1. A boundary between two air masses of different density, moisture, or temperature is called a FRONT. Cloudiness , precipitation , and storms sometimes occur at frontal boundaries. Four types of fronts include cold, warm, occluded, and stationary.
2. This is a Occluded Front
3. Occluded Fronts <ul><li>A occluded Fronts involves 3 air masses of different temperature cold air , cool air, and warm air. A Occluded fronts may form when a cold air mass moves toward cool air with warm air between the two. A cold front can even take over a warm fronts </li></ul>
4. This is a Stationary Fronts
5. Stationary Fronts <ul><li>Stationary fronts occur when neither warm nor cold air advances. The two air masses reach a stalemate. That is what stationary means - that neither front is moving. These type of conditions can last for days, producing nothing but Altocumulus clouds. Temperatures remain stagnant and winds are gentle to nil. </li></ul>