Fire Situation Report – March 5, 2018


Oklahoma Department of Agriculture, Food and Forestry - Forestry Services

PROTECTION AREA STATISTICS* for Reporting Period 0800 thru 0800, 03/02/18 thru 0800 03/05/18 

NE Area – 5 Fires Burned 124 Acres (Cause: 3-Escaped Prescribed Fire, 2-Incendiary)

EC Area – No New Activity

SE Area – 1 Fire Burned 3 Acres (1-Incendiary)

Large / Significant Fire Activity within the Protection Area: No New Activity

 Fire Activity with OFS Response Outside of the Protection Area:

  • 1 Fire Burned 57 Acres

OFS Prescribed Fire Activity: No New Activity

FIRE DEPARTMENT STATISTICS from www.firereporting.ok.gov recorded on 03/04/18 thru 03/05/18 

No New Activity Reported

Statewide Discussion:

A Red Flag Warning is in effect for a large portion of Oklahoma along and west of a line from Ottawa County to Tillman County and a Fire Weather Watch is in effect on Tuesday for an expanded area. Very dry and windy conditions following a cold front will support highly receptive fine-fuels and rapid to extreme rates of fire spread. Any fire that starts will grow quickly and fires that become established will be very difficult to contain. Critical fire weather will occur in a broad swath across the state with the extreme indices in much of western Oklahoma and critical into northern and central counties. Areas of eastern Oklahoma will again return to fire danger with increasing fire occurrence expected.

Western Oklahoma – Along and west of US 81, where the driest composite fuel moisture is present, relative humidity values will fall to 6-13%. Temperatures in the upper-50°’s to mid-60°’s and generally clear skies will support fine fuel moisture values of 3% this afternoon compounded by marginal moisture recovery last night. Probability of ignition will be 80% with short-range spotting expected. Northwest winds 20-27 mph gusting near 40 mph at times will drive potential for extreme rates of fire spread. Grass fuels will support rates of fire spread of 200-300 ft/min (2.5-3.5 mph) on average with flame lengths 10-20 ft. Expect more rapid rates of fire spread in dense grasses and where topography is aligned with wind direction. Grass and Redcedar mixed fuels will exhibit rates of spread 110-150 ft/min with torching and spotting anticipated.

Central Oklahoma – Between US 81 and State Road 48, temperature 63°-68° and relative humidity values 10-20% will encourage very receptive fine fuels in the 2-5% range. The burning period will develop rapidly today given only fair overnight moisture recovery and northwest winds 18-25 mph gusting 35 mph will support very rapid rates of fire spread. Grass-dominated fuels will support rates of spread 180-300 ft/min (2 – 3.5 mph) with head fire flame lengths nearing 20 ft. Grass and brush fuels will support rates of spread in excess of 100 ft/min with potential for group torching and short-range spotting. In areas north of I-40 expect fire behavior observations to be consistently near the upper end of the fire behavior predictions.

Eastern Oklahoma – East of State Road 48 recent rains have greatly improved composite fuel moisture values; however very dry air and stout winds will serve to increase both availability and receptiveness of dormant fie fuels. Very good overnight moisture recovery will quickly erode as temperatures warm to 64°-72° and relative humidity values range from 17% north to 30% in the southeast supporting fine fuel moisture values 4-7% where fuel sheltering is not present. Northwest winds 15-20 mph this afternoon along with gusts in excess of 25 mph will support rapid rates of fire spread in grass fuels. Timber fuels will be subjected to drying conditions today; however only moderate rates of fire spread are expected today with leaf litter retaining moisture from recent rains. The tall-grass dominated fuels north of I-40 will likely support extreme rates of fire spread eclipsing 300 ft/min (3.5 mph) and flame lengths at the head of going fires 16-22 ft.

Tomorrow will present even more challenging fire weather/danger boosted by intense drying today and continued strong, northwest winds. Fire danger will be present through the week with dry conditions expected. Wet ground should be scouted in advance of committing any firefighting apparatus insuring that engines and equipment are not committed to areas where they may get stuck in unburned fuels risking burnover.

Resources: Resource Hotline (800) 800-2481

  • 2 – OFS Task Forces
  • 1 – Air Attack Platform
  • 1 – Type 1 Air Tanker and Aerial Supervision Module
  • 2 - Single Engine Air Tankers
  • 2 - Type 1 Helicopters
  • OHP/OFS Aerial Observation Platform

Burn Ban Status:

For the most current information on Burn Bans click on the following link: http://www.forestry.ok.gov/burn-ban-info