What action should be taken if lightning is detected 10 miles away?

When lightning is detected 10 miles away, the appropriate course of action is to warn all participants and spectators. This is important because lightning can strike from a significant distance, and being informed allows individuals to take necessary precautions.

By warning everyone, you provide an opportunity for safety measures to be enacted, such as finding shelter or moving to a safer location. Additionally, staying vigilant and informed can help manage the situation effectively, reducing potential risks.

While evacuation or cancellation might seem like immediate responses, they may not always be necessary or practical at that stage, especially when the lightning is still 10 miles away, giving time to react appropriately. Monitoring the situation is also important, but without a warning, individuals may not be aware of the risks involved. Thus, the correct action involves alerting everyone to danger, prioritizing safety and preparedness.