The appearance of cirrus clouds is an early sign of an approaching warm front.
cirrus clouds
Cirrus clouds
A warm front brings rain and fog
its is misty and cold on A COLD FRONT AND MUGGY AND WARM ON A WARM FRONT
An occluded front is a cold front that is moving faster than a warm front. The cold front soon "catches up" to the warm warm and they merge together.
cirrus clouds
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Warm, moist air mass is approaching as a warm front
Cirrus clouds
Cirrus clouds are followed by an approaching warm front.
As warm air rises, it expands and cools. The rising air soon reaches the dew point, the temperature at which the water vapor in the air condenses into droplets of water or form tiny ice crystals. Clouds form. If there is a lot of water vapor in the warm air, heavy rain or snow may fall.
If you know that a warm front is approaching, you can forecast when it will rain, and can cancel a barbecue. The warm front may have collected a lot of moisture as it passed over the ocean. Then, if it meets a cold front, rain will fall, or snow if in winter.
As warm air rises, it expands and cools. The rising air soon reaches the dew point, the temperature at which the water vapor in the air condenses into droplets of water or form tiny ice crystals. Clouds form. If there is a lot of water vapor in the warm air, heavy rain or snow may fall.
It arrives in front of the warm front
warm front rises on top of the cold front.
A warm front brings rain and fog
its is misty and cold on A COLD FRONT AND MUGGY AND WARM ON A WARM FRONT