10-hr Dead Fuel Moisture

Idabel Broken Bow Wister Talihina Clayton Cloudy Hugo Antlers Lane Durant Wilburton Stigler Sallisaw Webbers Falls Cookson Westville Tahlequah Eufaula McAlester Stuart Centrahoma Tishomingo Holdenville Madill Burneyville Ardmore Newport Fittstown Sulphur Haskell Porter Okmulgee Inola Bixby Tulsa Okemah Seminole Ada Byars Pauls Valley Ringling Hectorville Bristow Shawnee Ketchum Ranch Washington Norman Chandler Spencer OKC East Waurika Chickasha Acme Oilton Minco Guthrie Walters Apache Grandfield Medicine Park Fort Cobb Tipton Altus Hobart El Reno Hinton Perkins Marena Stillwater Lake Carl Blackwell Pawnee Red Rock Marshall Kingfisher Watonga Weatherford Bessie Jay Pryor Skiatook Wynona Burbank Miami Vinita Nowata Talala Copan Foraker Newkirk Blackwell Mangum Hollis Erick Putnam Butler Cheyenne Breckinridge Lahoma Fairview Seiling Camargo Medford Cherokee Alva May Ranch Freedom Woodward Arnett Buffalo Slapout Beaver Hooker Goodwell Boise City Kenton Elk City Valliant Eva Yukon
The % moisture content on a dry-weight basis of 10-hour dead fuels as calculated by a calibrated version of the Nelson dead fuel moisture model. Calculated values can range from 1% to 60%. Ten-hour fuels are the smaller diameter dead fuels in the 0.25" to 1" diameter range. They also respond quickly to changing weather conditions, but not as quickly as do 1-hour fuels. These fuels include roundwood and the layer of litter on forest floors extending, roughly, from 0.25" below the surface to 1" deep. For prescribed fire, the preferred range of 10-hour dead fuel moisture is from 7 to 20%. Below 7%, spot fires become a problem and above 20% there will be problems in maintaining the fire due to too much moisture in the 10-hour fuels. To understand the influence of 10-hour dead fuel moisture on prescribed burning and wildfire, consult OK-FIRE Basics for Prescribed Burning and OK-FIRE Basics for Fire Danger. Note that since the Nelson model calculations are a function of the forecast weather conditions, inaccuracies in the NAM weather forecast will lead to inaccuracies in the 10-hour dead fuel moisture forecast.