5-minute CONUS Sector GOES-16 (GOES-East) “Clean” Infrared Window (10.3 µm) images that included an overlay of GLM Flash Extent Density (above) revealed 2 brief flashes of lightning activity in southern Wisconsin during the afternoon hours on 02 April 2024. Heavy thundersnow (+TSSN) was reported at Madison (station identifier KMSN) at 2047 UTC and 2053 UTC, with the thunderstorm... Read More

GOES-16 (GOES-East) “Red” Visible (0.64 µm) images (above) showed 2 swaths of fresh snow cover across central/eastern Iowa, far northern Illinois and far southern Wisconsin on 23 March 2024 — which were produced  by consecutive systems on 21 March and 22 March (below). Total snowfall accumulations contributing to the 22 March southern snow... Read More

10-minute Full Disk scan GOES-16 (GOES-East) “Clean” Infrared Window (10.3 µm) images displayed using RealEarth (above) showed the development of a thunderstorm that produced giant hail in Campana, Argentina during the evening hours (local time) on 12 March 2024.  An overlay of GLM Group Points depicted a good deal of lightning... Read More

A line of dense convective clouds in the Pacific Ocean, south of Central America, produces lightning. The lightning is being picked up by the GOES Geostationary Lightning Mapper (GLM). The storm system sits about 500 km north of the Galapagos Islands and extends eastward to the coast of Colombia.GLM, which... Read More