Why Is Sequim So Dry?

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By By Steve Pool

SEATTLE - Sequim is the driest spot in western Washington, getting just 18" of rain a year. And they can thank their proximity to the Olympic Mountains.

Most of our rainy weather around here comes from the southwest. The moist air will rise up the southwest side of the Olympics, then condense and squeeze out its moisture. (Think of the Olympics as a big sponge in this case.) That's why the Olympic rain forests get over 200" of rain a year.

On the flip side, once the air reaches the summit, all its moisture is gone. Plus, as it then goes down the northeast side of the Olympics, it sinks and dries out -- right over Sequim. That's known as the Olympic Rain Shadow.

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Your Photos

YouNews Spider web water catcher (New) Spider web water catcher
If we could catch water this efficiently our water woes would cease to exist.Taken at the Railroad bridge park in Sequim, WA.
YouNews Horse Show in Heritage Park Horse Show in Heritage Park
Photographed at the Andalusian/Lusitano Horse Show in Chilliwack, BC. Also being shown were some Friesian Horses.