Thousands of acres have burned in wildfires across Oklahoma since Wednesday and conditions are set to worsen Friday, when the level of fire danger has been categorized as “historic.”

Describing conditions Friday as "fairly unique" and "almost historic," Drew Daily, fire staff officer for the Oklahoma Forestry Services, said predicted weather conditions combined with dry fuel in areas with severe drought will allow for any fires that spark to quickly spread.

Temperatures Friday are expected to climb into the low 80s for parts of the state, with wind gusts up to 52 mph and relative humidity as low as 7 percent, according to the National Weather Service, which has labeled the fire weather danger as historic, the most severe category.

Most of western and central Oklahoma are under a red flag warning for Friday from 10 a.m. to 10 p.m., according to the weather service.