How does a weather front create sudden changes in temperature?
Quick Answer
A front marks the boundary between two air masses, so when it passes, the temperature, wind and humidity can change quickly.
The Full Story
A weather front is the dividing line between air masses with different temperatures and moisture levels. When a cold front moves through, colder dense air pushes under warmer air and can trigger clouds, showers and a sharp temperature drop. Warm fronts usually slide over cooler air more gradually, often bringing widespread clouds and longer periods of light rain. Fronts are a major part of mid-latitude weather systems and help explain why weather can change so quickly in a single day.
Key Facts
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