When two weather systems collide, the zone of collision is called a front. This collision is what mostly causes severe storms. It's not the only cause. Tropical revolving storms - Cyclones,Hurricanes and Typhoons- are not caused by or associated with fronts. Additionally, very hot weather can cause severe thunderstorms, which again are not necessarily associated with a front.
A weather front is, in general, a boundry between air masses of different temperatures and, therefore, different densities. These air masses will typically be carrying different amounts of moisture, too. Hot air meeting cold or cold air pushing into hot air generates instability in the movement of the involved air masses. This instability has the ability to generate wind and different forms of precipitation. Just to cite one example, if a mass of warm, moist air is overrun by a mass of cold, dry air, the cold air will take energy from that warm wet air and the resulting cooling may cause rain, thunderstorms, snow, or other types of atmospheric (meteorological) phenomenon.
There are many reasons why storms occur along fronts. There is energy that is trapped between fronts that can cause a storm for example.
They form along cold fronts
Clouds gather just ahead of fronts
because you suck
A Snowstorm!ANS2:A squall line sets up along the advancing edge of a cold front.
It is a line of thunderstorms that can form along or ahead of a cold front.
Squall Lines
Tornadoes are more likely to form along a cold front, but they can occasionally form along a warm front. Many tornadoes form in an area called Larko's triangle, between a warm front and cold front. Some tornadoes form along a dry line, and in fact a try line can be more proficient at producing tornadoes than a cold front. Still other tornadoes form from tropical systems, which do not involve any sort of front.
the front that creates a squall line is a cold front
because you suck
Tornadoes can occur along a warm front, but you are more likely to find them along a cold front or dry line. Tornadoes can also occur in the absence of any sort of front. Warm fronts often produce precipitation but don't usually result in severe weather.
A Snowstorm!ANS2:A squall line sets up along the advancing edge of a cold front.
front
It is a line of thunderstorms that can form along or ahead of a cold front.
It is a line of thunderstorms that can form along or ahead of a cold front.
A line along which the cost of something -- usually a combination of two factors of production -- is constant. Since these are usually drawn for given prices, which are therefore constant along the line, an isocost line is usually a straight line, with slope equal to the ratio of the (factor) prices.
Squall Lines
thunderstorm
Usually known as queue jumping.
a front causes rain or a storm along the line where 2 masses meet they push against each other
Tornadoes are more likely to form along a cold front, but they can occasionally form along a warm front. Many tornadoes form in an area called Larko's triangle, between a warm front and cold front. Some tornadoes form along a dry line, and in fact a try line can be more proficient at producing tornadoes than a cold front. Still other tornadoes form from tropical systems, which do not involve any sort of front.