what is a barrier jet

A barrier jet is a narrow jet stream that forms along the boundary between a cold air mass and a warmer one. It acts as a barrier, preventing the cold air from advancing further into the warmer air. Barrier jets can have significant impacts on local weather patterns, including wind speed and direction, precipitation patterns, and temperature. They are often associated with strong storms and can contribute to the formation of severe weather events, such as thunderstorms and tornadoes.