1-minute Mesoscale Domain Sector GOES-19 (GOES-East) Visible and Infrared images (above) showed Category 5 Hurricane Melissa as it made landfall along the far southwest coast of Jamaica around 1700 UTC on 28 October 2025. Low-altitude mesovortices were evident within the eye — and GLM Flash Points revealed abundant lightning activity within the inner... Read More
1-minute Mesoscale Domain Sector GOES-19 (GOES-East) Infrared images (above) showed Tropical Storm Melissa in the Caribbean Sea as it began to rapidly intensify during the afternoon and evening hours on 25 October 2025 — reaching Category 1 intensity at 1800 UTC on 25 October and Category 3 intensity at 0300 UTC... Read More
5-minute PACUS Sector GOES-18 (GOES-West) Mid-level Water Vapor and Upper-level Water Vapor images (above) displayed orographic waves downwind (southwest) of the Hawaiian Islands on 23 October 2025. With a ridge of high pressure north of Hawai’i (surface analyses), boundary layer flow from the northeast interacted with the topography of the island chain... Read More
Tropical Storm Melissa developed in the Caribbean Sea on 21 October 2025 — and 1-minute Mesoscale Domain Sector GOES-19 (GOES-East) Infrared and Visible images (above) showed that most of the deep convection (which often exhibited abundant GLM-detected lightning activity) remained west of Melissa’s surface center of circulation, due to moderate west-southwesterly deep-layer wind... Read More
