STERLING — Higher than normal temperatures, low relative humidity and windy conditions could lead to rapid fire spread for fuels ready to burn Wednesday afternoon, according to the National Weather Service office.

Northeast Colorado, including Logan and Sedgwick counties, was placed in a red flag warning from noon to 6 p.m. Wednesday. A red flag warning means critical fire weather conditions are occurring now or will occur soon.

Wind speeds will be sustained from the north at 15 to 25 mph, with gusts up to 35 mph. Relative humidity will be as low as 12 percent.

Cheyenne, Kimball, Banner, Morrill, Scotts Bluff and Laramie counties are under fire weather watch Wednesday afternoon.

A combination of strong winds, low relative humidity and warm temperatures can contribute to extreme fire behavior. Meteorological services advise avoiding any burning or outdoor activity that could produce a spark and start a forest fire.