The National Weather Service in Grand Forks has issued a Red Flag Warning for wind and low relative humidity, which is in effect from 11 AM to 10 PM CDT Sunday. A Fire Weather Watch has also been issued. This Fire Weather Watch for wind and low relative humidity is in effect from Monday afternoon through Monday evening. The Fire Weather Watch is no longer in effect for Sunday as it is replaced by a Red Flag Warning. * AFFECTED AREA. In Minnesota, West Polk, Kittson, Roseau, Lake Of The Woods, West Marshall, East Marshall, North Beltrami, Pennington, Red Lake, East Polk and North Clearwater. In North Dakota, Towner, Cavalier, Pembina, Benson, Ramsey, Eastern Walsh, Eddy, Nelson, Grand Forks and Western Walsh. * WINDS. South 20 to 30 mph with gusts up to 40 mph. * RELATIVE HUMIDITY. As low as 15 percent. * IMPACTS. Any fires that ignite will spread rapidly and become difficult to control. Outdoor burning is not recommended. * ADDITIONAL DETAILS. Southerly winds will continue to increase over the weekend, with extremely warm temperatures arriving by Sunday. The hot temperatures, low relative humidity values, and strong southerly winds bring critical fire weather conditions today as well as Sunday afternoon. Focus for worst fire weather conditions is on Sunday as this is the day with the lowest RH, strongest winds and highest temperatures.