What is the weather symbol for cold?
Cold Front Symbol The weather map symbol for a cold front is a blue curved line with blue triangles.
What are the symbols for weather fronts?
The front marks the leading edge of the cold air. The blue triangles always point in the direction that the front (and the cold air) is going. A red line with half-circles on one side signifies a warm front. A warm front shows the leading edge of warmer air trying to replace a colder air mass.
What signifies a cold front?
A cold front is blue on a surface map with triangles indicating the direction in which the front is moving. Most of the time it is moving generally west to east or north to south. WARM FRONT: Warm fronts can be much more broad and will often extend eastward from low pressure.
How do you identify a cold front?
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.
Which best describes a cold front?
A cold weather front is defined as the changeover region where a cold air mass is replacing a warmer air mass. Cold weather fronts usually move from northwest to southeast. The air behind a cold front is colder and drier than the air in front.
What is an example of a cold front?
A cold front is defined as the transition zone where a cold air mass is replacing a warmer air mass. In the example below, temperatures ahead of the cold front are 55 and 62 degrees while behind the front, the temperatures are lower, 31 and 28.
What is another name for cold front?
In this page you can discover 9 synonyms, antonyms, idiomatic expressions, and related words for cold-front, like: cold sector, cold-snap, cold spell, cold-wave, polar front, snap, front, occluded-front and warm-front.
How do you identify fronts?
To locate a front on a surface map, look for the following:sharp temperature changes over relatively short distances,changes in the moisture content of the air (dew point),shifts in wind direction,low pressure troughs and pressure changes, and.clouds and precipitation patterns.
What is L and H in weather?
High and low pressure systems. The number shown on high and low pressure systems indicate the central mean sea level pressure.
What is the symbol for 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. If this happens, an occluded front is born.
How do you read weather map symbols?
0:161:55How to Read a Weather Map - YouTubeYouTubeStart of suggested clipEnd of suggested clipAir is moving in a counterclockwise fashion. Towards the low pressure. The blue lines with theMoreAir is moving in a counterclockwise fashion. Towards the low pressure. The blue lines with the points show the leading edge of colder air.
Where do cold fronts go?
Cold fronts nearly always extend anywhere from a south direction to a west direction from the center of low-pressure areas and never from the center of high-pressure systems.
Which type of front takes over the warm front?
Cold occlusions are the most common where the cold front over takes the warm front and also undercuts the cooler air mass ahead of the warm front.
Why do thunderstorms occur along dry lines?
Since drier air is more dense than moist air, as the dryline moves east it forces moist air up into the atmosphere. Therefore, severe and sometimes tornadic thunderstorms can develop along a dry line or in the moist air just to the east of it.
What is the blue line on a cold front?
Cold Front. 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. So being "ahead of the cold front" is being in the "warm" air mass ...
What is an example of a warm frontal passage followed by a cold frontal passage?
Here is an example of a location that experiences typical warm frontal passage followed by a cold frontal passage: Clouds lower and thicken as the warm front approaches with several hours of light to moderate rain. Temperatures are in the 50s with winds from the east.
What is an occluded front?
Occluded fronts point to a decrease in intensity of the parent weather system and are indicated by a purple line with alternating triangles and half-moons on the side of its motion . While there is no difference in how they are depicted on a weather map, there are two types of occlusions; cold and warm.
Which is faster, a cold front or a cold front?
Occluded Front. The cold air mass is moving faster than the cool air mass. As the two fronts converge the cold air undercuts the cooler air mass. Cold fronts typically move faster than warm fronts, so in time they can "catch up" to warm fronts. As they do the warm air mass is forced up forming an occlusion.
What are cold fronts?
Cold fronts are curved blue lines with blue triangles. Stationary fronts have alternating sections of red curves with semicircles and blue curves with triangles. Occluded fronts are curved purple lines with both semicircles and triangles. Weather fronts are found only on surface weather maps. 05.
Where are weather fronts found?
Weather fronts are found only on surface weather maps.
What does it mean when isobars are spaced together?
The more closely the isobars are spaced together, the stronger the pressure change (pressure gradient) is over a distance. On the other hand, widely-spaced isobars indicate a more gradual change in pressure. Isobars are found only on surface weather maps—although not every surface map has them.
What does Tiffany mean in weather?
Tiffany Means. Updated October 14, 2019. A weather map and its symbols are meant to convey a lot of weather information quickly and without using a lot of words. Just as equations are the language of mathematics, weather symbols are the language of weather, so that anyone looking at a map should be able to decipher the same exact information ...
Why are isobars important?
On some weather maps, you may notice lines surrounding and encircling the "highs" and "lows." These lines are called isobars because they connect areas where the air pressure is the same ("iso-" meaning equal and "-bar" meaning pressure). The more closely the isobars are spaced together, the stronger the pressure change (pressure gradient) is over a distance. On the other hand, widely-spaced isobars indicate a more gradual change in pressure.
