What rain shadow is created by Sierra Nevada?

The Sierra Nevada mountain range creates a rain shadow effect primarily affecting the eastern side of the range. As moist air from the Pacific Ocean rises over the mountains, it cools and condenses, leading to precipitation on the western slopes. Consequently, the eastern slopes, including areas like the Great Basin, receive significantly less rainfall, resulting in arid conditions and desert-like environments. This contrast highlights the impact of topography on regional climate patterns.