A recent outlook indicates surprisingly high levels of Sargassum in the eastern Caribbean Sea and west Atlantic – 200% higher than their historical records in April. The total Sargassum amount across the Caribbean Sea and Gulf region sets a new record that exceeds the all-time high previously set in June 2022.
A NOAA-funded effort supported the development of higher-resolution Sargassum maps for the lower Florida Keys and upper Florida Keys. These new maps will be combined with circulation models to have a short-term forecast of Sargassum transport, and such a capacity will be expanded to other regions in the near future.
https://optics.marine.usf.edu/projects/SaWS/pdf/Sargassum_outlook_2025_bulletin04_USF.pdf