Aldansky Ulus fire, 25 June 2017 Aldansky Ulus, Ust-Maysky Ulus
The fire started on 25 June 2017 in Aldansky Ulus, Russia, and satellites saw it burning for 10 days. Copernicus’s global GWIS system rebuilt a burnt perimeter of 4,640 hectares from heat detections, spread across 2 municipalities.
It is the 984th largest in Sakha Republic since 2016 (of 1422 with a page). Number 202 in Russia in 2017, of 369.
- Burnt area
- 4,640ha
- GWIS perimeter (Copernicus)
- Duration
- 10days
- 25 Jun 2017 – 4 Jul 2017
- Municipalities hit
- 2
- districts
- Started on
- 25 Jun
- 2017
- Heat detections
- 369
- in a single hotspot: 130 MW
- Danger at start
- 20
- Moderate · FWI index
- Energy released
- 3.3GW
- sum of detected power
Where it burned
How it evolved, day by day
Fire radiative power detected each day, in megawatts, and number of hotspots. The magenta bar marks the peak day.
The weather it burned in
It had gone 7 days without rain (1 mm or more) when it started. Rain came after the fire: 2.5 mm on 5 Jul.
This area had burned before
No earlier perimeters overlap this fire since 2016, when the satellite record begins.
What happened to each town
-
Aldansky Ulus where it started4,698 ha reached on 25 Jun0.0 %
-
2 ha0.0 %
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) |
|---|---|---|---|---|---|
| 25 Jun | 27.0 °C | 38 % | 36 km/h | 0.0 mm | Moderate 20 |
| 26 Jun | 27.3 °C | 33 % | 30 km/h | 0.0 mm | High 22 |
| 27 Jun | 27.1 °C | 32 % | 40 km/h | 0.0 mm | High 24 |
| 28 Jun | 28.2 °C | 35 % | 20 km/h | 0.0 mm | High 22 |
| 29 Jun | 30.4 °C | 30 % | 19 km/h | 0.0 mm | High 23 |
| 30 Jun | 30.5 °C | 20 % | 36 km/h | 0.0 mm | High 32 |
| 1 Jul | 33.3 °C | 25 % | 23 km/h | 0.0 mm | High 30 |
| 2 Jul | 35.4 °C | 24 % | 35 km/h | 0.0 mm | High 36 |
| 3 Jul | 31.0 °C | 30 % | 27 km/h | 0.0 mm | High 33 |
| 4 Jul | 37.9 °C | 23 % | 37 km/h | 0.8 mm | High 36 |
| 5 Jul after | 27.1 °C | 46 % | 31 km/h | 2.5 mm | Low 9 |
Before and after, from space
Drag the line to compare the same ground before the fire and after it.
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 · 369Every satellite heat detection, one by one, with time, satellite, power and coordinates.
| Date and time | Satellite | FRP (MW) | Lat | Lon |
|---|
Other fires nearby
- 23,799 haAldansky Ulus11 July 2022 · 22 days · 13 km away
- 16,008 haAldansky Ulus1 July 2024 · 14 days · 22 km away
- 11,320 haUst-Maysky Ulus27 June 2024 · 18 days · 28 km away
- 7,344 haAldansky Ulus16 September 2020 · 12 days · 30 km away
- 12,952 haAldansky UlusJuly 2018 · 19 days · 32 km away
- 4,396 haAldansky Ulus4 August 2023 · 7 days · 32 km away
Frequently asked questions
- How long did the Aldansky Ulus fire last?
- GWIS (Copernicus) dates it between 25 June 2017 and 4 July 2017: 10 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 4,640 hectares (46.4 km²). It is an estimate: official national figures may differ.
- Which municipalities burned?
- The fire entered 2 municipalities: Aldansky Ulus (4,698 ha, 0.0 %); Ust-Maysky Ulus (2 ha, 0.0 %).
- What was the weather like?
- During the fire the temperature reached 37.9 °C, humidity dropped to 20 % and gusts hit 40 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
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
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.