Fronts



Cold Fronts Occur when a cooler air mass replaces a warm air mass at the surface.

Warm Fronts Occur often when a warmer air mass replaces a warmer air mass at the surface.

Stationary Fronts Occur when a warm and cool air mass run into each other but niether moves the other.

Occluded Fronts Occur when a Cold Front overtakes a Warm Front and the warm air is completely removed from the surface.