Final answer:
After a cold front passes, the wind direction generally shifts from the south or southwest to the west or northwest, bringing cooler, drier air and potentially breezy conditions.
Step-by-step explanation:
When a cold front has passed, the wind pattern that indicates its passage is usually a shift in wind direction. Before the front arrives, winds generally come from the south or southwest, but after the front moves through, winds typically come from the west or northwest.
This change in wind direction often brings cooler, drier air and is sometimes accompanied by clear skies. Additionally, the wind may also pick up speed, resulting in breezy conditions.