 The low turned to the north and north-northeast ahead of an approaching trough, and on August 28 the low dissipated.The government of the Cape Verde islands issued a tropical storm warning coinciding with the issuance of the first advisory on Tropical Depression Four, meaning tropical storm conditions were expected in the area within 24 hours.The National Hurricane Center stated that heavy rainfall, potentially as high as 10 in (250 mm) in mountainous areas, would be possible in the territory, possibly causing life-threatening flash floods and mudslides.