Fire Situation Report – October 8, 2015


Oklahoma Department of Agriculture, Food and Forestry
Oklahoma Forestry Services

PROTECTION AREA STATISTICS* for Reporting Period 0800 thru 0800, 10/07/15 thru 10/08/15

NE Area – No Activity
EC Area – No Activity
SE Area – 7 Fires Burned 27.5 Acres (7-Incendiary)

Large Fire Activity within the Protection Area: No Activity Fire Activity with OFS Response outside the Protection Area: No ActivityOFS Prescribed Fire Activity: No Activity

* Protection Area Statistics do not reflect local fire department’s fire run information. Statistics are for the ODAFF-Forestry Services’ fifteen county Fire Protection Area in eastern Oklahoma unless otherwise noted in the Discussion section of this report.

FIRE DEPARTMENT STATISTICS** from recorded on 10/07/15 thru 10/08/15

1 Fire Burned 5 Acres (Cause: 1-Debris) Newcastle FD Reporting

** - These statistics are from Fire Departments that have recorded their information on the Oklahoma, Forestry Services web-based Fire Reporting System. Totals do not reflect the total acres burned or total number of fires that have occurred in Oklahoma.

Statewide Discussion:

The highest fire danger continues to reside in southeast Oklahoma from Hwy. 69 east to the state line including parts of Bryan, Choctaw, Atoka, Pushmataha Counties and McCurtain County in its entirety. However, light winds will be present greatly reducing potential rates of fire spread. KBDI values continue to rise in the area as warm temperatures prevail, days separated from wetting rains increase and evapotranspiration depletes available moisture. The warm, dry conditions will continue today with temperatures 87°-90°. Light winds and relative humidity struggling to fall below 40% will moderate the threat of significant wildfire events.

Rains that lingered into late morning yesterday in the Panhandle and northwest Oklahoma and elevated relative humidity in the area will degrade fire danger today in large part from Ellis County north and west. Warm and dry weather will be present through the day today across the bulk of the state, but again light winds and modest relative humidity values will limit potential fire danger. Forecasts indicate a cold front edging into northern sections of the state later this evening that holds some potential for precipitation.

Effects of Wind on Rate of Spread (ROS) and Flame Length (FL)…Fire behavior is produced by a combination of several inputs to the Fire Environment broadly grouped into Fuels, Weather and Topography. Of the weather elements, wind is significant in that it determines direction of spread and strongly influences rate of spread. Additionally, wind pumps oxygen into the mix promoting accelerated combustion, and wind can also loft embers or fire-brands that have potential to ignite spot fires.

We have been fortunate through the beginning of autumn that we have had no significant wind events or days where sustained winds have posed a threat. Fuel conditions have become increasingly receptive, especially in counties along the Red River where Keetch-Byram Drought Indices are strengthening, but light winds have afforded opportunity for successful initial attack. That being said, let us take a look at the wind’s effect on fire behavior. Below is an illustration of the changes in fire behavior at the head of a fire produced with increasing mid-flame wind input in both timber fuels and grass fuels given typical fuel moistures and topography in Oklahoma:


     2 mph  
     5 mph  
    10 mph   
    15 mph  
 Grass Fuels
   Flame Length
       9 ft.
    16 ft.
      26 ft.
     34 ft. 
     Rate of Spread
   33 ft./min   
    113 ft./min   
      315 ft.
 Timber Fuels 
   Flame Length
        3 ft.
       5 ft.
      7 ft.
      9 ft.
     Rate of Spread    
 3,5 ft./min
  9 ft./min.
  25 ft./min  
  40+ ft./min.


Remember… ONLY YOU can prevent wildfires! Enjoy Oklahoma’s wildlands responsibly.

Report any suspicious wildland fire activity on the Arson Tip Line: 1-866-662-7766 (1-866-NO ARSON).

Prepared by: Drew Daily, Fire Staff Forester, Oklahoma Department of Agriculture, Food and Forestry - Forestry Services