How long did the Maple fire last?

It burned between 4 August 2018 and 4 August 2018: 1 day, according to the start date recorded by United States agencies (MTBS / NIFC) and the heat detections seen by satellite.

How much area did it burn?

The official perimeter published by United States agencies (MTBS / NIFC) is 1,434 hectares (14.3 km²). Other tallies, such as daily incident reports, may give slightly different figures.

Which counties burned?

The fire only entered Mason (1,432 ha, 0.6 %).

What was the weather like?

During the fire the temperature reached 28.5 °C, humidity dropped to 25 % and gusts hit 54 km/h. The fire danger index (FWI) reached 24, class High.

Where does this data come from?

From the official burnt perimeter of United States agencies (MTBS / NIFC, public domain), NASA FIRMS VIIRS hotspots and the administrative boundaries of United States. It is not an official report.

US · United States · 2018-08-04 → 2018-08-04

Maple Fire, August 2018 Mason

Out · last detection 5 Aug 2018, 09:47 UTC

The fire started on 4 August 2018 in Mason, United States, and satellites saw it burning for 1 day. United States agencies (MTBS / NIFC) mapped an official burnt perimeter of 1,434 hectares, spread across a single county.

It is the 166th largest in Washington since 2016 (of 285 with a page). Number 259 in United States in 2018, of 511.

Burnt area: 1,434ha; official perimeter (MTBS / NIFC)
Duration: 1day; 4 Aug 2018 – 4 Aug 2018
Municipalities hit: 1; counties
Started on: 4 Aug; 2018
Heat detections: 256; in a single hotspot: 91 MW
Danger at start: 3; Very low · FWI index
Energy released: 1MW; sum of detected power

HOTSPOTS BY DAY 4 Aug4 Aug

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

28°high

54km/h · peak gust

25%lowest humidity

It had gone 14 days without rain (1 mm or more) when it started. Rain came after the fire: 5.8 mm on 9 Sept.

This area had burned before

No earlier perimeters overlap this fire since 2016, when the satellite record begins.

What happened to each town

Mason where it started

1,432 ha reached on 5 Aug

0.6 %

Burnt area inside each county, 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.

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 Aug	20.9 °C	43 %	25 km/h	3.1 mm	Very low 3
5 Aug after	23.5 °C	32 %	26 km/h	0.0 mm	Low 9
6 Aug after	24.1 °C	32 %	21 km/h	0.0 mm	Moderate 15
7 Aug after	26.5 °C	31 %	23 km/h	0.0 mm	Moderate 19
8 Aug after	28.5 °C	25 %	25 km/h	0.0 mm	High 23
9 Aug after	28.3 °C	26 %	24 km/h	0.0 mm	High 23
10 Aug after	21.3 °C	39 %	40 km/h	0.0 mm	High 24
11 Aug after	14.8 °C	74 %	38 km/h	6.3 mm	Very low 0
12 Aug after	17.1 °C	59 %	30 km/h	0.0 mm	Very low 2
13 Aug after	21.7 °C	39 %	28 km/h	0.0 mm	Low 6
14 Aug after	24.8 °C	31 %	24 km/h	0.0 mm	Moderate 14
15 Aug after	23.5 °C	34 %	26 km/h	0.0 mm	Moderate 16
16 Aug after	19.4 °C	45 %	32 km/h	0.0 mm	Moderate 16
17 Aug after	18.7 °C	47 %	29 km/h	0.0 mm	Moderate 15
18 Aug after	21.3 °C	43 %	24 km/h	0.0 mm	Moderate 15
19 Aug after	21.0 °C	46 %	23 km/h	0.0 mm	Moderate 15
20 Aug after	23.2 °C	31 %	27 km/h	0.0 mm	Moderate 18
21 Aug after	26.3 °C	26 %	28 km/h	0.0 mm	High 22
22 Aug after	24.4 °C	33 %	36 km/h	0.0 mm	High 24
23 Aug after	15.2 °C	50 %	38 km/h	0.0 mm	Moderate 19
24 Aug after	14.8 °C	52 %	30 km/h	0.5 mm	Moderate 15
25 Aug after	11.8 °C	70 %	28 km/h	0.5 mm	Low 11
26 Aug after	11.8 °C	72 %	33 km/h	0.0 mm	Low 10
27 Aug after	19.1 °C	32 %	28 km/h	0.0 mm	Moderate 15
28 Aug after	22.7 °C	34 %	24 km/h	0.0 mm	Moderate 18
29 Aug after	18.0 °C	49 %	43 km/h	0.0 mm	Moderate 19
30 Aug after	16.4 °C	57 %	36 km/h	2.7 mm	Very low 4
31 Aug after	16.1 °C	49 %	30 km/h	1.9 mm	Very low 3
1 Sept after	15.9 °C	49 %	26 km/h	1.8 mm	Very low 3
2 Sept after	19.0 °C	34 %	31 km/h	0.0 mm	Low 7
3 Sept after	16.5 °C	50 %	28 km/h	1.8 mm	Very low 4
4 Sept after	19.1 °C	33 %	24 km/h	0.0 mm	Low 8
5 Sept after	22.1 °C	27 %	27 km/h	0.0 mm	Moderate 16
6 Sept after	22.8 °C	25 %	34 km/h	0.0 mm	High 22
7 Sept after	15.5 °C	47 %	54 km/h	2.9 mm	Very low 4
8 Sept after	13.5 °C	56 %	35 km/h	0.0 mm	Very low 5
9 Sept after	13.4 °C	60 %	51 km/h	5.8 mm	Very low 0

Before and after, from space

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

↔

Before · 28 Jul 2018

After · 11 Aug 2018

Before After

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 · 256Every 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 time	Satellite	FRP (MW)	Lat	Lon

Other fires nearby

All fires in United States ›

Frequently asked questions

How long did the Maple fire last?: It burned between 4 August 2018 and 4 August 2018: 1 day, according to the start date recorded by United States agencies (MTBS / NIFC) and the heat detections seen by satellite.
How much area did it burn?: The official perimeter published by United States agencies (MTBS / NIFC) is 1,434 hectares (14.3 km²). Other tallies, such as daily incident reports, may give slightly different figures.
Which counties burned?: The fire only entered Mason (1,432 ha, 0.6 %).
What was the weather like?: During the fire the temperature reached 28.5 °C, humidity dropped to 25 % and gusts hit 54 km/h. The fire danger index (FWI) reached 24, class High.
Where does this data come from?: From the official burnt perimeter of United States agencies (MTBS / NIFC, public domain), NASA FIRMS VIIRS hotspots and the administrative boundaries of United States. 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: 911

Satellite cross-check

NASA FIRMS ↗
NIFC · Fire maps ↗

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Where this data comes from

The perimeter is official and in the public domain. For past years it comes from MTBS (Monitoring Trends in Burn Severity), run by the U.S. Geological Survey and the USDA Forest Service, which map it on Landsat and Sentinel-2 imagery. For the current and last year it comes from WFIGS at the National Interagency Fire Center (NIFC): incident perimeters mapped by fire crews, aircraft and imagery. Heat detections come from the VIIRS sensors aboard Suomi-NPP and NOAA-20, distributed by NASA FIRMS at 375 m resolution. County boundaries come from geoBoundaries ADM2 (Public Domain). The area per county is computed by WorldFires by crossing the perimeter with those boundaries, so it may differ slightly from official figures.

Where it burned