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Ust-Aldansky Ulus fire, 27 June 2017 Ust-Aldansky Ulus, Tomponsky Ulus

Out · last detection 16 Jul 2017, 03:01 UTC

The fire started on 27 June 2017 in Ust-Aldansky Ulus, Russia, and satellites saw it burning for 20 days. Copernicus’s global GWIS system rebuilt a burnt perimeter of 23,725 hectares from heat detections, spread across 2 municipalities.

It is the 215th largest in Sakha Republic since 2016 (of 1422 with a page). Number 16 in Russia in 2017, of 369.

Burnt area
23,725ha
GWIS perimeter (Copernicus)
Duration
20days
27 Jun 2017 – 16 Jul 2017
Municipalities hit
2
districts
Started on
27 Jun
2017
Heat detections
2,600
in a single hotspot: 234 MW
Danger at start
24
High · FWI index
Energy released
29.7GW
sum of detected power

Where it burned

16 Jul 2017
HOTSPOTS BY DAY 27 Jun16 Jul

How it evolved, day by day

272829301234578910111213141516

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
55km/h · peak gust
24%lowest humidity

It had gone one day without rain (1 mm or more) when it started. Rain came after the fire: 4.6 mm on 17 Jul.

This area had burned before

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

What happened to each town

  1. Ust-Aldansky Ulus where it started
    24,085 ha reached on 27 Jun
    1.3 %
  2. Tomponsky Ulus
    7 ha
    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)
27 Jun 29.2 °C 28 % 31 km/h 0.0 mm High 24
28 Jun 31.0 °C 24 % 21 km/h 0.0 mm High 26
29 Jun 29.1 °C 30 % 30 km/h 0.0 mm High 27
30 Jun 29.3 °C 34 % 40 km/h 0.0 mm High 29
1 Jul 31.5 °C 27 % 38 km/h 0.0 mm High 29
2 Jul 28.0 °C 30 % 55 km/h 1.3 mm High 25
3 Jul 24.7 °C 29 % 34 km/h 0.0 mm High 26
4 Jul 21.1 °C 44 % 52 km/h 3.0 mm Low 7
5 Jul 25.4 °C 34 % 45 km/h 0.0 mm Moderate 18
6 Jul 22.2 °C 43 % 26 km/h 1.6 mm Low 7
7 Jul 25.2 °C 32 % 38 km/h 3.3 mm Low 7
8 Jul 21.8 °C 29 % 28 km/h 0.0 mm Moderate 15
9 Jul 25.4 °C 33 % 26 km/h 0.0 mm Moderate 19
10 Jul 27.1 °C 34 % 46 km/h 0.0 mm High 25
11 Jul 28.2 °C 37 % 45 km/h 0.0 mm High 25
12 Jul 30.5 °C 40 % 33 km/h 0.0 mm High 22
13 Jul 28.8 °C 50 % 24 km/h 2.0 mm Low 8
14 Jul 28.3 °C 42 % 25 km/h 0.0 mm Moderate 17
15 Jul 27.2 °C 38 % 25 km/h 0.0 mm Moderate 21
16 Jul 21.3 °C 54 % 22 km/h 2.8 mm Very low 4
17 Jul after 22.6 °C 65 % 18 km/h 4.6 mm Very low 1

Before and after, from space

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

Before · 20 Jun 2017
After · 23 Jul 2017

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 · 2,600Every 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 Ust-Aldansky Ulus fire last?
GWIS (Copernicus) dates it between 27 June 2017 and 16 July 2017: 20 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 23,725 hectares (237.2 km²). It is an estimate: official national figures may differ.
Which municipalities burned?
The fire entered 2 municipalities: Ust-Aldansky Ulus (24,085 ha, 1.3 %); Tomponsky Ulus (7 ha, 0.0 %).
What was the weather like?
During the fire the temperature reached 31.5 °C, humidity dropped to 24 % and gusts hit 55 km/h. The fire danger index (FWI) reached 29, 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.

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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.