Friday, February 5, 2010

Fronts


What is a Front? Boundaries between contrasting air masses.

Low pressure system involved.

3 Types of Front:

- Cold Front: cold air replaces warm air, temperature goes down, air pressure drops, cumulonimbus clouds are created by warm air rising and there is heavy rain for a relatively short period of time - tornadoes can form in extreme conditions.

- Warm Front: warm air replaces cold air, temperature rises and may be some light rain for a relatively long period of time which will clear up into really nice weather.

- Occluded Front: cold front catches up with a warm front and usually some precipitation.

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