In late January and early February 2026, an Arctic blast swept through eastern North America, bringing unusually cold and wintry conditions as far south as Georgia. This extreme weather event caused a remarkable transformation of the West Florida Shelf, where the waters turned a brilliant blue. NASA's Terra satellite captured this phenomenon on February 3, 2026, revealing that the vibrant color was due to suspended calcium carbonate mud stirred up from the seafloor by the cold air. This event underscores the significant impact that Arctic air masses can have on subtropical marine environments, demonstrating the interconnectedness of Earth's systems.