1-minute Mesoscale Domain Sector GOES-16 (GOES-East) “Red” Visible (0.64 µm) and “Clean” Infrared Window (10.3 µm) images (above) showed Lee as it intensified to become a Category 1 Hurricane in the Central Atlantic Ocean on 06 September 2023. The coldest cloud-top infrared brightness temperatures were around -90C (brighter white pixels embedded within darker black areas). Lee had... Read More

Northeastern Minnesota, northwestern Wisconsin and the adjacent waters of Lake Superior experienced severe weather late on 5 September 2023. The animation below shows the strong convection moving over western Lake Superior. GOES-16 Mesoscale Sector 1 imagery from 2300-2359 UTC shows numerous convective towers bubbling up and collapsing. Storm Reports from SPC include a... Read More

Sentinel-1A overflew the Samoan Islands on 4 September — as it does every 12 days — and the Normalized Radar Cross Section data (as at this website) was used to create wind data at very high spatial resolution. Sentinel-1A derived wind data can also be viewed at this NOAA/STAR website that has links... Read More

Overlapping 1-minute Mesoscale Domain Sectors provided 30-second GOES-16 (GOES-East) “Red” Visible (0.64 µm) and “Clean” Infrared Window (10.3 µm) images (with/without an overlay of GLM Flash Extent Density) (above) — which included 15-minute plots of METAR surface reports and hourly plots of Fixed Buoy reports as Category 3 Hurricane Idalia made landfall along the Big Bend coat... Read More