High Pressure over the Great Lakes on 25 April meant a spectacular true-color view of the 5 Great Lakes (apologies to Lake Champlain) by the VIIRS instruments on NOAA-20. A similar view was recorded at 1755 UTC by Suomi-NPP, shown below.Clear skies also meant a determination of Lake Surface Temperatures, shown below (compare these to Monday,... Read More
The animation above shows true-color imagery from the CSPP Geosphere site (direct link to animation). Of particular interest is the cloud band that forms along the western shore of Lake Michigan, especially near Chicago, and north of Milwaukee. The toggle below of the True Color imagery and Cloud Top Height suggests the cloud tops are... Read More
Imagery from the CSPP Geosphere site, above (link to animation), shows a curiously static low cloud (click here to see mp4 of cloud heights) separating from clouds along the southern shore of Lake Michigan and subsequently moving north. For several hours the cloud persists, until it moves under cirrus streaming in from the west, at which point it dissipates rapidly. The... Read More
The SAR wind analysis above shows curious banded wind features over central Lake Huron. The bands have a vertical separation of around 10 km and exist just south of essentially calm winds (magenta in the enhancement used). Peak winds within the bands 8-10 m/s, and the (weaker) winds in between... Read More
