weather fronts are The point where two air masses meet. there are four types of fronts: warm, cold, stationary and occluded.
cold fronts: Cold fronts form when dense masses of cold air advance into a mass of warm air and push the lighter warm air up out of its way. As the warm air rises, it often forms cumuli or cumulonimbi clouds. These clouds are responsible for thunderstorms, which is why thunderstorms are often seen along the leading edge of a cold front. rain, snow and cold weather are typically associated with cold fronts.
warm fronts: warm fronts form When a warm air mass runs into a cold air mass, the warm air is forced to rise above the cold air. The transition zone where a warm air mass collides with and is replacing a dense cold air mass is called a warm front. This collision causes slowly rising clouds. Generally, along the trailing edge of the warm front, nimbostrati clouds are formed, which bring a drizzle or slow, steady rain to the area. sunny, warm weather is associated with warm fronts.
stationary fronts: A stationary front forms when a cold or warm front stops moving, which happens when two masses of air are pushing against each other but neither is powerful enough to move the other and Winds blowing parallel to the front. A stationary front can last for days. If the wind direction changes the front will start moving again, becoming either a cold or warm front, Or the front may break apart. Because a stationary front marks the differences between two air masses, there are often changes in air temperature and wind on opposite sides of it. cloudy weather and rain or snow are often associated with this type of front.
occluded fronts: a occluded front forms when a cold front overtakes a warm front. A wide variety of weather can be found along an occluded front, with thunderstorms possible, but usually their passage is associated with a drying of the air mass. Precipitations and clouds are associated with this front .