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Hobble Fire

19 August

18 August


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 Piper Navajo remote sensing aircraft

Fire Science

Wildfire Monitoring and Prediction
Fire Imaging
Hobble Fire, Sweet Grass County, MT
18 August 2003

As viewed by the FireMapper™ Thermal-Imaging Radiometer

Images were collected from the PSW Airborne Sciences Aircraft and disseminated in part by satellite communications in near-real time. FireMapper measures the radiance of emitted thermal-infrared light, which readily penetrates smoke. False-color images shown here depict the apparent surface temperature (in Celsius) as estimated from radiance and a simple black-body model. Warmer tones represent recent or active combustion; areas of gray are cooling ash or warm bare ground (see chart below). Low temperatures of unburned forest and cool ground are shown in green. Images have been geographically referenced. Vertical exaggeration in 3-d views is 1.5 to one unless otherwise noted.


Location Map

Hobble Fire (courtesy of Active fires are labeled in white.

Click on the image above to view a larger JPEG image
Fire Imagery

The following color-coded images depict apparent ground surface temperatures in Celsius. Roads, streams, and the text in the background are from a 1:24,000 topographic map.


Image 1:
Ground surface temperatures as viewed from above at 11.9 micrometers wavelength on 18 August 2003, between 17:21 and 17:32 UMT.

Click on the image above to view a larger JPEG image

Image 2:
Image from above, on a shaded relief map.

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Image 3:
Topographic view as seen from the northeast of Image 1.

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MONDAY AUGUST 18, 2003 - 0800 MDT. (Courtesy of

HOBBLE, Southern Land Office, Montana Department of Natural Resources & Conservation. A
Type 2 Incident Management Team (Larsen) is assigned. This fire is in timber and grass, six miles east of Greycliff, MT. This fire was declared contained on August 16. However, wind gusts of 30 miles per hour caused the fire to jump containment lines. The fire made significant runs to the east. Stephens Hill Road is closed and residences along that road are evacuated. Two
residences and five outbuildings were lost. Structure protection is in place for eight residences.


Archives of past fires: 2008 2007 2006 2005 2004 2003 2002 2001

Forest mapping: 2008 2007 2006 2005 2004 2003 2002 2001

FireMapper™ Specifications: Instrument

FireMapper™ References: Publications

FireMapper™ Tools- image analysis software: ftp downloads page

For Further Information: contact Dr. Philip J. Riggan


FireMapper™ has been developed through a Research Joint Venture with Space Instruments, Inc., and support from the National Fire Plan, Forest Service International Programs, the U.S. Department of Agriculture, the Joint Fire Sciences Program, and the U.S. Agency for International Development.
Disclaimer: Trade names, commercial products, and enterprises are mentioned solely for information. No endorsement by the U.S. Department of Agriculture is implied.

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 Last Modified: 2005-03-03