* Affected Area: Okanogan Valley (Zone 703) and Waterville Plateau (Zone 706).
* Winds: Southwest 15 to 25 mph with gusts up to 35 mph, becoming northwest 10 to 20 mph with gusts up to 30 mph early Thursday evening.
* Relative Humidities: 16 to 24 percent.
* Impacts: Rapid fire spread is possible with any new or ongoing fires.