Archive

Marine heatwave Bulletin Forecasts for November 29, 2025 by Mercator International

Key takeaways Tropical Atlantic The extent and the intensity of the marine heatwave impacting the basin are stable in moderate to strong categories, except for marine heatwave along the African coast around 15°N which is diminishing in both intensity and area, and is now in moderate category. Weekly temperature anomalies Tropical Atlantic 0°C to 2°C South… Read More

Marine heatwave categories forecast for 29 November, 2025. Mercator Ocean International

Marine heatwave Bulletin Forecasts for November 22, 2025 by Mercator International

Key takeaways Tropical Atlantic The extent of the marine heatwave in the Gulf of Mexico and the Caribbean Sea is decreasing, but its intensity remains moderate overall. The extent of the marine heatwave in the center of the basin is decreasing, but its intensity remains stable overall. The marine heatwave along the African coast around… 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: Nov 11-17, 2025

Marine Heatwave Bulletin Forecasts for November 15, 2025 by Mercator International

Key takeaways Tropical Atlantic The extent and intensity of the marine heatwave in the Gulf of Mexico and the Caribbean Sea are decreasing. Only a few scattered areas remain under the moderate category. The marine heatwave around 30°W is decreasing in extent, falling into the moderate category, and locally into the strong category. The marine… 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: Nov 4-10, 2025

Marine Heatwave Bulletin Forecasts for November 8, 2025 by Mercator International

Key takeaways Tropical Atlantic The extent and intensity of the marine heatwave in the Gulf of Mexico and in the Caribbean Sea decreasing with moderate category. The marine heatwave around 30°W is decreasing in area and intensity, shifting overall to a moderate category. The marine heatwave off the African coast around 8°N is increasing with… Read More

Marine heatwave categories forecast for 8 November, 2025. Global Ocean. Credit: Mercator Ocean International

Experimental Weekly Sargassum Inundation Risk (SIR v1.3) By the National Oceanic and Atmospheric Administration (NOAA), and the University of South Florida (USF) Status: Oct 28-Nov 3, 2025