What are the dimensions of a storm flag?

The dimensions of a storm flag are indeed five feet wide and nine and a half feet long, which makes this option the correct answer. The storm flag is used by the United States Marine Corps during inclement weather to ensure visibility and communication effectiveness at sea. Its specific size is designed to be appropriately visible in harsh weather conditions, distinguishing it from other flags such as the garrison or post flags that have different dimensions and uses.

Understanding the proper sizing of flags such as the storm flag is important for maintaining readiness and ensuring they serve their intended purpose effectively. This attention to detail reflects the discipline and standards upheld within the Marine Corps and is crucial for operational success.