How long did the Verkhoyansky Ulus fire last?

According to the heat detections seen by satellite inside the perimeter, it burned from 31 July 2019 to 16 August 2019 (17 days). The perimeter dates it from 31 July 2019 to 11 August 2019.

How much area did it burn?

The perimeter GWIS (Copernicus) rebuilt from heat detections is 3,105 hectares (31.0 km²). It is an estimate: official national figures may differ.

Which municipalities burned?

The fire only entered Verkhoyansky Ulus (3,108 ha, 0.0 %).

What was the weather like?

During the fire the temperature reached 25.9 °C, humidity dropped to 25 % and gusts hit 40 km/h. The fire danger index (FWI) reached 26, 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 · 2019-07-31 → 2019-08-16

Verkhoyansky Ulus fire, 31 July 2019 Verkhoyansky Ulus

Out · last detection 16 Aug 2019, 17:18 UTC

The fire started on 31 July 2019 in Verkhoyansky Ulus, Russia, and satellites saw it burning for 17 days. Copernicus’s global GWIS system rebuilt a burnt perimeter of 3,105 hectares from heat detections, spread across a single municipality.

It is the 1382th largest in Sakha Republic since 2016 (of 1422 with a page). Number 589 in Russia in 2019, of 610.

Compare with…

Suggestions: Verkhoyansky Ulus · 2019 Verkhoyansky Ulus · 2020 Verkhoyansky Ulus · 2020 Verkhoyansky Ulus · 2019

Burnt area: 3,105ha; GWIS perimeter (Copernicus)
Duration: 17days; 31 Jul 2019 – 16 Aug 2019
Municipalities hit: 1; districts
Started on: 31 Jul; 2019
Heat detections: 630; in a single hotspot: 150 MW
Danger at start: 26; High · FWI index
Average daily power: 311MW; detected power per day, on average

HOTSPOTS BY DAY 31 Jul16 Aug

Play back 16 Aug 2019

How it evolved, day by day

31 Jul 3 Aug 6 Aug 11 Aug 14 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

26°high

40km/h · peak gust

25%lowest humidity

It had gone 2 days without rain (1 mm or more) when it started. Rain came after the fire: 2.0 mm on 20 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 2% of the area of London (31 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

Verkhoyansky Ulus where it started

3,108 ha reached on 31 Jul

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.

People and buildings inside the perimeter

GHSL 2020

Built-up area< 0.1 ha

Residents< 20

Inside the perimeter there was no noticeable built-up land and almost nobody lived there (GHSL 2020, 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.

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)
24 Jul	25.9 °C	26 %	32 km/h	0.0 mm	High 26
25 Jul	25.6 °C	37 %	30 km/h	0.5 mm	High 25
26 Jul	19.8 °C	59 %	40 km/h	7.9 mm	Very low 1
27 Jul	10.6 °C	82 %	21 km/h	5.7 mm	Very low 0
28 Jul	15.6 °C	44 %	18 km/h	0.0 mm	Very low 1
29 Jul	15.6 °C	43 %	36 km/h	0.1 mm	Very low 4
30 Jul	13.7 °C	42 %	34 km/h	0.0 mm	Low 7
31 Jul	15.3 °C	36 %	25 km/h	0.0 mm	Low 11
1 Aug	16.1 °C	41 %	19 km/h	0.0 mm	Low 10
2 Aug	18.0 °C	31 %	21 km/h	0.0 mm	Moderate 15
3 Aug	20.3 °C	25 %	30 km/h	0.0 mm	Moderate 19
4 Aug	20.2 °C	29 %	30 km/h	0.0 mm	Moderate 19
5 Aug	19.9 °C	31 %	17 km/h	0.0 mm	Moderate 19
6 Aug	19.0 °C	49 %	31 km/h	0.5 mm	Moderate 17
7 Aug	21.5 °C	35 %	22 km/h	0.0 mm	Moderate 18
8 Aug	19.7 °C	51 %	25 km/h	1.5 mm	Low 7
9 Aug	17.9 °C	66 %	20 km/h	2.4 mm	Very low 2
10 Aug	23.1 °C	43 %	23 km/h	0.0 mm	Low 6
11 Aug	25.2 °C	36 %	20 km/h	0.0 mm	Moderate 13
12 Aug	26.9 °C	30 %	26 km/h	0.0 mm	Moderate 20
13 Aug	24.8 °C	31 %	16 km/h	0.0 mm	Moderate 20
14 Aug	23.0 °C	35 %	15 km/h	0.0 mm	Moderate 19
15 Aug	23.2 °C	37 %	14 km/h	0.0 mm	Moderate 20
16 Aug	20.6 °C	45 %	19 km/h	0.0 mm	Moderate 18
17 Aug after	18.6 °C	64 %	22 km/h	0.9 mm	Low 8
18 Aug after	16.1 °C	69 %	12 km/h	0.0 mm	Low 8
19 Aug after	22.2 °C	53 %	16 km/h	0.2 mm	Low 11
20 Aug after	22.3 °C	50 %	18 km/h	2.0 mm	Very low 4

Before and after, from space

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

↔

Before · 24 Jul 2019

After · 23 Aug 2019

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 · 630Every 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 Verkhoyansky Ulus fire last?: According to the heat detections seen by satellite inside the perimeter, it burned from 31 July 2019 to 16 August 2019 (17 days). The perimeter dates it from 31 July 2019 to 11 August 2019.
How much area did it burn?: The perimeter GWIS (Copernicus) rebuilt from heat detections is 3,105 hectares (31.0 km²). It is an estimate: official national figures may differ.
Which municipalities burned?: The fire only entered Verkhoyansky Ulus (3,108 ha, 0.0 %).
What was the weather like?: During the fire the temperature reached 25.9 °C, humidity dropped to 25 % and gusts hit 40 km/h. The fire danger index (FWI) reached 26, 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 Last day with fire: 11 August 2019 → 16 August 2019.

RSS Changes to this page

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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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What really happened?

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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.

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 31 July 2019 to 11 August 2019. 630 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 2020, 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