
2 Jul	31.2 °C	45 %	42 km/h	1.3 mm	Moderate 16
3 Jul	34.5 °C	36 %	35 km/h	1.2 mm	Moderate 20
4 Jul	28.2 °C	30 %	34 km/h	1.4 mm	Moderate 17
5 Jul	23.2 °C	31 %	42 km/h	0.0 mm	High 23
6 Jul after	21.5 °C	40 %	25 km/h	0.0 mm	Moderate 20
7 Jul after	23.5 °C	40 %	18 km/h	0.0 mm	Moderate 18
8 Jul after	25.8 °C	36 %	28 km/h	0.0 mm	Moderate 21
9 Jul after	24.9 °C	41 %	42 km/h	0.0 mm	High 26
10 Jul after	21.4 °C	64 %	23 km/h	0.7 mm	Moderate 12
11 Jul after	26.3 °C	46 %	15 km/h	0.0 mm	Moderate 15
12 Jul after	28.5 °C	42 %	18 km/h	0.1 mm	Moderate 18
13 Jul after	32.2 °C	26 %	24 km/h	0.0 mm	High 27
14 Jul after	32.1 °C	31 %	27 km/h	0.0 mm	High 32
15 Jul after	21.0 °C	65 %	19 km/h	5.9 mm	Very low 1

Before and after, from space

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

↔

Before · 18 Jun 2024

After · 12 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 23 June 2024 the air beside the fire reached 80 µg/m³ of PM2.5. That day averaged 44: 2.9 times the WHO daily guideline (15).

PM2.5 peak80 µg/m³

Days over the guideline13 days

PM10115 µg/m³

Optical depth1.68

WHO 15

232425262728293012345678

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 · 251Every 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 Aldansky Ulus fire last?: GWIS (Copernicus) dates it between 25 June 2024 and 5 July 2024: 11 days between the first and last heat detection of the perimeter.
How much area did it burn?: The perimeter GWIS (Copernicus) rebuilt from heat detections is 4,233 hectares (42.3 km²). It is an estimate: official national figures may differ.
Which municipalities burned?: The fire only entered Aldansky Ulus (4,228 ha, 0.0 %).
What was the weather like?: During the fire the temperature reached 34.5 °C, humidity dropped to 24 % and gusts hit 52 km/h. The fire danger index (FWI) reached 36, 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

Satellite cross-check

NASA FIRMS ↗
GWIS · Copernicus ↗

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.

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