Gotenba fire, April 2021 Gotenba, Susono
The fire started on 11 April 2021 in Gotenba, Japan, and satellites saw it burning for 1 day. Copernicus’s global GWIS system rebuilt a burnt perimeter of 810 hectares from heat detections, spread across 2 municipalities.
It is the 4th largest in Shizuoka since 2016 (of 23 with a page). The largest in Japan in 2021, of 14.
- Burnt area
- 810ha
- GWIS perimeter (Copernicus)
- Duration
- 1day
- 11 Apr 2021 – 11 Apr 2021
- Municipalities hit
- 2
- municipalities
- Started on
- 11 Apr
- 2021
- Heat detections
- 27
- in a single hotspot: 101 MW
- Danger at start
- 0
- Very low · FWI index
- Energy released
- 645MW
- 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 0 days without rain (1 mm or more) when it started. Rain came after the fire: 11.2 mm on 13 Apr.
This area had burned before
68% of the perimeter overlaps earlier fires recorded since 2016: 474 ha in 2016, 40 ha in 2018, 501 ha in 2019, 133 ha in 2020. Part of it burned more than once, so the yearly figures add up to more than the 553 ha that had burned before.
- 501 ha Gotenba fire, February 2019 612 ha in total; the hectares shown are those it shares with this fire
- 279 ha Gotenba fire, February 2016 455 ha in total; the hectares shown are those it shares with this fire
- 179 ha Gotenba fire, March 2016 819 ha in total; the hectares shown are those it shares with this fire
- 133 ha Gotenba fire, February 2020 617 ha in total; the hectares shown are those it shares with this fire
- 40 ha Gotenba fire, January 2018 319 ha in total; the hectares shown are those it shares with this fire
- 17 ha Gotenba fire, January 2016 315 ha in total; the hectares shown are those it shares with this fire
What happened to each town
-
Gotenba where it started671 ha3.4 %
-
141 ha1.0 %
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) |
|---|---|---|---|---|---|
| 11 Apr | 12.0 °C | 41 % | 36 km/h | 0.0 mm | Very low 0 |
| 12 Apr after | 12.6 °C | 50 % | 34 km/h | 0.3 mm | Very low 1 |
| 13 Apr after | 10.8 °C | 73 % | 52 km/h | 11.2 mm | Very low 0 |
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 · 27Every satellite heat detection, one by one, with time, satellite, power and coordinates.
| Date and time | Satellite | FRP (MW) | Lat | Lon |
|---|
Other fires nearby
Frequently asked questions
- How long did the Gotenba fire last?
- GWIS (Copernicus) dates it between 11 April 2021 and 11 April 2021: 1 day 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 810 hectares (8.1 km²). It is an estimate: official national figures may differ.
- Which municipalities burned?
- The fire entered 2 municipalities: Gotenba (671 ha, 3.4 %); Susono (141 ha, 1.0 %).
- What was the weather like?
- During the fire the temperature reached 12.0 °C, humidity dropped to 41 % and gusts hit 36 km/h. The fire danger index (FWI) reached 0, class Very low.
- Where does this data come from?
- From the GWIS (Copernicus) burnt perimeter, NASA FIRMS VIIRS hotspots and the administrative boundaries of Japan (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: 119
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 (Creative Commons Attribution-ShareAlike 2.0). 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.