Why is it so windy?

So why is it so windy? Unlike the Derecho that caused havoc across the area last summer the winds we are experiencing are much more commonplace.The earth is designed to constantly keep an equalized pressure. When this gets disrupted we experience wind.
But, what makes such a strong or severe wind with gusts of nearly 60 mph?
Think of a pop or soda can, you know when it gets shaken up we can see a burst of sticky soda erupting out of the can. The higher the pressure inside the can the more it exp