...Critical to Extreme Fire Weather conditions on Sunday across the western half of Oklahoma and all of western north Texas... .The combination of strong gusty winds, warm and dry weather and dry vegetation will cause Critical to Extreme Fire Weather conditions on Sunday. ...FIRE WEATHER WATCH REMAINS IN EFFECT FOR SUNDAY FOR BREEZY WINDS AND LOW RELATIVE HUMIDITY FOR THE WESTERN HALF OF OKLAHOMA AND ALL OF WESTERN NORTH TEXAS... * WINDS...Southwest to west 20 to 30 mph with gusts up to 45 mph. * RELATIVE HUMIDITY...As low as 14 percent. * TEMPERATURE...Highs 55 to 70 degrees F. * IMPACTS...Fires that develop will likely spread rapidly. Outdoor burning is strongly discouraged.