GOES-16 Upper-level water vapor infrared imagery for the 2.5 days ending at 1331 UTC on 22 January 2025, above as an mp4 (click here for a 125-megabyte animated gif) shows an active subtropical jetstream initially across the Gulf States. The jet deforms as an impulse drops south through California. Note... Read More
1-minute Mesoscale Domain Sector GOES-18 (GOES-West) Clean Infrared Window images (above) showed the thunderstorm that produced a EF-U rated tornado just east of Interstate 5 in northern Tehama County, California late in the day on 3rd January 2025 (this was the first verified tornado in the US for 2025). Cloud-top 10.3 µm infrared brightness... Read More
1-minute Mesoscale Domain Sector GOES-18 (GOES-West) Water Vapor (6.9 µm) images (above) showed a mid-tropospheric shortwave trough that was moving inland across central/northern California — along with associated surface warm and cold frontal features on 14th December 2024. Sporadic lightning activity within a few bands of convection was indicated by GLM Flash Points. Of particular... Read More
1-minute Mesoscale Domain Sector GOES-16 (GOES-East) Clean Infrared Window (10.3 µm) images (above) showed a lake effect snow (LES) band that intensified over far eastern Lake Erie, shortly before moving inland across western New York after sunset on 30th November 2024. Intermittent lightning activity was seen immediately inland as the LES band moved across... Read More
