1. Rapid movement Gradual movement
Types of Air Masses
Rapid movement
Gradual movement

2. Gradual Movement
Air mass- a huge section of the lower troposphere that has the same kind of weather throughout

5. Air Masses
Maritime tropical (mT) from the tropical seas, warm and humid

6. Air Masses
Continental tropical (cT) from the tropical land masses, hot and dry

7. Air Masses
Maritime polar (mP) from the cold ocean water, cold and humid

8. Air Masses
Continental polar (cP) from land in high latitudes, cold and dry

9. Air Masses
Continental Arctic (cA) from ice covered Arctic regions, very cold and dry

10. Fronts Gradual movement Where one air mass is displacing another
The boundary between two air masses, most precipitation comes with fronts
Warm
Cold
Stationary

11. Warm Fronts Warm air pushing ahead and displacing cold air
Weather- slow moving, steady rain or snow
                                                                                  

12. Cold Front Cold air is advancing and taking over warm air
Weather- quick showers and thunderstorms, temperatures fall fast
                                                                                   
                       

13. Stationary Front Neither front is being displaced, no movement
Weather- much like a warm front