Types of Air Masses based on Region

A great video to remind you about types of air masses...

Watch This!!  http://video.about.com/weather/Types-of-Air-Masses.htm

Weather Phenomenon	Prior to the Passing of the Front	Contact with the Front	After the Passing of the Front
Temperature	Warm	Cooling suddenly	Cold and getting colder
Atmospheric Pressure	Decreasing steadily	Leveling off then increasing	Increasing steadily
Winds	South to southeast	Variable and gusty	West to northwest
Precipitation	Showers	Heavy rain or snow, hail sometimes	Showers then clearing

Weather Phenomenon	Prior to the Passing of the Front	Contact with the Front	After the Passing of the Front
Temperature	Cool	Warming suddenly	Warmer then leveling off
Atmospheric Pressure	Decreasing steadily	Leveling off	Slight rise followed by a decrease
Winds	South to southeast	Variable	South to southwest
Precipitation	Showers, snow, sleet or drizzle	Light drizzle	None

http://www.physicalgeography.net/fundamentals/images/warmfront.GIF

Figure 7r-3: Atmospheric cross-section of a warm front

Figure 7r-4: Atmospheric cross-section of a occluded front.

Air Mass Source Regions

                       



                          

Below is a link that will take you to the website where these diagrams came from. You will find more detailed information on the fronts and further down the page new topics (you haven't done in science class) are presented.

http://theweatherwiz.com/school/chpt5a.htm