Weather Fronts

Weather Fronts

· boundaries where two air masses meet that have different temperature and moisture

· three types of fronts are cold, warm, and stationary

Cold Fronts

· form when a mass of cold air moves under a mass of warm air

· warm air is rapidly forced upwards creating giant cumulonimbus clouds, low barometer readings, and violent storms

· hail and sleet can accompany these fronts

· after the storm, the weather is usually cool and fair

Warm Fronts

· form when a mass of warm air moves over a mass of cold air

· produce a slow, gentle rain where the barometer falls and nimbostratus clouds form

· after these storms the weather is usually hot and humid

Stationary Fronts

· a stationary front forms when a mass of warm air and a mass of cold air meet but no movement occurs

· slow rain may fall for many days during this condition

Questions

1. What is a front?

2. What are the three types of fronts?

3. What weather is with a cold front?

4. What causes a cold front?

5. What weather is with a warm front?

6. What causes a warm front?

7. What weather is with a stationary front?

8. What causes a stationary front?

9. How is a front measured and shown on a map?

Weather Fronts