The moving shadow of Denali
Clear skies over much of Alaska on 12 March meant that GOES-17 had a clear view of Denali. The animation above, of GOES-17 CIMSS True Color imagery, shows the shadow of Denali (near the center of the imagery, due north of Cook Inlet) moving during the day.
A higher-resolution animation, below, using only the 0.64 µm visible imagery, from 1610 UTC on 12 March to 0240 UTC on 13 March 2021, also shows the changing of the shadow during the day.