Weather Blog On This Day in 2017: Dunes and Lagoons Strong winds blowing in from the Western Atlantic sculpt the sand along the coast of southern Brazil into distinctive crescent shapes. Read More… About Author See author's posts Post navigation Previous When and where Tropical Storm Don could form…Next Two Areas that could Develop… Related Stories Blooming Seas Around the Chatham Islands Weather Blog Blooming Seas Around the Chatham Islands January 16, 2026 Clouds Swimming over Lago Argentino Weather Blog Clouds Swimming over Lago Argentino January 15, 2026 Fires on the Rise in the Far North Weather Blog Fires on the Rise in the Far North January 14, 2026