Which of the following is a sign that the weather may change for the worse?

A sudden drop in temperature can be an indicator that weather conditions are about to change for the worse. This phenomenon often precedes a storm or other adverse weather events, signaling approaching cold fronts or low-pressure systems. Such changes are crucial for boaters to recognize, as they can mean that more dangerous conditions, like heavy rain, thunderstorms, or high winds, may soon follow.

In contrast, clouds moving from east to west might not have a direct correlation with worsening weather, as cloud movement can depend on various factors. Static on the FM band of the radio can be caused by a range of variables, including disturbances in atmospheric conditions but is not a reliable indicator of impending bad weather. A rise in barometric pressure typically suggests improving weather conditions, as higher pressure is associated with stable, clear weather. This makes recognizing a sudden drop in temperature particularly essential for safety while boating, as prepared operators can take measures to ensure that they remain safe and secure during unfavorable weather.