GOES-16 (GOES-East) Low-level (7.3 µm) and Mid-level (6.9 µm) Water Vapor images (above) showed that portions of the coastline of Lake Superior, Lake Michigan and Lake Huron were apparent during the day on 10 January 2022. When a very cold/dry arctic air mass is present over a particular area, the water vapor “weighting functions”... Read More

Data from this site shows SAR observations over the Great Lakes daily around 0000 and 1200 UTC. The image above shows SAR data over Lake Superior just before 1200 UTC on 10 January. The background flow used in processing shows strong northwesterly winds. Note the relative calm in the lee of... Read More