Stormy weather, such as what you might experience during a storm over the Houston area, is typically associated with low-pressure systems. Low-pressure systems are characterized by rising air, which can lead to the formation of clouds and precipitation. As air rises, it cools, and when it cools enough, moisture condenses to form clouds and precipitation, often resulting in rain, thunderstorms, or severe weather.
In the context of Houston, storms can also be influenced by warm, moist air coming in from the Gulf of Mexico, which often exacerbates the conditions for storm formation. Additionally, other factors like surface fronts (cold fronts colliding with warm air) can also enhance storm activity.
In summary, low-pressure systems and the presence of warm, moist air are key factors that contribute to stormy weather in the Houston area.