As the storm systems move across the Rocky Mountains, they kind of get wrung out like a sponge, and as they get into the Plain states and the Midwest, a lot of that moisture is not there anymore.  -   Rick Smith     Quotes
As the storm systems move across the Rocky Mountains, they kind of get wrung out like a sponge, and as they get into the Plain states and the Midwest, a lot of that moisture is not there anymore. Rick Smith
 Mountains