Colliding air masses within tornado alley make for exceptional conditions that allow for vigorously rising air, which is essential for thunderstorms. Storms in the Great Plains regularly reach 10 miles (16 kilometers) into the sky because of these conditions: 1  Winds pushing disparate air masses converge in tornado alley. 2  Colliding air, known as fronts, have nowhere to go, therefore they rise.
Apple's fiscal 2011 10-K report showed that the average size of an Apple Store has creeped up to 8,400 square feet per store, but Needham & Company analyst Charlie Wolf says that the retail stores are bulging at the seams and just aren't big enough.
In the not too distant past, every convenience store looked about the same -- 2,400 square feet of packaged consumer items. Today, companies in the industry are approaching markets with different types of stores and different product offerings.yper Convenience Store. These very large stores (4,000 to 5,000 square feet) usually offer an array of products and services arranged in departments. For example, such stores may offer variations such as a bakery, a sit-down restaurant area, or a pharmacy. Many of these locations do sell gasoline.