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Seep Fire, July 2018 Coconino

Out · last measured on 17 Jul 2018

The fire started on 17 July 2018 in Coconino, United States, and satellites saw it burning for 1 day. United States agencies (MTBS / NIFC) mapped an official burnt perimeter of 2,032 hectares, spread across a single county.

It is the 129th largest in Arizona since 2016 (of 380 with a page). Number 201 in United States in 2018, of 511.

Burnt area
2,032ha
official perimeter (MTBS / NIFC)
Duration
1day
17 Jul 2018 – 17 Jul 2018
Municipalities hit
1
counties
Started on
17 Jul
2018
Heat detections
147
in a single hotspot: 116 MW
Danger at start
12
Moderate · FWI index

Where it burned

HOTSPOTS BY DAY 17 Jul17 Jul

The weather it burned in

33°high
54km/h · peak gust
8%lowest humidity

It had gone 0 days without rain (1 mm or more) when it started. Rain came after the fire: 1.7 mm on 14 Aug.

This area had burned before

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

What happened to each town

  1. Coconino where it started
    2,019 ha reached on 25 Jul
    0.0 %

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)
17 Jul 28.8 °C 29 % 33 km/h 0.3 mm Moderate 12
18 Jul after 27.7 °C 31 % 42 km/h 5.2 mm Very low 2
19 Jul after 27.9 °C 35 % 43 km/h 7.2 mm Very low 3
20 Jul after 27.9 °C 26 % 35 km/h 1.4 mm Low 7
21 Jul after 26.4 °C 26 % 31 km/h 1.9 mm Low 7
22 Jul after 29.5 °C 25 % 34 km/h 0.1 mm Moderate 15
23 Jul after 31.6 °C 18 % 33 km/h 0.9 mm Moderate 18
24 Jul after 31.0 °C 17 % 49 km/h 0.5 mm High 28
25 Jul after 31.3 °C 13 % 46 km/h 0.0 mm High 34
26 Jul after 31.4 °C 13 % 34 km/h 0.2 mm High 30
27 Jul after 30.7 °C 16 % 34 km/h 0.4 mm High 36
28 Jul after 30.0 °C 20 % 40 km/h 2.8 mm Moderate 15
29 Jul after 28.1 °C 25 % 38 km/h 4.3 mm Low 6
30 Jul after 30.8 °C 13 % 39 km/h 0.0 mm High 25
31 Jul after 31.3 °C 10 % 45 km/h 0.0 mm Very high 38
1 Aug after 29.8 °C 22 % 43 km/h 3.1 mm Moderate 13
2 Aug after 27.1 °C 21 % 54 km/h 2.5 mm Moderate 14
3 Aug after 27.0 °C 30 % 42 km/h 0.9 mm Moderate 20
4 Aug after 29.4 °C 23 % 38 km/h 0.2 mm High 26
5 Aug after 30.3 °C 14 % 52 km/h 0.0 mm Very high 39
6 Aug after 32.1 °C 8 % 33 km/h 0.0 mm Very high 40
7 Aug after 32.6 °C 8 % 34 km/h 0.0 mm Very high 42
8 Aug after 30.8 °C 11 % 48 km/h 0.0 mm Very high 49
9 Aug after 29.4 °C 16 % 48 km/h 1.9 mm High 34
10 Aug after 29.7 °C 16 % 44 km/h 9.1 mm Low 7
11 Aug after 26.2 °C 22 % 32 km/h 1.5 mm Moderate 16
12 Aug after 26.9 °C 21 % 35 km/h 1.6 mm Moderate 18
13 Aug after 27.3 °C 21 % 39 km/h 2.2 mm Moderate 16
14 Aug after 28.0 °C 23 % 42 km/h 1.7 mm Moderate 16

Before and after, from space

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

Before · 10 Jul 2018
After · 24 Jul 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 · 147Every 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 Seep fire last?
It burned between 17 July 2018 and 17 July 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 2,032 hectares (20.3 km²). Other tallies, such as daily incident reports, may give slightly different figures.
Which counties burned?
The fire only entered Coconino (2,019 ha, 0.0 %).
What was the weather like?
During the fire the temperature reached 32.6 °C, humidity dropped to 8 % and gusts hit 54 km/h. The fire danger index (FWI) reached 49, 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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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.