FRONTWhere air masses meet
and do not mix.
4 Types of weather fronts:
Cold Front
Occluded Front
Stationary Front
Warm Front
Cold FrontWhen a fast moving cold air mass runs into a
slow moving warm air mass and the thicker cold air slides under the lighter warmer air.
Cold Front
Thunderstorms often form as warm air is suddenly lifted up over the cold air.
A cold front symbol—The direction that the teeth point
indicate the direction the front is moving.
Warm FrontWhen a moving warm air mass collides with a slowly moving cold air mass and the warm air
moves over the cold air.
Warm Front
This can lead to hours, if not days, of wet weather.
Warm Front symbol—The directions that the bumps face is the direction the front is moving.
Stationary FrontWhen a cold air mass and warm air mass meet,
but neither air mass has enough force to move the other air mass.
Stationary FrontRemain in the same place for several days, producing light wind and precipitation.
Stationary Front Symbol
Occluded FrontWhen a warm air mass is caught between two
cooler air masses and the thicker cold air masses move underneath the thinner warm air mass and
push it upward.
Occluded Front
Occlusion means closure
Cooler weather
Occluded front symbol – The directions that the bumps face is the direction the front is moving.
Which types of fronts can you find on this map?
1.
2.
3. 4.