Final answer:
When approaching an active warm front at medium to low level, you are likely to encounter conditions such as steady rain and poor visibility.
Step-by-step explanation:
When approaching an active warm front at medium to low level, you are likely to encounter conditions such as steady rain and poor visibility. Warm fronts occur when warm air replaces cold air and rises over it, causing the warm air to cool and condense, leading to precipitation. In this case, the warm front is active, meaning it is actively moving and bringing with it a front of precipitation. Steady rain and poor visibility are common characteristics of a warm front.