welcome to class if minnesota is experiencing cold, wet weather, what kind of air mass might be...
Post on 02-Jan-2016
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Welcome To Class
If Minnesota is experiencing cold, wet weather, what kind of air mass might be
affecting us?
Agenda
• Fronts
• Weather Map Practice
Air Masses• Large body of air with uniform characteristics
• Continental – form over land, dry
• Maritime – form over oceans, moist
• Tropical – warm
• Polar – cold
Cold FrontBefore Front During Front After Front
Temperature Warm Suddenly Cooler Steadily Cooler
Pressure Low Low, then increase
Increasing Steadily
Precipitation Mild Severe Mild
•Usually bad weather
•Colder after they pass through
•Low pressure before High pressure after
Warm FrontBefore Front During Front After Front
Temperature Cool Warming suddenly Warmer, then leveling off
Pressure DecreasingSuddenly
Leveling off Slight rise followed by decrease
Precipitation Showers, snow, sleet, or drizzle
Light Drizzle Usually none, otherwise mild
•Mild Weather
•High Pressure before Low pressure after
•Warmer temperatures (often humid)
Question
After a major thunderstorm in the summer, what kind of front do you believe would be present? What would the pressure feel like?
Measuring WeatherFind out what instruments we use to measure the
following:
• Air Temperature
• Air Pressure
• Wind Speed
• Wind Direction
• Humidity
Page 611-612
Weather Map
Cold Front Warm Front Stationary Front Occluded Front
Weather Map Reading
• You and your partner will work together to answer the questions on the worksheet about weather maps– Turn in 1 worksheet
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