GOES East watched as thunderstorms with an impressive amount of lightning erupted over the Caribbean this weekend. GOES East's Geostationary Lightning Mapper (GLM) continually looks for lightning flashes in the Western Hemisphere, both on land and nearby ocean regions and can detect all three major lightning types: in-cloud, cloud-to-cloud and cloud-to-ground lightning. Alongside radar and other weather satellite data, lightning information helps forecasters understand when a storm is forming, i