What does the percentage of the circle in NOAA mean?
In general, the percentage that the circle is filled represents the amount of sky that's covered with clouds.
What is radar composite?
Some surface maps include a radar image overlay (called a radar composite) that depicts where precipitation is falling based on returns from a weather radar. The intensity of rain, snow, sleet, or hail is estimated based on color, where light blue represents light rain (or snow), and red/magenta indicates flooding rains and severe storms.
What is a cold front?
Cold Front. A blue line with points indicating the direction of movement. Generally cold fronts move west to east across the USA. Cold fronts represent the boundary between cold and warm air masses, with the colder air behind the front.
What does a warm front mean?
A red line with bumps indicating the direction of movement. Warm fronts represent a boundary between warm and cold air masses, with the warmer air behind the front.
What is it called when a cold air mass overtakes a warm air mass?
If a cold air mass overtakes a warm one, it's called a "cold occlusion". If a warmer air mass overtakes a colder one, it's called a "warm occlusion". This is a typical surface station model report from a National Weather Service station.
What does a red and blue line mean?
Stationary Front. A red and blue line with alternating points and bumps indicates a frontal boundary that is not moving, or moving very slowly. The winds on either side of a stationary front blow in opposite directions, but in a parallel fashion. The differing air masses have very little interaction.
What are the features of a weather map?
On any given day, there's plenty of activity on a weather map. Frontal boundaries and the "Highs" and "Lows" are the prominent features on an average weather map you might see on the TV news. Let's take a closer look at what they mean. Cold Front. A blue line with points indicating the direction of movement.
Where is the stationary front?
A Stationary Front extends across the Mid-Atlantic States and into the Midwest. There's a Low Pressure center over Minnesota and another moving onto the California coast. Cold Fronts are moving across Texas, Kansas and Missouri. Look closely and you'll see a small Occluded Front near the Minnesota Low.
Which way does air flow in low pressure?
You will often see several fronts trailing low pressure centers. Air flows clockwise around and outward from centers of high pressure, and counterclockwise and inward the centers of low pressure. Here is a typical weather map with satellite and radar overlays.
What is a cold front?
Cold Front - a zone separating two air masses, of which the cooler, denser mass is advancing and replacing the warmer. Warm Front - a transition zone between a mass of warm air and the cold air it is replacing. Stationary Front - a front between warm ...
What is a stationary front?
Stationary Front - a front between warm and cold air masses that is moving very slowly or not at all. Occluded Front - a composite of two fronts, formed as a cold front overtakes a warm or quasi-stationary front. Two types of occlusions can form depending on the relative coldness of the air behind the cold front to the air ahead ...
What is cold occlusion?
A cold occlusion results when the coldest air is behind the cold front and a warm occlusion results when the coldest air is ahead of the warm front. Trough - an elongated area of relatively low atmospheric pressure; the opposite of a ridge. On WPC's surface analyses, this feature is also used to depict outflow boundaries.
Cold Front
Warm Front
- A warm front is the leading edge of a relatively warmer air mass replacing a colder air mass. A warm front is depicted by a red line with half-moons located on the side of the direction of its motion. Like cold front, warm fronts also extend from the center of low-pressure areas but on nearly always on the east side of the low. Here is an example of a location that experiences typi…
Stationary Front
- If the front is essentially not moving (i.e. the two air masses on either side are not moving perpendicular to the front) it is called a stationary front. A stationary front is depicted by an alternating red and blue line with a triangle on the blue portion and half-moon on the opposite side of the red portion of the line. A cold front (or warm front) that stops moving becomes a stationar…
Occluded Front
- Cold fronts typically move faster than warm fronts, so in time they can "catch up" to warm fronts. As they do the warm air mass is forced up forming an occlusion. The surface location of the occluded front is directly below the convergence point of the warm, cool and cold air masses. Occluded fronts point to a decrease in intensity of the parent weather system and are indicated …
Other Boundaries
- Dry Line
A dry line marks the boundary between a moist air mass and dry air mass. It typically lies north-south across the central and southern high Plains states during the spring and early summer, where it separates moist air from the Gulf of Mexico (to the east) and dry desert air from the sou… - Squall Line
This is a line of thunderstorms that generally form along a front but the storms move ahead of the front. As the rain cooled air under the thunderstorms begins to surge forward new thunderstorms form on the leading edge of the outflow. The outflow acts like a cold front with an increase of fo…
Other Symbols
- Trough
A trough is not a boundary but an elongated area of lower air pressure. There are changes in wind direction across a trough but there is no change in air mass. While not specifically a surface boundary, troughs reflect the change in atmospheric conditions in the upper atmosphere. As suc…
Precipitation
- Historically, areas of precipitation have been shaded green regardless if it the precipitation is frozen or not. The type of precipitation on weather maps itself also comes in numerous forms. Sometimes the precipitation type is spelled out or, as more often the case, use a wide variety of graphics to indicate type. Below are some of the more traditional meteorological symbols used …