OKLAHOMA CITY (AP) - More than half the counties in Oklahoma are under a red flag warning as extreme fire conditions are expected through Wednesday.

Oklahoma Forestry Services officials say the warning affects 44 counties - particularly in northwestern Oklahoma, where some wind gusts could exceed 40 mph. Officials say warmer temperatures and dry air have created conditions for a wildfire to spread rapidly

State Forester George Geissler says the conditions are expected to build through the middle of the week. He asked residents on Monday to avoid burning outdoors and contact the nearest fire department if they see fire or smoke.

Forestry officials also say they're coordinating with local fire departments and staging personnel in central and western Oklahoma to prepare to fight any wildfires that develop.