NWS Forecast Office Tulsa, OK

Near critical fire weather conditions are expected Thursday. Locally critical conditions may occur in parts of Osage and Pawnee counties. Very low relative humidity with strong and gusty winds are expected. A gradual wind shift from sunset, lasting through midnight will impact any ongoing fire fighting efforts. A Red Flag Warning is now in effect for much of eastern Oklahoma to the north of I-40, as well as far northwest Arkansas.