The processes you used to determine the direction of wind over Oahu work for other areas with mountains as well. Examine the topography of the Sierra Nevada Mountains east of California's central valley on the shaded relief map below. (North is up.)

  !   Click the buttons to show average annual precipitation levels for various locations in California and western Nevada.

11. Drawing on what you learned from the case of Oahu, in what direction do you predict the wind blows over California? Describe the evidence you used to make your prediction.