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Triangles on one side, semicircles on the other, pointing opposite ways.
Also known as: Line with triangles and bumps on opposite sides
A boundary that is not moving. It is drawn as the warm and cold front symbols alternating along the same line and facing away from each other, which depicts the situation exactly: neither air mass is displacing the other.
A front along which neither air mass is advancing, drawn as alternating triangles and semicircles on opposite sides of the line and pointing in opposite directions.
Contexts: Maps
Frequently associated with prolonged cloud and rain in one place, because a boundary that does not move keeps producing the same weather over the same ground for as long as it lasts.
The symbol is composed rather than invented: it is the cold and warm front notations combined, and reading it that way makes the meaning obvious without memorising it.
A line carrying solid triangles on one side and solid semicircles on the other, the two alternating along its length and pointing away from each other.
The stationary front combines the cold and warm front notations.