1000-hr Dead Fuel Moisture

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The 1000-hr Dead Fuel Moisture map displays the % moisture content (dry-weight basis) of 1000-hour dead fuels as calculated by a calibrated version of the Nelson dead fuel moisture model. Calculated values can range from 1% to 32%. 1000-hour fuels include roundwood with diameters of 3-8" as well as organic materials beneath the surface at roughly 4-12" depths. 1000-hour fuels respond more slowly than 100-hour fuels to changing weather conditions and are excellent indicators of extended dry or wet periods. Low 1000-hr dead fuel moisture during the growing season is indicative of drought and usually associated with increased summer wildfire activity. This map is updated every 15 minutes.