This week marks Severe Weather Awareness Week, and as we get closer Spring, with the weather getting warmer and more humid, thunderstorms become more and more likely each month. At any given moment, there are nearly 2000 thunderstorms occurring on Earth, primarily in the Tropical Regions. These storms rely on 3 main ingredients to form: Warm/Hot surface air, abundant moisture, and colder/cooler air aloft. These are necessary to get what is called convection, or vertical motion of air.