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Dadal fire, June 2017 Dadal

Out · last measured on 2 Jul 2017

The fire started on 27 June 2017 in Dadal, Mongolia, and satellites saw it burning for 6 days. Copernicus’s global GWIS system rebuilt a burnt perimeter of 2,515 hectares from heat detections, spread across a single municipality.

Number 22 in Mongolia in 2017, of 27.

We have the GWIS perimeter for this fire, but the VIIRS sensors did not capture it in enough detail: no day-by-day evolution, but the split by municipality is there.

Burnt area
2,515ha
GWIS perimeter (Copernicus)
Duration
6days
27 Jun 2017 – 2 Jul 2017
Municipalities hit
1
districts
Started on
27 Jun
2017
Danger at start
45
Very high · FWI index

Where it burned

The weather it burned in

34°high
49km/h · peak gust
17%lowest humidity

It had gone 5 days without rain (1 mm or more) when it started. Rain came after the fire: 1.2 mm on 3 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. Dadal where it started
    2,505 ha
    0.5 %

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 33.8 °C 18 % 42 km/h 0.2 mm Very high 45
28 Jun 31.0 °C 28 % 33 km/h 0.0 mm Very high 41
29 Jun 28.1 °C 29 % 31 km/h 0.0 mm High 34
30 Jun 31.6 °C 17 % 31 km/h 0.1 mm Very high 39
1 Jul 29.9 °C 32 % 27 km/h 0.0 mm High 32
2 Jul 32.2 °C 30 % 49 km/h 0.5 mm Very high 42
3 Jul after 30.4 °C 28 % 33 km/h 1.2 mm High 25

Before and after, from space

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

Before · 20 Jun 2017
After · 9 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.

Frequently asked questions

How long did the Dadal fire last?
GWIS (Copernicus) dates it between 27 June 2017 and 2 July 2017: 6 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 2,515 hectares (25.2 km²). It is an estimate: official national figures may differ.
Which municipalities burned?
The fire only entered Dadal (2,505 ha, 0.5 %).
What was the weather like?
During the fire the temperature reached 33.8 °C, humidity dropped to 17 % and gusts hit 49 km/h. The fire danger index (FWI) reached 45, class Very high.
Where does this data come from?
From the GWIS (Copernicus) burnt perimeter, NASA FIRMS VIIRS hotspots and the administrative boundaries of Mongolia (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: 105 · 101

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
What do you think is wrong?

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 105 · 101.

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 (Creative Commons Attribution 3.0 Intergovernmental Organisations (CC BY 3.0 IGO)). 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.