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Alimena fire, August 2019 Alimena, Resuttano, Petralia Sottana

Out · last detection 3 Aug 2019, 12:37 UTC

The fire started on 3 August 2019 in Alimena, Italy, and satellites saw it burning for 1 day. Copernicus mapped a burnt perimeter of 282 hectares from satellite imagery, spread across 3 municipalities.

It is the 76th largest in Palermo since 2016 (of 178 with a page). Number 19 in Italy in 2019, of 103.

Burnt area
282ha
Copernicus perimeter
Duration
1day
3 Aug 2019 – 3 Aug 2019
Municipalities hit
3
municipalities
Started on
3 Aug
2019
Heat detections
7
in a single hotspot: 62 MW
Danger at start
38
High · FWI index
Energy released
224MW
sum of detected power

Where it burned

HOTSPOTS BY DAY 3 Aug3 Aug

How it evolved, day by day

3

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

The weather it burned in

31°high
49km/h · peak gust
27%lowest humidity

It had gone 17 days without rain (1 mm or more) when it started.

This area had burned before

89% of the perimeter overlaps earlier fires recorded since 2016: 251 ha in 2016.

What happened to each town

  1. Alimena 1,761 inhabitants · 4.1 km from the town where it started
    271 ha reached on 3 Aug
    4.6 %
  2. Resuttano 1,752 inhabitants · 2.6 km from the town
    10 ha reached on 3 Aug
    0.3 %
  3. 2 ha
    0.0 %

Burnt area inside each municipality, from crossing the official 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.

What burned

  • Agricultural areas55 %
  • Other natural land45 %

Land cover inside the perimeter according to Corine Land Cover, as reported by Copernicus.

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 Aug 30.9 °C 27 % 49 km/h 0.0 mm High 38
4 Aug after 30.0 °C 27 % 37 km/h 0.0 mm High 34
5 Aug after 30.0 °C 31 % 30 km/h 0.0 mm High 30
6 Aug after 31.0 °C 26 % 24 km/h 0.0 mm High 31
7 Aug after 31.8 °C 20 % 50 km/h 0.0 mm Very high 42
8 Aug after 33.8 °C 35 % 35 km/h 0.0 mm High 32
9 Aug after 29.4 °C 55 % 37 km/h 0.0 mm High 24
10 Aug after 31.1 °C 50 % 31 km/h 0.0 mm High 22
11 Aug after 31.6 °C 44 % 27 km/h 0.0 mm Moderate 21
12 Aug after 31.5 °C 42 % 28 km/h 0.0 mm High 21
13 Aug after 30.3 °C 49 % 33 km/h 0.0 mm High 24

Before and after, from space

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

Before · 27 Jul 2019
After · 10 Aug 2019

If the day is cloudy, change the date: each satellite passes once a day. In false colour the burnt ground looks brown or red.

The smoke

CAMS · Copernicus

On 3 August 2019 the air beside the fire reached 27 µg/m³ of PM2.5, but no daily average passed the WHO guideline (15).

PM2.5 peak27 µg/m³
Days over the guideline0 days
PM1039 µg/m³
123456
Good Fair Moderate Poor Very poor Extremely poor

Particles from the Copernicus CAMS model at the centre of the perimeter; these are not measurements in each town. The pale bar is the worst hour, the solid one the daily average.

Open-Meteo.com (CC BY 4.0) · Copernicus Atmosphere Monitoring Service (CAMS)

Detections table · 7Every 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 Italy ›

Frequently asked questions

How long did the Alimena fire last?
Copernicus dates it between 3 August 2019 and 3 August 2019: 1 day between the first and last image with fire.
How much area did it burn?
The perimeter Copernicus measured from satellite imagery is 282 hectares (2.8 km²). Official national figures may differ.
Which municipalities burned?
The fire entered 3 municipalities: Alimena (271 ha, 4.6 %); Resuttano (10 ha, 0.3 %); Petralia Sottana (2 ha, 0.0 %).
Did the fire reach a town?
The closest fire to a town centre came within 2.6 km of Resuttano. That is the distance to the perimeter or nearest hotspot; it does not mean it entered the houses.
What was the weather like?
During the fire the temperature reached 30.9 °C, humidity dropped to 27 % and gusts hit 49 km/h. The fire danger index (FWI) reached 38, class High.
Where does this data come from?
From the EFFIS (Copernicus) burnt perimeter, NASA FIRMS VIIRS hotspots and the administrative boundaries of Italy (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: 112 · 1515

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 112 · 1515.

Where this data comes from

The perimeter and land cover come from the Copernicus European Forest Fire Information System (EFFIS), measured on MODIS and Sentinel-2 imagery and published under CC BY 4.0. 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 ADM4 (Creative Commons Attribution 3.0 License). The area per municipality is computed by WorldFires by crossing the perimeter with those boundaries, so it may differ slightly from each country’s official figure.