How do the cloud and precipitation patterns match those of the norwegian cyclone model?

According to Norwegian polar front theory, the mid latitude cyclones are occurring in northern hemisphere along a stationary front, when two different temperature of air masses flowing in the opposite direction in the same front.

The Norwegian school of Meteorology of Bergen discovered the pattern of polar cyclones also known as low pressure, as they had access to weather reports from remote polar regions like the Spitsbergen Islands and Jan Mayen Island.