An occluded front is the most complex of the various fronts. When a fast-moving cold air mass causes a slowly moving warm air mass, it can sometimes wedge completely beneath the mass of warm and begin to mix with the cool air on the other side. When this happens, the mass of the heat is cut off from the Earth, or clogged, and is is lifted further into the atmosphere. Weak lifting can cause widespread clouds, as well as rain or snow and occasional storms.
When cold and warm air masses meet, nor does it have enough power to move the other, a stationary front is formed. Along the front the suspension is very weak and storms are rare as a result. Because stationary fronts moves very little, they can cause constant rain or snow over the same general area for many days. Many flooding and heavy snow events are caused by stationary fronts, sometimes referred to as the “stand” over an area.
A warm front occurs when a warm air mass moved into an existing mass of cool air. Because the warm air is already in progress and the cold air is stationary, force warm air lifts over the cold air with much less. This leads to a lot less energy for storm development and often causes steady, prolonged rain and occasional weak storms instead. Because warm fronts move more slowly than cold fronts, item rain generally a longer period of time.
Cold fronts occur when a mass of cold air moves in and collides with an existing mass of hot air. Because cold air is heavier than warm air, drive cold air mass underneath the mass of warm as a wedge, lifting it higher in the atmosphere. The mass of heat rising in the end high enough to begin condensing, forming clouds and rain. The cold air is forcing the warm air to lift upwards, often leads to the development of thunderstorms or heavy snow in winter. For this reason, the majority of severe weather occurs near cold fronts.