GFMC: Forest Fires in the United States

Forest Fires in the United States

6 Dezember 2001


Wildland Fire Update
The National Interagency Fire Center (NIFC) based in Boise (Idaho) provides key information on current wildland fire situations, related information and background materials. The following information is updated daily and can be accessed directly:

  • State-by-State daily and year-to-date summary of fire activities
    http://www.nifc.gov/fireinfo/nfn.html
  • Year-to-date State-by-State total number of wildland fires and area burned (table)
    http://www.nifc.gov/fireinfo/nfnmap.html
  • Daily locations of large fires (map)
    http://www.nifc.gov/fireinfo/firemap.html

The National Interagency Coordination Center (NICC)  provides daily situation reports. These reports include:

  • Incident Management Situation Reports (fires and area burned reported to NICC). The files include current, previous and archived reports
  • Prescribed Fire and Wildland Fire Use (year-to-date fires and area burned reported to NICC, posted weekly on Monday mornings)
    http://www.nifc.gov/news/RXWFUYTD.htm

Fire Weather & Fire Danger Information
The Wildland Fire Assessment System (WFAS) is a contribution of “The Fire Behavior Research Work Unit”, Missoula (Montana USA). The broad area component of the Wildland Fire Assessment System (WFAS) generates maps of selected fire weather and fire danger components.

Fire Danger (Potential) is a normalized adjective rating class across different fuel models and station locations. It is based on information provided by local station managers about the primary fuel model, fire danger index selected to reflect staffing level, and climatological class breakpoints. Low danger (Class 1) is green and extreme potential (Class 5) is red.

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Fire danger maps for the United States for 5 December 2001 (observation time) and 6 December 2001 (forecast)
(Source: WAFS)

Dead fuel moisture responds solely to ambient environmental conditions and is critical in determining fire potential. Dead fuel moistures are classed by timelag.

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10-HR Fuel Moisture

100-HR Fuel Moisture

1000-HR Fuel Moisture

Fuel moisture maps for conterminous US, 5 December 2001
(Source: WAFS)

The Keetch-Byram Drought Index (KBDI) is a soil/duff drought index. Factors in the index are maximum daily temperature, daily precipitation, antecedent precipitation, and annual precipitation. The index ranges from 0 (no drought) to 800 (extreme drought) (details).

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Keetch-Byram Drought Index Maps for conterminous US, 5 December 2001
(Source: WAFS)

For more information on the recent fire situation see: Recent Media Highlights on Fire, Policies, and Politics ,especially  several articles since 1 November 2001.

Near-real time satellite images
Operational Significant Event Imagery (OSEI)
The following significant events were identified by Satellite Analysis Branch meteorologists and reviewed by the OSEI support team of the National Oceanic and Atmospheric Administration (NOAA):

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NESDIS/OSEI NOAA-12 POES AVHRR LAC satellite images, 4 December 2001.
Heat signatures (red) are visible from
Image1: fires burning in Georgia and Montana.
Image 2: fires burning in West Virginia, Kentucky, Virginia, and
Tennessee (00:09 UTC)
Image 3:
fires burning in West Virginia, Virginia, North Carolina,
and Kentucky (23:46 UTC).
(Source: OSEI/NOAA)

Long-range weather forecasts
National Weather Service
Long-range, 30-day weather forecasts are predicting above-normal temperatures for the southern tier of states from southern California to Florida and throughout the Midwest (see 30 and 90-day forecast maps).

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30 and 90-day temperature and precipitation forecast maps (December and December to February 2001)
(Source: National Weather Service)

The Florida Division of Forestry gives the following long-range Wildfire Season Forecast September – March 2002  for Florida:
“A return to near normal conditions in the equatorial Pacific Ocean marks the end of the prolonged La Niña event that brought very active fire seasons to the state the past few years. Normal to slightly warmer sea surface temperatures in the Pacific will bring us our first “normal” winter in a while, and if sea surface temperatures continue to slowly warm we may get above normal rainfall this winter.”

For further information see: Wildfire Season Forecast of the Florida Division of Forestry
For further information you may also see to the U.S. Drought Monitor.

For background information on the Southern Area see the Edited Version of the Southern Area Intelligence Briefing Paper for 22 April 2001.


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