Warm air moves over cold air and replaces it.
A front forms. The type of front depends on which air mass is advancing. If the cool air mass advances, it is a cold front. If a warm air mass advances, it is a warm front. If neither advances, it is a stationary front.
a warm front
a warm front
A warm front forms.
The front that forms when a warm air mass is trapped between cold air masses and is forced to rise is called a occluded front. This occurs in the process of cyclone development, where a cold front catches up to a warm front, lifting the warm air off the ground. As the warm air rises, it can lead to cloud formation and precipitation.
A warm front forms.
It forms a warm front. Along with this nimbostratus, altostratus, cirrostratus and cirrus clouds are formed.
A front forms. The type of front depends on which air mass is advancing. If the cool air mass advances, it is a cold front. If a warm air mass advances, it is a warm front. If neither advances, it is a stationary front.
A warm front.
a warm front
a warm front
A warm front forms.
A warm front forms.
A warm front forms.
It is a warm front.
A warm front forms.
A warm front forms.