...WARM, DRY, AND BREEZY CONDITIONS EXPECTED TO DEVELOP ACROSS PORTIONS OF CENTRAL AND NORTH CENTRAL WASHINGTON SATURDAY... .A weak wave moving into southern British Columbia Saturday will bring breezy southerly winds and a drying airmass to central Washington. Winds on the Waterville Plateau and the western Columbia Basin will shift northwesterly in the evening. Winds will remain breezy overnight into Sunday with fair to poor humidity recoveries. * Affected Area: Waterville Plateau (Zone 706) and Western Columbia Basin (Zone 707). * Winds: Southwest 10 to 20 mph with gusts up to 30 mph. Winds will shift northwesterly in the evening hours. * Relative Humidities: 12 to 22 percent. * Impacts: Rapid fire spread is likely with any new or ongoing fires.