5-minute CONUS Sector GOES-18 (GOES-West) Infrared images (above) revealed the exposed low-level circulation center (LLCC) of Tropical Storm Kiko as the system continued to weaken north of the Hawaiian island of Oahu, and downgraded to a Post-Tropical Cyclone at 1500 UTC on 10 September 2025. Clusters of deep convection developed north... Read More

The Great Lakes have a significant amount of thermal mass, meaning it takes a long time for them to cool down as the seasons change from summer to autumn. Often during this time of year, the air overlying the lakes is warmer than the lakes themselves. As water evaporates from... Read More