| A cold front is the boundary between cool and warm air when the cool air is replacing the warm air. |
| Many weather textbooks state that occluded fronts occur when the cold front catches up with and overtakes the warm front. |
| Unfortunately, a cold front had moved in and the car windshield was covered with frost. |
| By the 27th, a strong cold front would be bringing strong winds and very cool temperatures. |
| The weather map symbol for a cold front is a blue line with triangles pointing in the direction the cold air is moving. |
| It's a squall line associated with the cold front that's working its way across the country right now. |
