All you need to know about fronts
A cold front is formed by a cold air mass pushing the warm air mass above it. A cold front will bring very strong and heavy rain also cold temperatures after the front passes by. This front will form a cumulonimbus cloud on the border of the front. A cold front is very dense because the temperature in the air mass is cold and causes the particles to form closer together
A warm front is formed by a warm air mass pushing on a cold air mass and slightly rising above the cold air mass. A warm front will bring soft and light rain like a drizzle also warm temperatures after the front passes by. This front will form cirrus clouds on the border of the front. A warm front is less dense than a cold front because it is warm in the air mass and causes the particles to speed up and have more space.
A stationary front is formed by a warm and cold air mass pushing on each other but don't have enough force to move each other. A stationary front will bring light rain for about a week for one place also this front will cause mild temperatures. This front will form a big cumulonimbus cloud in between the two fronts pushing on each other. A stationary front has medium density because the the temperatures are mild and keep the particles moving faster than a cold front and slower than a warm front.
A occluded front is formed by two cold air masses coming together and pushing the warm air in between up above both of the cold fronts. A occluded front will bring strong rain also this front will cause cold temperatures. This front will form a very large cumulonimbus cloud in between the two cold fronts. There is going to be very dense air because the cold temperature is going to cause the particles to slow down and come closer together
AIR MASSES AND FRONTS