What does a Purple weather front mean?

Asked by: Gina Ryan

Occluded frontsOccluded 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.

What is an example of a stationary front?

polar front is called a stationary front. In the occluded stage of the life cycle of an extratropical cyclone, when cold air west of the surface low-pressure centre advances more rapidly toward the east than cold air ahead of the warm front, warmer, less-dense air is forced aloft.

What kind of weather is stationary front?

Stationary Front

In a front of this kind, neither the cold air mass nor the warm air mass is moving. Winds tend to blow along it in opposing directions on each side. Conditions along the front are clear and dry, however, if moisture is available near the front, clouds and light precipitation may develop.

How do you identify 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 stationary front.

Is a stationary front warm or cold?

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.

What causes coldfront?

Cold fronts form when a cooler air mass moves into an area of warmer air in the wake of a developing extratropical cyclone. The warmer air interacts with the cooler air mass along the boundary, and usually produces precipitation. Cold fronts often follow a warm front or squall line.