Here's what happens:
* Two air masses with different properties meet. These properties can include temperature, humidity, and density.
* The air masses exert equal pressure on each other. Neither air mass has enough force to push the other aside.
* The boundary between the air masses remains in place. This creates a relatively stable situation.
Weather associated with stationary fronts:
* Generally prolonged precipitation: As the air masses meet, the warm air rises, cools, and condenses, leading to cloud formation and rainfall.
* Variable winds: The wind direction can shift depending on the position of the front.
* Fog and low clouds: The warm, moist air can mix with the cooler air, leading to fog formation.
Example: A stationary front could be responsible for several days of persistent rain in a particular region.
