The area in the United States where cool, dry air from the West meets warm, moist air from the Gulf of Mexico and results in an unstable atmosphere?

The region in the United States where this occurs is commonly known as "Tornado Alley." This area primarily encompasses parts of central United States, including states such as Texas, Oklahoma, Kansas, and Nebraska. It is known for its frequent tornado activity due to the clash of air masses with different temperature and moisture levels.