The National Weather Service in Billings has issued a Red Flag Warning...which is in effect from noon to 9 PM MDT Friday. The Fire Weather Watch is no longer in effect. * IMPACTS: Low humidities, unseasonably warm temperatures, and strong gusty winds will create erratic fire behavior for new or existing fire starts. * AFFECTED AREA: In North Central WY Fire Zones...274...284. In South Central MT Fire Zones...123...124...126. * COUNTIES AFFECTED: In Central MT...Wheatland. In North Central WY...Big Horn...Johnson...Sheridan...Washakie. In South Central MT...Carbon...Park...Stillwater...Sweet Grass. In Southwest MT...Gallatin. * WIND: Southwest 15 to 25 mph with gusts up to 45 mph. * HUMIDITY: As low as 9 percent. * TEMPERATURES: Up to 88. * ADDITIONAL DETAILS: The worst conditions are expected across the lower to middle elevations in fine fuels. The strongest winds are expected in mountain locations and the foothills west of Billings. Zone WY274 will see lower wind speeds. A Red Flag Warning means that critical fire weather conditions are either occurring now, or will shortly. A combination of strong winds, low relative humidity, and warm temperatures can contribute to extreme fire behavior.