United States (USA) - Washington south of approximately 47°30'N - counties of Adams; Asotin; Benton; Clark; Columbia; Cowlitz; Franklin; Garfield; Grant; Grays Harbor; Kittitas; Klickitat; Lewis; Mason; Pacific; Pierce; Skamania; Thurston; Wahkiakum; Walla Walla; Whitman; Yakima.