# What type of front is represented with a purple line and alternating semicircles and triangles?

## What type of front is represented with a purple line and alternating semicircles and triangles?

occluded front
An occluded front is represented on a weather map by a purple line with alternating triangles and semicircles.

### What does a line with triangles indicate?

The dashes on the lines show they are equal in length. The angles at the base of the equal sides are equal. An equilateral triangle has 3 sides of equal length. The dashes on the lines show they are equal in length. All of the angles are also equal.

#### What type of front is symbolized by alternating red semicircles and blue triangles?

An occluded front is a combination of those two signs. They are indicated on a weather map either by a purple line with alternating semicircles and triangles pointing in direction of travel, or by red semicircles and blue triangles pointing in the same direction.

Why are the triangles and semicircles facing opposite directions in a stationary 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. The triangles point away from the colder air while the semi-circles point away from the warmest air.

Which type of front is depicted with semicircles only pointing in the direction of travel?

On weather maps, the surface location of a warm front is marked with a red line of semicircles pointing in the direction of travel.

## What does purple mean on a weather map?

Extremely heavy rain
Purple= Extremely heavy rain or hail. Winter Weather Colors. White or Blue= Snow. Pink= Freezing Rain or Sleet or Both. Sometimes snow can show up as yellow or orange as the radar may think it is small hail.

### What color is a stationary front?

When you look at the weather map, a stationary front is represented as red semi-circles and blue triangles like on the map below. The blue triangles will point in one direction representative of the cold air and the warm front represented by the red semi-circles represents the warmer air.

#### What does the purple line mean on a weather map?

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.