1-minute Mesoscale Domain Sector GOES-19 (GOES-East) Visible images (above) showed the rapid development of thunderstorms that produced strong wind gusts across parts of northeast Illinois and northwest Indiana on 24 July 2025 — forcing ground stops of all inbound flights to Chicago’s Midway and O’Hare airports (beginning at 1945 UTC). The peak wind... Read More
A fast-moving thunderstorm complex raced across North Dakota and Minnesota in the late afternoon/evening/overnight on 20-21 June 2025, as shown above. GOES-19 band 13 (10.3 µm) imagery and derived stability (Lifted Index) show the development of notable instability with an alignment over North Dakota along the direction of convective movement.... Read More
1-minute Mesoscale Domain Sector GOES-19 (GOES-East) “Red” Visible (0.64 µm) images (above) showed supercell thunderstorms that produced tornadoes, hail as large as 4.25″ in diameter and wind gusts as high as 100 mph (SPC Storm Reports) across parts of Texas and Oklahoma on 08 June 2025. Frequent pulses of overshooting tops were apparent with these thunderstorms.In the corresponding 1-minute... Read More
A significant outbreak of tornadoes occurred across Oklahoma and Kansas during the afternoon and evening hours on 03 May 1999 — and hail as large as 4.50 inches in diameter was reported in parts of Texas and Oklahoma (Storm Reports). NWS damage surveys indicated that widespread F4 and F5 tornado damage occurred. NOAA GOES-8... Read More
