Actinoform clouds (or actinae) in the central Pacific Ocean
GOES-17 “Red” Visible (0.64 µm) images, with 3-hourly plots of ship wind reports [click to play animation | MP4]
This type of cloud feature was originally identified in TIROS-V imagery over the Pacific Ocean in 1962 (below), and was featured in the first Monthly Weather Review “Picture of the Month” series in January 1963.