1-minute Mesoscale Domain Sector GOES-18 (GOES-West) Infrared Window images (above) showed Category 2 Hurricane Lowell as its center moved northward and passed about 40 miles west of the Hawaiian island of Ni’ihau on 08 September 2026. While sparse, 1-minute GOES-18 GLM Flash Points did indicate that some intermittent lightning activity was... Read More
1-minute Mesoscale Domain Sector GOES-18 (GOES-West) Infrared Window and Visible images (above) showed Tropical Storm Lala as it intensified to become a Category 1 Hurricane at 1900 UTC on 15 August 2026 (GOES-18 images | NHC advisory) south of the Big Island of Hawaii. Lala exhibited a rather ragged eye that remained... Read More
1-minute Mesoscale Domain Sector GOES-19 (GOES-East) Infrared Window images (above) showed a large and persistent cluster of deep convection that remained southwest of Tropical Storm Bertha’s center during the nighttime hours leading up to sunrise on 23 July 2026.Pulses of overshooting tops exhibited very cold infrared brightness temperatures of -90 C or... Read More
Tropical Depression Two developed in the northeastern Gulf of Mexico at 1500 UTC on 19 July 2026 — and 1-minute Mesoscale Domain Sector GOES-19 (GOES-East) Visible images (above) showed the slow trend of organization during the day (there was a 49-minute gap in image coverage as Mesoscale Sectors were rearranged). GLM Flash... Read More
