What does a circle around a weather station mean?
A small circle is plotted on the map at the location where the weather measurements were made. The circle can be filled in to indicate the amount of cloud cover. Positions are reserved above and below the center circle for special symbols that represent different types of high, middle, and low altitude clouds.
What does a key on a weather map tell you?
show temperature and precipitation may also show other types of weather data. will show a list of symbols called a key. The key tells you what the different symbols mean.
What is a purple front?
After the front passes, the sky is usually clearer, and the air is drier. On a weather map, shown to the left, an occluded front looks like a purple line with alternating triangles and semicircles pointing in the direction that the front is moving.
How do you read a front map?
On a weather map, a warm front is usually drawn using a solid red line with half circles pointing in the direction of the cold air that will be replaced. Warm fronts usually move from southwest to northeast. A warm front can initially bring some rain, followed by clear skies and warm temperatures.
How do you read Weather percentages?
“(M)ost of the time, the forecaster is expressing a combination of degree of confidence and areal coverage. If the forecaster is only 50% sure that precipitation will occur, and expects that, if it does occur, it will produce measurable rain over about 80 percent of the area, the PoP (chance of rain) is 40%.
What do the colors mean on radar map?
Typically, the heavier the rain, the warmer the color. So, green usually means light rain, yellow means moderate rain, and red means heavy rain or hail. The green colors indicate winds moving towards the radar, and the red colors indicate winds moving away from the radar.
How do you use the map key on a radar map?
Access a radar map by logging on to a weather Web site or watching a weather broadcast, and locate your city on the map. Read the key, usually at the top of the map, to determine what the radar colors mean. Usually, yellows and reds are more intense precipitation, while greens are less intense.