Definition!

• Fronts are boundaries between air masses of different temperatures. Fronts are actually zones of transition, but sometimes the transition zone, called a frontal zone, can be quite sharp.
• The type of front depends on both the direction in which the air mass is moving and the characteristics of the air mass. There are four types of fronts: cold front, warm front, stationary front, and occluded front.

(Stationary)

(Warm &Cold)

(Occluded)
• To locate a front on a surface map, look for the following:
  • sharp temperature changes over relatively short distances,
  • changes in the moisture content of the air (dew point),
  • shifts in wind direction,
  • low pressure troughs and pressure changes, and
  • clouds and precipitation patterns.
  (Not all of these patterns may be obvious or even occur, but these are some signs.)

Types of Weather fronts!

• Cold weather fronts!

How are cold weather fronts formed?
Forms when a cold air mass pushes under a warm air mass, forcing the warm air to rise.
What weather a cold front will bring?
Thunderheads can form as the moisture in the warm air mass rises, cools, and condenses. As the front moves through, cool, fair weather is likely to follow.

• Warm Weather Front!

How are warm weather fronts formed?
Forms when a moist, warm air mass slides up and over a cold air mass.
What weater will a warm front bring?
As the warm air mass rises, it condenses into a broad area of clouds. A warm front brings gentle rain or light snow, followed by warmer, milder weather.

• Stationary Weather Front!

How are stationary weather fronts formed?
Forms when warm and cold air meet and neither air mass has the force to move the other. They remain stationary, or “standing still.”
What weather will a stationary front bring?
Where the warm and cold air meet, clouds and fog form, and it may rain or snow. Can bring many days of clouds and precipitation.

• Occluded Weather Front!

How are Occluded fronts formed?
Forms when a warm air mass gets caught between two cold air masses. The warm air mass rises as the cool air masses push and meet in the middle.
What weather will a occluded front bring?
The temperature drops as the warm air mass is occluded, or “cut off,” from the ground and pushed upward. Can bring strong winds and heavy precipitation.

Warm &Cold weather fronts!

Cold Weather Fronts

• What are cold weather fronts?

Well, a cold weather front is decribed as the changeover in  an area. Where the cold air is replaced with the warm air.

• Why does the cold air replace the warm air?

Because, the cold air pushes the warm air upward.

• What direction do cold fronts travel?

Cold weather fronts move Northwest to Southeast.

• What is it like after a cold front?

The air that comes after cold front is cooler than the air before the frony. The cold front can make the temperature drop 15 degrees in an hour. Also the cold fronts move faster than warm fronts.

Weather Fronts!