Decreasing pressure
Warm, humid
Continental polar masses are cold and dry air masses because the cold air cannot hold much moisture. As they move into warmer air, they can trigger precipitation.
Decreasing Air Presser
Wind shear can result in the formation of a tornado.
What does this symbol indicate on a weather map?
low pressure
When a cold FRONT catches up to a warm FRONT it is called an occluded front.
When a cold AIR MASS displaces a warmer AIR MASS it is a cold front.
Occluded front
How does a region has a low pressure and a high pressure system moves in. What is the best prediction about the weather from this information?
The polar jet stream lies between the polar easterlies and trade winds