Fronts
What causes a stationary front?
When a warm air mass meets a cold air mass, but neither one has enough strength to overtake the other.
What does the following symbol represent on a weather map?
Red circles
Warm Front
What does a red H stand for on a weather map?
High Pressure
What front is currently heading toward Utah?
Warm Front
What causes an Occluded Front?
When a cold air mass meets another cold air mass, trapping warm air in the middle.
What does the following symbol represent on a weather map?
Line with alternating triangles and circles on one side of a line; Purple
Occluded Front
What does a blue L stand for on a weather map?
Low pressure
What front is up by Quebec?
Stationary Front
What causes a Cold Front?
When a warm air mass meets a cold air mass and the cold air pushes the warm air up and out of the way.
What does the following symbol represent on a weather map?
Blue triangles
Cold Front
What weather does a high-pressure area bring?
happy, good weather
What weather should Washington State expect to see in the next little bit?
Warm Front - mild precipitation
What causes a Warm Front?
When a warm air mass meets a cold air mass and the warm air pushed the cold air down towards the ground.
What does the following symbol represent on a weather map?
Alternating triangles and circles on both sides of a line, red circles, blue triangles.
Stationary Front
What weather does a low-pressure area bring?
lousy weather
Nebraska is currently in a high-pressure area, meaning they are experiencing happy, calm weather. Why?
Warm air is on its way down as air molecules - no precipitation can occur.
What type of weather is caused by each type of front:
Warm, Cold, Occluded, Stationary
Warm = Mild precipitation
Cold = Precipitation and Thunderstorms
Stationary = Precipitation
Occluded = Severe precipitation and weather
How do you know what direction a front is moving?
You look at what direction the symbol shapes are facing.
Draw two pictures - one showing what happens in a high-pressure area and one showing what happens in a low-pressure area.
Picture on TV
What weather is headed toward Saskatoon, Canada?
Occluded front: severe weather