Tornado alley. Click on the image to view the large version. The middle part of the United States is an area that has many tornadoes, particularly in the spring. This area is known as tornado alley. The reason is because it is an area where large cold air masses and large warm air masses collide. When these air masses crash into each other, it can cause thunderstorms and they can create tornadoes.
Strip malls are usually comprised of a series of retail stores whose average size approximates about 1,000 square feet each. As such, most strip malls total less than 20,000 square feet in size. They typically have good visibility due to being generally located on the perimeters of densely populated neighborhoods, heavily trafficked commercial streets that have easy access, or on or near corners.
Walmart opened Supermercado de Walmart locations to appeal to Hispanic communities in the United States. The first one, a 39,000 square feet (3,600 m 2) store in the Spring Branch area of Houston, opened on April 29, 2009. The store was a conversion of an existing Walmart Neighborhood Market.almart Discount Stores are discount department stores with sizes varying from 51,000 to 224,000 square feet (4,738.1 to 20,810.3 m 2), with the average store covering about 102,000 square feet (9,476.1 m 2).