Friday 3/10/17 No Notebook Entry Today! Please get your Chromebook from the cart. Have your textbook and Front chart at your seat as well.

Go to Mrs. Burke’s Webpage Click on Unit 6 Weather and Climate Find today’s date and click on the link title “Front Animations”

Analysis of Fronts View and analyze with your partner each animation. Use the animation to check and finalize your notes.

Warm Front During Front: Cloudy with precipitation likely Stays for several days as it is slow to push out cold air After the Front: Warmer temps More Humidity in the Air A moving warm air mass collides with a slowly moving cold air mass. The warm air moves over the cold air. If the warm air is humid showers and light rain might fall where the warm and cold air meet. If the warm air is dry scattered clouds may form. After a warm front passes through an area the weather is likely to be warm and humid. Winter warm fronts bring snow. http://www.physicalgeography.net/fundamentals/7r.html

Cold Front During Front: Quick change in the weather Strong winds and severe storms Amount of water vapor in the warm air determines how much precip will fall. After Front: Colder, drier air with clear skies Moving cold air mass runs into a slowly moving warm air mass, the denser cold air slides under the warmer air and pushes it upwards. If there is a lot of water vapor in the warm air heavy rain or snow may fall. Cold fronts move quickly so they can cause weather changes. After a cold front passes, cool, dry air moves in. http://www.physicalgeography.net/fundamentals/7r.html

Occluded Front During the Front: Cooler temperatures Clouds and precipitation based on amount of water in warm air After the Front: Cooler temps No Precipitation A warm air mass caught between two cooler air masses. The denser cool air mass moves underneath the less dense warm air mass and pushes it upward. The warm air mass is cut off (or occluded) from the ground. As warm air cools and its water vapor condenses, the weather may turn cloudy, rainy, or snowy.

Stationary Front During the Front: Constant clouds & precipitation for MANY days After the Front: Depends on which air mass wins May be cooler or warmer

Lets go back… What type of front is headed towards Montana? What type of weather could we expect?