The primary impacts of Tropical Depression Fifteen-E include strong winds and rough seas, particularly on the northern side of the system. Mariners in the affected areas should exercise caution as peak seas are reaching 12 feet (3.7 meters). Additionally, the Gulf of Tehuantepec is under a Gale Warning, with strong to near-gale force winds expected to intensify to minimal gale force by Wednesday night. These conditions could pose risks to small vessels and coastal activities in the region. Scattered thunderstorms and gusty winds are also expected near the monsoon trough and tropical wave areas.