Final answer:
The wind pattern and cloud that indicate a cold front is close are a shift in wind direction, the presence of cumulus clouds, and the potential development of thunderstorms.
Step-by-step explanation:
The wind pattern and cloud that indicate a cold front is close are:
- The wind shifts from a southwesterly direction to a northwesterly direction. This change in wind direction is due to the movement of the cold air mass replacing the warm air mass.
- The appearance of cumulus clouds, which are dense and puffy clouds that indicate unstable air masses.
- The potential development of thunderstorms, as the clash between warm and cold air can lead to the formation of severe weather.