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Terwilliger Fire, August 2018 Lane

Out · last detection 20 Aug 2018, 21:31 UTC

The fire started on 19 August 2018 in Lane, United States, and satellites saw it burning for 1 day. United States agencies (MTBS / NIFC) mapped an official burnt perimeter of 4,610 hectares, spread across a single county.

It is the 118th largest in Oregon since 2016 (of 327 with a page). Number 114 in United States in 2018, of 511.

Burnt area
4,610ha
official perimeter (MTBS / NIFC)
Duration
1day
19 Aug 2018 – 19 Aug 2018
Municipalities hit
1
counties
Started on
19 Aug
2018
Heat detections
395
in a single hotspot: 187 MW
Danger at start
33
High · FWI index
Energy released
168MW
sum of detected power

Where it burned

HOTSPOTS BY DAY 19 Aug19 Aug

How it evolved, day by day

20

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

The weather it burned in

30°high
47km/h · peak gust
13%lowest humidity

It had gone 59 days without rain (1 mm or more) when it started. Rain came after the fire: 3.7 mm on 11 Sept.

This area had burned before

0% of the perimeter overlaps earlier fires recorded since 2016: 11 ha in 2017.

What happened to each town

  1. Lane where it started
    4,617 ha reached on 20 Aug
    0.4 %

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)
19 Aug 26.1 °C 34 % 46 km/h 0.0 mm High 33
20 Aug after 24.3 °C 23 % 42 km/h 0.0 mm High 32
21 Aug after 29.7 °C 18 % 43 km/h 0.0 mm Very high 39
22 Aug after 27.7 °C 20 % 38 km/h 0.0 mm High 37
23 Aug after 20.7 °C 31 % 41 km/h 0.0 mm High 32
24 Aug after 19.3 °C 34 % 35 km/h 0.0 mm High 29
25 Aug after 20.2 °C 32 % 40 km/h 0.0 mm High 29
26 Aug after 18.0 °C 48 % 45 km/h 0.0 mm High 25
27 Aug after 22.9 °C 33 % 33 km/h 2.7 mm Low 8
28 Aug after 28.6 °C 13 % 37 km/h 0.0 mm High 31
29 Aug after 24.5 °C 28 % 39 km/h 0.0 mm High 31
30 Aug after 18.2 °C 43 % 36 km/h 0.0 mm High 24
31 Aug after 21.1 °C 34 % 35 km/h 0.0 mm High 25
1 Sept after 22.0 °C 26 % 36 km/h 0.0 mm High 28
2 Sept after 25.3 °C 21 % 41 km/h 0.0 mm High 32
3 Sept after 23.5 °C 32 % 38 km/h 0.0 mm High 31
4 Sept after 26.9 °C 15 % 39 km/h 0.0 mm High 37
5 Sept after 27.9 °C 21 % 42 km/h 0.0 mm High 38
6 Sept after 25.9 °C 29 % 40 km/h 0.0 mm High 34
7 Sept after 25.6 °C 25 % 47 km/h 0.0 mm High 36
8 Sept after 20.7 °C 33 % 37 km/h 0.0 mm High 30
9 Sept after 22.7 °C 25 % 37 km/h 0.0 mm High 30
10 Sept after 17.6 °C 43 % 41 km/h 0.0 mm High 26
11 Sept after 13.9 °C 47 % 35 km/h 3.7 mm Very low 4

Before and after, from space

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

Before · 12 Aug 2018
After · 26 Aug 2018

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 · 395Every 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 United States ›

Frequently asked questions

How long did the Terwilliger fire last?
It burned between 19 August 2018 and 19 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 4,610 hectares (46.1 km²). Other tallies, such as daily incident reports, may give slightly different figures.
Which counties burned?
The fire only entered Lane (4,617 ha, 0.4 %).
What was the weather like?
During the fire the temperature reached 29.7 °C, humidity dropped to 13 % and gusts hit 47 km/h. The fire danger index (FWI) reached 39, class Very 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

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.

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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 911.

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.