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Ban Thi fire, March 2017 Ban Thi, San Kamphaeng

Out · last detection 16 Mar 2017, 18:29 UTC

The fire started on 9 March 2017 in Ban Thi, Thailand, and satellites saw it burning for 9 days. Copernicus’s global GWIS system rebuilt a burnt perimeter of 2,425 hectares from heat detections, spread across 2 municipalities.

It is the 10th largest in Lamphun Province since 2016 (of 35 with a page). Number 47 in Thailand in 2017, of 240.

The power measured by the satellite is low (8.4 MW in the strongest hotspot), more typical of grass or stubble burning, or a slow surface fire, than of a large crown fire.

Burnt area
2,425ha
GWIS perimeter (Copernicus)
Duration
9days
9 Mar 2017 – 17 Mar 2017
Municipalities hit
2
districts
Started on
9 Mar
2017
Heat detections
63
in a single hotspot: 8 MW
Danger at start
29
High · FWI index
Energy released
114MW
sum of detected power

Where it burned

16 Mar 2017
HOTSPOTS BY DAY 9 Mar17 Mar

How it evolved, day by day

910111213141516

Fire radiative power detected each day, in megawatts, and number of hotspots. The magenta bar marks the peak day.

The weather it burned in

37°high
41km/h · peak gust
19%lowest humidity

It had gone 50 days without rain (1 mm or more) when it started. Rain came after the fire: 8.1 mm on 27 Mar.

This area had burned before

11% of the perimeter overlaps earlier fires recorded since 2016: 299 ha in 2016. Part of it burned more than once, so the yearly figures add up to more than the 277 ha that had burned before.

What happened to each town

  1. Ban Thi where it started
    2,225 ha reached on 7 Mar
    16 %
  2. San Kamphaeng
    213 ha reached on 8 Mar
    0.9 %

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)
4 Mar 35.5 °C 26 % 30 km/h 0.0 mm High 29
5 Mar 35.7 °C 23 % 31 km/h 0.0 mm High 31
6 Mar 36.1 °C 24 % 29 km/h 0.0 mm High 32
7 Mar 35.9 °C 23 % 31 km/h 0.0 mm High 33
8 Mar 35.0 °C 31 % 31 km/h 0.0 mm High 33
9 Mar 35.2 °C 29 % 41 km/h 0.0 mm High 36
10 Mar 34.8 °C 36 % 36 km/h 0.0 mm High 32
11 Mar 36.3 °C 32 % 31 km/h 0.0 mm High 31
12 Mar 37.2 °C 26 % 37 km/h 0.0 mm High 36
13 Mar 36.6 °C 27 % 34 km/h 0.0 mm High 34
14 Mar 36.4 °C 28 % 30 km/h 0.0 mm High 33
15 Mar 36.9 °C 19 % 33 km/h 0.0 mm Very high 39
16 Mar 37.4 °C 23 % 34 km/h 0.0 mm Very high 40
17 Mar 35.9 °C 29 % 36 km/h 0.0 mm Very high 40
18 Mar after 36.5 °C 26 % 36 km/h 0.0 mm Very high 38
19 Mar after 36.9 °C 21 % 34 km/h 0.0 mm Very high 38
20 Mar after 36.6 °C 25 % 32 km/h 0.0 mm Very high 38
21 Mar after 35.5 °C 28 % 37 km/h 0.0 mm Very high 40
22 Mar after 35.6 °C 21 % 25 km/h 0.0 mm High 35
23 Mar after 36.4 °C 28 % 31 km/h 0.0 mm High 38
24 Mar after 37.6 °C 27 % 29 km/h 0.0 mm High 38
25 Mar after 37.8 °C 24 % 30 km/h 0.0 mm Very high 39
26 Mar after 38.8 °C 17 % 34 km/h 0.0 mm Very high 47
27 Mar after 31.3 °C 55 % 37 km/h 8.1 mm Very low 5

Before and after, from space

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

Before · 2 Mar 2017
After · 24 Mar 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 · 63Every 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 Thailand ›

Frequently asked questions

How long did the Ban Thi fire last?
GWIS (Copernicus) dates it between 9 March 2017 and 17 March 2017: 9 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 2,425 hectares (24.2 km²). It is an estimate: official national figures may differ.
Which municipalities burned?
The fire entered 2 municipalities: Ban Thi (2,225 ha, 16 %); San Kamphaeng (213 ha, 0.9 %).
What was the weather like?
During the fire the temperature reached 37.4 °C, humidity dropped to 19 % and gusts hit 41 km/h. The fire danger index (FWI) reached 40, class Very high.
Where does this data come from?
From the GWIS (Copernicus) burnt perimeter, NASA FIRMS VIIRS hotspots and the administrative boundaries of Thailand (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: 199 · 191

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 199 · 191.

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.