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]](https://cimss.ssec.wisc.edu/satellite-blog/wp-content/uploads/sites/5/2019/05/190530_goes17_visible_Pacific_Ocean_actiniae_anim.gif)
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.
![TIROS-V image of actinoform clouds over the western Pacific Ocean on 07 October 1962 [click to enlarge]](https://cimss.ssec.wisc.edu/satellite-blog/wp-content/uploads/sites/5/2019/05/1963_tirosV_actinoform.jpg)
TIROS-V image of actinoform clouds over the western Pacific Ocean on 07 October 1962 [click to enlarge]