1-minute Mesoscale Domain Sector GOES-18 (GOES-West) “Clean” Infrared Window (10.3 µm) images (above) showed Hurricane Otis as it approached the coast of Mexico, making landfall near Acapulco (Acapulco International Airport, METAR identifier MMAA, is located about 16 miles southeast of the city center) around 0625 UTC on 25 October 2023. During the 11-hour time period shown,... Read More

5-minute GOES-16 (GOES-East) Day Cloud Phase Distinction RGB images with overlays of GLM Flash Extent Density, LightningCast Probability and Buoy/METAR reports (above) showed glaciating (brighter shades of green) and glaciated (pale shades of yellow) cloud bands streaming eastward and southeastward off Lake Ontario and Lake Erie on 08 October 2023. Some of these cloud bands were producing lake effect... Read More

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

NOAA-20 viewed the (mostly clear) Great Lakes twice early in the morning on 2 October 2023, as shown above. Day Night Band imagery shows convection moving from eastern Lake Superior (lightning strokes are apparent as bright smears in the images) into Ontario. (Day Night Band imagery shows great detail owing... Read More