The Rocky Mountains squeeze most of that water out. Here in the midwest, we get Gulf hot wet air swirling up, and cold Canadian air swirling down, and Wham! we

The Rocky Mountains squeeze most of that water out. Here in the midwest, we get Gulf hot wet air swirling up, and cold Canadian air swirling down, and Wham! we get thunderstorms where they meet! Curiously the water that rains on the East Coast is a sort of rolling storm of rain/evaporation/wind/rain-but-further-east. A recycling of the same bolus of water over and over again. Been going on for millions of years.