DCHP-1 Online
Chinook sky 
a sky characterized by the striking cloud formations framing the Chinook arch.
See also: Chinook clouds Chinook arch
- 1810 (1897) [. . . in the S.W., directly over the Rocky Mountains . . . I have observed the sky to be perfectly clear for many days past, while every other part of the heavens is overcast with thick black clouds.]
- 1958 [The] vaguely luminous cloudscapes of the Pacific have here given way to the riotously magnificent Chinook skies of the eastern foothills.
- 1810 (1897) [. . . in the S.W., directly over the Rocky Mountains . . . I have observed the sky to be perfectly clear for many days past, while every other part of the heavens is overcast with thick black clouds.]