What cloud formations are associated with fronts?

Cloud Formation Due to Weather Fronts ... Warm fronts produce clouds when warm air replaces cold air by sliding above it. read more

As the trailing cold front advances, you can expect the air to be much more unstable. The wind will become gusty, clouds will develop as cumulonimbus, sometimes with thunderstorm. Rain will become intermittent showers and the visibility will increase as we move now in polar air. read more

Warm fronts produce clouds when warm air replaces cold air by sliding above it. Many different cloud types can be created in this way: altocumulus, altostratus, cirrocumulus, cirrostratus, cirrus, cumulonimbus (and associated mammatus clouds), nimbostratus, stratus, and stratocumulus. Cold fronts occur when heavy cold air displaces lighter warm air, pushing it upward. read more

Cumulonimbus clouds are common in cold fronts because of the strong updrafts formed when the cold front displaces the warmer air. An advancing cold front can turn fair weather cumulus clouds into large cumulonimbus formations known as supercells. read more