Sarumarani fire, April 2021 Sarumarani
The fire started on 3 April 2021 in Sarumarani, Nepal, and satellites saw it burning for 5 days. Copernicus’s global GWIS system rebuilt a burnt perimeter of 2,067 hectares from heat detections, spread across a single municipality.
It is the 47th largest in Lumbini since 2016 (of 49 with a page). Number 34 in Nepal in 2021, of 38.
The power measured by the satellite is low (9.0 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
- 2,067ha
- GWIS perimeter (Copernicus)
- Duration
- 5days
- 3 Apr 2021 – 7 Apr 2021
- Municipalities hit
- 1
- municipalities
- Started on
- 3 Apr
- 2021
- Heat detections
- 89
- in a single hotspot: 9 MW
- Danger at start
- 44
- Very high · FWI index
- Energy released
- 166MW
- 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 9 days without rain (1 mm or more) when it started. Rain came after the fire: 3.5 mm on 15 Apr.
This area had burned before
96% of the perimeter overlaps earlier fires recorded since 2016: 1,896 ha in 2016, 1,814 ha in 2019. Part of it burned more than once, so the yearly figures add up to more than the 1,983 ha that had burned before.
What happened to each town
-
Sarumarani where it started2,075 ha reached on 3 Apr13 %
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) |
|---|---|---|---|---|---|
| 3 Apr | 31.8 °C | 12 % | 40 km/h | 0.0 mm | Very high 44 |
| 4 Apr | 32.0 °C | 20 % | 31 km/h | 0.0 mm | Very high 40 |
| 5 Apr | 31.4 °C | 22 % | 35 km/h | 0.0 mm | Very high 40 |
| 6 Apr | 32.2 °C | 29 % | 31 km/h | 0.0 mm | High 35 |
| 7 Apr | 33.7 °C | 31 % | 46 km/h | 1.0 mm | High 26 |
| 8 Apr after | 33.6 °C | 27 % | 39 km/h | 0.7 mm | High 32 |
| 9 Apr after | 33.0 °C | 25 % | 42 km/h | 0.0 mm | High 36 |
| 10 Apr after | 33.8 °C | 18 % | 40 km/h | 0.0 mm | Very high 41 |
| 11 Apr after | 34.3 °C | 18 % | 43 km/h | 0.0 mm | Very high 44 |
| 12 Apr after | 34.9 °C | 17 % | 48 km/h | 0.0 mm | Very high 46 |
| 13 Apr after | 34.6 °C | 20 % | 46 km/h | 0.0 mm | Very high 46 |
| 14 Apr after | 36.0 °C | 21 % | 41 km/h | 0.0 mm | Very high 44 |
| 15 Apr after | 34.7 °C | 28 % | 48 km/h | 3.5 mm | Moderate 18 |
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 · 89Every 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 Sarumarani fire last?
- GWIS (Copernicus) dates it between 3 April 2021 and 7 April 2021: 5 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 2,067 hectares (20.7 km²). It is an estimate: official national figures may differ.
- Which municipalities burned?
- The fire only entered Sarumarani (2,075 ha, 13 %).
- What was the weather like?
- During the fire the temperature reached 34.9 °C, humidity dropped to 12 % and gusts hit 48 km/h. The fire danger index (FWI) reached 46, class Very high.
- Where does this data come from?
- From the GWIS (Copernicus) burnt perimeter, NASA FIRMS VIIRS hotspots and the administrative boundaries of Nepal (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: 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
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 ADM3 (Creative Commons Attribution-ShareAlike 4.0 International License). 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.