Each part of the atmosphere does not get heated up equivalently at the same time. This in-equivalence makes the huge masses of air to move about as an automated reply of the atmosphere to balance itself. The sundry sorts of weather are a direct result of this mass movement of air. The present air mass in an area gets encountered that is already there when another air mass moves in. Front is the boundary that is made between these 2 air masses. Cold front is when the cold air replaces the warm air and when cold front gets replaced, it is perceived as a warm front. A cold air mass when encounters a warm front, the chillier air get pushed below the warm front. Condensed water vapor changes into clouds when the warm front rises and cools down. Appearance of mid-level clouds follows high cirrus clouds. Mid-level cloud is followed by Thick stratus clouds. Rainfall and wind come next. Often cold fronts produce weathers that are far more volatile by nature. The warm air mass moves upward sharply when it comes in contact with a cold front. Convection and instability results due to this sharp upward movement.

Along the front trigger tempests and formation of enormous cumulus clouds. An area of powerful winds and low-pressure area gets made because of the fast rise in air. The front is accompanied by powerful winds and torrential rain. After frontal passage come the continuing showers.