16-inch % Plant Available Soil Moisture

Idabel Broken Bow Mt. Herman 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 Bowlegs Ada Byars Pauls Valley Ringling Hectorville Bristow Shawnee Ketchum Ranch Washington Norman Chandler Spencer OKC East OKC North Waurika Ninnekah 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
Plotted values depict the percent of maximum plant available soil moisture currently in the top 16" of the soil profile. In the growing season (May through October), values <= 20% are strongly associated with large wildfires (>= 1000 acres), given suitable fire weather conditions, because low soil moisture reduces fuel production and live fuel moisture, which increases wildfire risk. In contrast, in the dormant season (November through April), the link between large wildfires and plant available soil moisture is weaker because dead fuels predominate and, consequently, fire weather is the major driver for wildfires. Finally, elevated plant available soil moisture (> 50%) during the spring and early summer months results in increased fuel production and, consequently, increased probability of large fires in the subsequent dormant season given suitable fire weather. This map is updated every 30 minutes with the latest 24-hr averages; values may occasionally go above 100% or below 0% due to local soil site and weather conditions.