Seasonably cool Fall-like temperatures overspread the western Great Lakes and northern Plains on 5 October. The animation above shows the Day Cloud Phase Distinction overlain with LightningCast probability from 1321-1721 UTC on 5 October (that is, 8:21-12:21 CDT). SPC on this day was anticipating general thunder over northern Minnesota. Given that,... Read More
A George Strait concert at an outdoor stadium (Nissan Stadium) in Nashville, Tennessee was cancelled by a forced evacuation — due to approaching thunderstorms — just before 10 PM local time on 29 July 2023 (0300 UTC on 30 July). GOES-16 (GOES-East) “Clean” Infrared Window (10.3 µm) images (above) showed (1) the dissipation... Read More
Large hail caused multiple injuries at the Red Rocks Amphitheater to the west of Denver on 21 June 2023 (News story 1, 2, 3; see also this tweet from the NWS in Boulder at 0326 UTC). This occurred in a region that the Storm Prediction Center flagged as in an atmosphere with an Enhanced Risk of severe weather. The... Read More
1-minute Mesoscale Domain Sector GOES-18 (GOES-West) “Clean” Infrared Window (10.3 µm) images (above) are shown with and without an overlay of GLM Flash Extent Density and contours of Lightning Cast Probability from 1530-1915 UTC on 01 June 2023 — the time period covering outdoor graduation ceremonies at the Air Force Academy in eastern Colorado. LightningCast provided good lead time, with Probability values over the Air Force Academy... Read More
