Tiro fire, February 2023 Tiro, Gnaléah
The fire started on 28 February 2023 in Tiro, Guinea, and satellites saw it burning for 5 days. Copernicus’s global GWIS system rebuilt a burnt perimeter of 4,153 hectares from heat detections, spread across 2 municipalities.
It is the 47th largest in Faranah since 2016 (of 208 with a page). Number 7 in Guinea in 2023, of 79.
- Burnt area
- 4,153ha
- GWIS perimeter (Copernicus)
- Duration
- 5days
- 28 Feb 2023 – 4 Mar 2023
- Municipalities hit
- 2
- sub-prefectures
- Started on
- 28 Feb
- 2023
- Heat detections
- 167
- in a single hotspot: 150 MW
- Danger at start
- 44
- Very high · FWI index
- Energy released
- 2.9GW
- 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 more than two months without rain (1 mm or more) when it started. Rain came after the fire: 1.0 mm on 14 Mar.
This area had burned before
40% of the perimeter overlaps earlier fires recorded since 2016: 494 ha in 2017, 1,036 ha in 2019, 1 ha in 2020, 116 ha in 2021, 40 ha in 2022.
What happened to each town
-
Tiro where it started2,354 ha reached on 25 Feb3.9 %
-
1,825 ha reached on 25 Feb1.7 %
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) |
|---|---|---|---|---|---|
| 28 Feb | 37.0 °C | 20 % | 22 km/h | 0.0 mm | Very high 44 |
| 1 Mar | 38.2 °C | 14 % | 29 km/h | 0.0 mm | Very high 45 |
| 2 Mar | 39.0 °C | 11 % | 36 km/h | 0.0 mm | Extreme 52 |
| 3 Mar | 38.3 °C | 9 % | 31 km/h | 0.0 mm | Extreme 52 |
| 4 Mar | 36.4 °C | 18 % | 32 km/h | 0.0 mm | Extreme 53 |
| 5 Mar after | 34.1 °C | 36 % | 33 km/h | 0.0 mm | Very high 39 |
| 6 Mar after | 38.0 °C | 24 % | 33 km/h | 0.0 mm | Very high 42 |
| 7 Mar after | 38.3 °C | 16 % | 35 km/h | 0.0 mm | Extreme 51 |
| 8 Mar after | 37.9 °C | 9 % | 37 km/h | 0.0 mm | Extreme 56 |
| 9 Mar after | 37.4 °C | 11 % | 22 km/h | 0.0 mm | Very high 49 |
| 10 Mar after | 36.8 °C | 22 % | 30 km/h | 0.0 mm | Very high 48 |
| 11 Mar after | 37.1 °C | 20 % | 34 km/h | 0.0 mm | Very high 49 |
| 12 Mar after | 37.2 °C | 17 % | 33 km/h | 0.0 mm | Extreme 51 |
| 13 Mar after | 37.8 °C | 22 % | 27 km/h | 0.0 mm | Very high 49 |
| 14 Mar after | 36.5 °C | 31 % | 30 km/h | 1.0 mm | High 32 |
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 · 167Every 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 Tiro fire last?
- GWIS (Copernicus) dates it between 28 February 2023 and 4 March 2023: 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 4,153 hectares (41.5 km²). It is an estimate: official national figures may differ.
- Which municipalities burned?
- The fire entered 2 municipalities: Tiro (2,354 ha, 3.9 %); Gnaléah (1,825 ha, 1.7 %).
- What was the weather like?
- During the fire the temperature reached 39.0 °C, humidity dropped to 9 % and gusts hit 36 km/h. The fire danger index (FWI) reached 53, class Extreme.
- Where does this data come from?
- From the GWIS (Copernicus) burnt perimeter, NASA FIRMS VIIRS hotspots and the administrative boundaries of Guinea (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.
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 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.