1-minute Mesoscale Domain Sector GOES-18 (GOES-West) “Red” Visible (0.64 µm) and “Clean” Infrared Window (10.3 µm) images (above) included an overlay of GLM Flash Extent Density — which showed thunderstorms that produced flash flooding, hail and an EF-1 tornado (SPC Storm Reports) in the Central Valley of California on 11 March 2023. At 2236 UTC (1 minute prior to... Read More
The CSPP Geo project released (linux-based) Gridded GLM software version 1.0 (available for download here) in December of 2022 (This previous CIMSS Blog post discussed a beta version of that software). CSPPGeo Gridded GLM software (Documentation is available here) takes Lightning Cluster Filter Algorithm (LCFA) files and converts the Flash/Event/Group data therein to gridded fields that... Read More
1-minute Mesoscale Domain Sector GOES-18 (GOES-West) “Red” Visible (0.64 µm) and “Clean” Infrared Window (10.3 µm) images (above), with and without an overlay of GLM Flash Extent Density, showed convection moving onshore in Southern California during the late morning hours on 24 February 2023 — which prompted NWS Los Angeles to issue a Tornado Warning at 1807... Read More
1-minute Mesoscale Domain Sector GOES-18 (GOES-West) “Clean” Infrared images (above) showed convection — which was focused along a quasi-stationary surface trough axis — that was producing periods of moderate to heavy rainfall across parts of Hawai’i on 28 January 2023. Numerous Flash Flood Warnings were issued by NWS Honolulu during this time,... Read More
