Marine heatwave Bulletin Forecasts for January 17, 2026
North Atlantic The marine heatwaves present in the Gulf of Mexico and the Caribbean Sea, decrease in extent and remain stable in terms of intensity, with moderate and strong categories still in place. The marine heatwave extending from the Antilles as far as the center of the basin is stable in intensity and area with moderate and strong categories. South Atlantic The extent and intensity of the marine heatwave between 30°S and 15°S… Read More
Marine heatwave Bulletin Forecasts for January 10, 2026
Key takeaways North Atlantic The marine heatwave present in the Gulf of Mexico, the Caribbean Sea, and as far as the center of the basin remain stable in terms of surface area and intensity, with moderate and strong categories still in place. South Atlantic The marine heatwave around 30°S is increasing in size and intensity, reaching… Read More
Experimental Weekly Sargassum Inundation Risk (SIR v1.3) By the National Oceanic and Atmospheric Administration (NOAA), and the University of South Florida (USF) Status:Dec 30- Jan 5, 2026
Outlook of Sargassum Blooms – January 5, 2026
A perspective for the Caribbean Sea and Gulf of America* by the University of South Florida Optical Oceanography Lab – (bbarnes4@usf.edu, yuyuan@usf.edu, huc@usf.edu) The map above shows the average Sargassum abundance for the month of December 2025, with warm colors representing higher abundance. The top color (red) indicates that 0.4% of the ocean surface is… Read More
Marine heatwave Bulletin Forecasts for December 20, 2025
Key takeaways Marine heatwave categories Tropical Atlantic The marine heatwave, from the Gulf of Mexico to the center of the basin, remain stable, with moderate and strong categories still in effect. South Atlantic The marine heatwave around 30°S is decreasing in intensity and extent, with only a few scattered areas remaining in the moderate category…. Read More
Experimental Weekly Sargassum Inundation Risk (SIR v1.3) By the National Oceanic and Atmospheric Administration (NOAA), and the University of South Florida (USF) Status:Dec 2-8, 2025
Marine heatwave Bulletin Forecasts for December 13, 2025
Key takeaways Marine heatwave categories Tropical Atlantic The marine heatwave at 60°S in the Southern Ocean decreases in intensity, with moderate and strong and locally severe categories. South Atlantic The marine heatwave around 30°S decreases in extent and intensity with the moderate category. Tropical Pacific The marine heatwave at the Philippines East decreases in extent… Read More
Outlook of 2025 Sargassum Blooms – December 1, 2025
A perspective for the Caribbean Sea and Gulf of America* by the University of South Florida Optical Oceanography Lab – (bbarnes4@usf.edu, yuyuan@usf.edu, huc@usf.edu) The map above shows the average Sargassum abundance for the month of November 2025, with warm colors representing higher abundance. The top color (red) indicates that 0.4% of the ocean surface is… Read More
