Final answer:
Yearly precipitation patterns in the U.S. vary by region, with the Pacific coast experiencing significant rain, Great Basin being drier, the Plains showing a gradient of rainfall from east to west, Eastern U.S. receiving ample rainfall, Southwest being arid, and Florida having high rain due to its tropical climate.
Step-by-step explanation:
The yearly precipitation patterns for the various regions in the United States are influenced by a variety of geographical and atmospheric conditions. The Pacific region, particularly along the coastal area, experiences significant precipitation due to the oceanic air masses that bring moisture to the coast. As for the Great Basin, this area sees much less precipitation because it lies in the rain shadow of the Sierra Nevada and Cascade mountain ranges.
The Plains area is subject to a range of precipitation patterns, with generally more rain in the eastern sections and becoming drier towards the west. The Eastern region typically receives ample rainfall across all seasons due to the flow of moist air from the Atlantic Ocean. The Southwestern region, including areas like Arizona and New Mexico, is typically arid with low annual precipitation, influenced by the subtropical high-pressure systems.Florida, being a tropical region and influenced by the Atlantic Ocean and the Gulf of Mexico, experiences high rainfall, particularly in the summer months with the occurrence of afternoon thunderstorms and the potential for tropical cyclones.