A tropical depression is a weather system that forms over warm ocean waters and has organized thunderstorms. It is characterized by a low-pressure area with sustained winds of less than 39 miles per hour (63 kilometers per hour). Tropical depressions can develop into more intense storms, such as tropical storms or hurricanes, if conditions are favorable. These systems are monitored by meteorological organizations, such as the National Hurricane Center, to provide warnings and forecasts. Tropical depressions can bring heavy rainfall, strong winds, and flooding to coastal areas, making them important to track for public safety and preparedness.