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View the Zaca Fire in Google Earth.
Locations approximate.


Pacific Southwest Research Station
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Fire Science: Wildfire Monitoring and Prediction

Fire Imaging: Zaca Fire
Zaca Fire, Santa Barbara County, CA
19:21 PDT 17 July 2007

As viewed by the FireMapper™ Thermal-Imaging Radiometer

Click on the image above to view a larger Zoomify image
or view the JPEG version
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Current Image: Thermal mosaic
Ground surface temperatures as viewed from above at 11.9 micrometers wavelength on 17 July 2007, between 19:21 and 19:23 PDT.


Image 1: Thermal Mosaic
Plan view of fire. Warmer tones represent recent or active combustion; areas of light gray are cooling ash or warm bare ground and the low temperatures of unburned forest and cool ground are shown in darker gray (see chart above).

Purple is used to show very warm ground that may or may not be fire-related. Purple pixels immediately adjacent to red pixels can be interpreted to be cooling ash; purple pixels far from any red pixels may be interpreted as solar heating on bare rock.

Click on the image above to view a larger JPEG image
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Image 2: Mosaic Overlay
Topographic view from the south.

No vertical exaggeration.

View the Zaca Fire in Google Earth.
Locations approximate.

Click on the image above to view a larger JPEG image
(opens a new browser window)


Weather conditions at time of data collection :
from NOAA ROMAN system.
Past Weather Conditions for FGMC1
Observations prior to selected time: July 17, 2007 - 20:00 PDT
Weather Conditions at July 17, 2007 - 19:14 PDT

19:14 24 Hour Max 24 Hour Min
Temperature 69.0° F 77.0 at 12:14 64.0 at 1:10
Dew Point 49.6° F 51.5 at 12:14 29.7 at 22:14
Relative Humidity 50% 50 at 6:14 23 at 22:14
Wind Speed 0 mph 5 at 21:14 0 at 0:10
Wind Gust 6 mph 12 at 22:14 0 at 4:10
Solar Radiation 29.0 W/m*m 990.0 at 13:14 0.0 at 21:14
Fuel Temperature 73.0° F 93.0 at 13:14 59.0 at 6:14
10 hr Fuel Moisture 7 gm 8 at 8:14 7 at 22:14
Battery voltage 12.90 volt 13.10 at 10:14 12.50 at 6:14

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: 2007-08-29