Glossary

The solid blue line with triangles represents a cold front moving into BC from the Pacific Ocean.

A vertical slice through a cold front showing how warm, moist air is lifted upwards by the advancing wedge of cold air.

A bird’s eye view of a low pressure system and its associated fronts. Coloured arrows indicate wind direction and air temperature.

The interface where a cold air mass advances towards a warm air mass is called a cold front. Cold fronts generate atmospheric lift as their associated cold, dense air mass wedges under and lifts the warmer, less dense air it advances upon. Cold fronts are represented on weather maps by a solid blue line with blue triangles pointing in the direction the front is moving.

Cold Front