Fire Situation Report – December 11, 2017


Oklahoma Department of Agriculture, Food and Forestry - Forestry Services

 PROTECTION AREA STATISTICS* for Reporting Period 0800 thru 0800, 12/08/17 thru 0800 12/11/17 

NE Area – 5 Fires Burned 10.5 Acres (4-Incendiary, 1-Escaped Debris)

EC Area – 3 Fires Burned 90 Acres (Cause: 3-Incendiary)

SE Area – 7 Fires Burned 39.1 Acres (Cause: 7-Incendiary)

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

 Fire Activity with OFS Response outside the Protection Area: No New Activity

 OFS Prescribed Fire Activity: No New 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 www.firereporting.ok.gov recorded on 12/08/17 thru 12/11/17

  • 1 Fire Burned 20 Acres (Cause: 1-Debris) Tecumseh FD Reporting(Mutual Aid)
  • Additional Fire Activity Noted through Media Outlets

Statewide Discussion:

Red Flag Warning in effect today for all of northwestern, north-central and northeastern Oklahoma from 10:00 AM through 6:00 PM in the eastern portion of the warned area and 11:00 AM through 6:00 PM in the western half of the warned area. Warm temperatures, very dry air and gusty winds will promote rapid rates of fire spread.

Relative humidity values in the single-digit and teens yesterday afternoon promoted critically low fine-dead fuel moisture and increased initial attack activity. Overnight moisture recovery was marginal to poor with some relative humidity observations at 6:00 AM in the 20-30% range. This accelerated drying will result in an extended burning period today, and with near-critical to critical fire weather in place this afternoon fire behavior is expected to be problematic where continuous fuels and topography are aligned with winds. Unsheltered cool-season grasses exposed to hard-freeze conditions in recent nights have also been pushed into dormancy with rapid curing due to the very dry air mass in place.

Panhandle/Northwest Oklahoma: Temperatures 60°-65° under clear skies and afternoon relative humidity values 13-17% will drive fine-dead fuel moisture values into the 3-5% with Probability of Ignition Values at 70%+. North winds 15-20 mph with gusts near 25 mph will drive rates of fire spread nearing 300 ft./min. and 15-20 ft. flame lengths in ungrazed fuels typical of the area.

North-Central / Northeastern Oklahoma: Many of the counties in north-central and northeastern Oklahoma will realize the highest fire danger indices observed since early spring of this year. Above normal temperatures generally 65°-68° and relative humidity values 16-20% prompting fine-dead fuel moisture values this afternoon of 5% with broad coverage and pockets of 4% possible. North to northwest winds 15-20 mph gusting at times in excess of 25 mph will push potential for 200-250 ft./min. and 11-15 ft. flame lengths in unsheltered grasses. Expect the potential for problematic fire behavior in brush fuel models including single-tree and group torching during the peak of the burning period.

South of I-40: While Red-Flag criteria is not likely to be met south of I-40 with sustained wind speeds around 10 mph, very-high fire danger indices will be in place this afternoon with above normal temperatures and very dry air. Temperatures in 66°-73°, clear skies and relative humidity values 16-20% will result in very receptive fine-fuels at 5% with some 4% observations likely this afternoon. West to northwest winds around 10 mph gusting 14-18 will drive moderate rates of fire spread; however larger fuels are very dry across the area and extended periods of mop-up should be expected to achieve containment.

Resources:

Aerial Observation

National Guard Helicopter

County Declared Burn Bans:

Adair County through 12/20/17 - Cimarron County through 12/17/17

Alfalfa County through 12/10/17 - Coal County through 12/13/17

Atoka County through 12/17/17 - Love County through 12/18/17

Carter County through 12/17/17 - Sequoyah County through 12/13/17 

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