...WINDY AND BREEZY WITH CRITICAL RELATIVE HUMIDITY SATURDAY... .Windy conditions will develop with overlapping low relative humidity values Saturday across the Columbia Basin and Eastern Wallowa County. * AFFECTED AREA...Fire Weather Zones 691 Lower Columbia Basin of Oregon, 691 Lower Columbia Basin of Washington, 693 Canyon Grasslands of Wallowa County and 693 Southeast Washington Grande Ronde Valley. * TIMING...From Saturday morning through Saturday evening. * WINDS...West 20 to 30 mph with gusts up to 40 mph. * RELATIVE HUMIDITY...As low as 23 percent. * IMPACTS...Any fire that develops will catch and spread quickly. Outdoor burning is not recommended.