Known as the colorful lines that move across weather maps, weather fronts are boundaries that separate air masses of different air temperatures and moisture content (humidity). A front takes its name from two places. It is the literal front, or leading edge, of air that’s moving into a region.
What does front mean in weather?
A weather front is a transition zone between two different air masses at the Earth’s surface. Each air mass has unique temperature and humidity characteristics. Often there is turbulence at a front, which is the borderline where two different air masses come together. The turbulence can cause clouds and storms.
What is a front and how does it appear on a weather map?
Fronts are the edges of moving air masses. They are shown on maps by heavy lines with additional symbols to show the direction of movement. A line showing a cold front has triangles pointing in the direction the air mass is moving, while warm fronts have half-circles on the side toward which the air is moving.
What is a front symbol?
Symbols are used on surface weather maps to indicate the characteristics or type of front. A stationary front line is indicated by blue triangles on one side of the line alternating with red semi-circles on the opposite side of the line.
What is a front in geography?
A front is a weather system that is the boundary separating two different types of air. One type of air is usually denser than the other, with different temperatures and different levels of humidity. This clashing of air types causes weather: rain, snow, cold days, hot days, and windy days.
Why is a weather front called a front?
Front, in meteorology, interface or transition zone between two air masses of different density and temperature; the sporadic flareups of weather along this zone, with occasional thunderstorms and electrical activity, was, to the Norwegian meteorologists who gave it its name during World War I, analogous to the …
What does a warm front look like?
Symbolically, a warm front is represented by a solid line with semicircles pointing towards the colder air and in the direction of movement. On colored weather maps, a warm front is drawn with a solid red line. There is typically a noticeable temperature change from one side of the warm front to the other.
What weather do cold fronts bring?
Cold fronts can produce dramatic changes in the weather. … Commonly, when the cold front is passing, winds become gusty; there is a sudden drop in temperature, and heavy rain, sometimes with hail, thunder, and lightning. Lifted warm air ahead of the front produces cumulus or cumulonimbus clouds and thunderstorms.
Is a cold front or warm front shown in map A?
Cold fronts are always shown as a blue line with arrow points on it. If neither air mass is moving very much, it is called a stationary front , shown as an alternating red and blue line. Usually, a cold front will be associated with a warm front, with a low pressure center, connecting them (see above).
What is the symbol for a occluded front?
The symbol for an occluded front is a purple line with alternating triangles and semi-circles (also purple) pointing in the direction the front is moving. Sometimes a cold front will “catch up” to a warm front and overtake both it and the cooler air out ahead of it.
How do you read fronts?
Cold fronts are depicted by blue line with triangles pointing in the direction of motion. Cold fronts demarcate the leading edge of a cold air mass displacing a warmer air mass. Phrases like “ahead of the front” and “behind of the front” refer to its motion.
How are cold fronts named?
Cold fronts are the leading edge of cooler air masses, hence the name “cold front“. They have stronger temperature changes during the fall (autumn) and spring and during the middle of winter.
What is front and its type?
Fronts are boundaries between air masses of different temperatures. … The type of front depends on both the direction in which the air mass is moving and the characteristics of the air mass. There are four types of fronts that will be described below: cold front, warm front, stationary front, and occluded front.
How do fronts work?
Weather fronts mark the boundary between two different air masses, which often have contrasting properties. For example, one air mass may be cold and dry and the other air mass may be relatively warm and moist. These differences produce a reaction (often a band of rain) in a zone known as a front.
What does front mean?
verb. to pretend to be someone else. Man, quit fronting! Don’t front with me. See more words with the same meaning: to pretend, feign, pose.