The boundary between two air masses is called a front. Fronts can be stationary, warm, occluded or cold and often affect the weather on Earth.Continue Reading
Cold fronts cause warmer air to be pushed up, over the top of the colder air. The cold air remains close to the ground and eventually, the warmer air cools. Warm fronts also rise above cooler air. Because of the instability of the two air masses colliding, warm fronts often bring with them rain and thunderstorms.
Stationary fronts occur when a cold air mass and warm air mass meet, but both of them are too weak to overtake the other. Because two air masses of different temperatures meeting often cause rain and storms, a stationary front can cause heavy rain and flooding until one front gathers enough power to push the other out of the way.
An occluded front is more complicated than the others, because three air masses are involved. An occluded front happens when a warm front is caught between two cold fronts. The cooler fronts, because of their weight and density, move under the warm front and push it higher up.
Any of these fronts have the capability to cause dramatic weather changes such as temperature swings, high winds, rain, hail and severe weather.Learn more about Weather Forecasts
The first signs of an approaching warm front include a general movement of air from southwest to northeast, a drop in air pressure, and warmer air found behind the movement of the front. Warm fronts tend to signal a general change in weather.Full Answer >
Frontal thunderstorm are storms that develop at the boundary or front of two different masses of air. This means frontal thunderstorms depend less on the season of the year compared to the thermal thunderstorms.Full Answer >
Only two official weather-related terms begin with the letter Q: quasi-stationary front and quantitative precipitation forecast. Some less technical words beginning with Q can apply to weather as well; for example, a storm can move quickly, and scientists can measure quantities of rain or snow.Full Answer >
Isotherm lines that are placed close together on a weather map represent a weather front. A weather front is a boundary between different densities of air in a given region.Full Answer >